WO2011069376A1 - Method and mobile terminal for playing audio - Google Patents
Method and mobile terminal for playing audio Download PDFInfo
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- WO2011069376A1 WO2011069376A1 PCT/CN2010/076273 CN2010076273W WO2011069376A1 WO 2011069376 A1 WO2011069376 A1 WO 2011069376A1 CN 2010076273 W CN2010076273 W CN 2010076273W WO 2011069376 A1 WO2011069376 A1 WO 2011069376A1
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- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
Definitions
- the present invention relates to audio signal processing technologies, and in particular, to an audio playback method and a mobile terminal. Background technique
- the main purpose of the present invention is to provide an audio playing method and a mobile terminal, which can play audio provided by an audio source that does not support Bluetooth through a Bluetooth headset, thereby improving user experience and reducing influence on others. .
- An audio playback method includes:
- the mobile terminal After receiving the audio signal, the mobile terminal processes the received audio signal and sends the processed audio signal to the Bluetooth headset for playback.
- the mobile terminal processes the received audio electrical signal as: The mobile terminal performs amplitude adjustment on the received audio electrical signal;
- the mobile terminal performs intensity adjustment on the amplitude-adjusted audio electrical signal
- the mobile terminal converts the intensity-adjusted audio electrical signal into a digital audio signal.
- the amplitude adjustment of the received audio electrical signal is: ⁇ using a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal,
- the voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output Amplitude adjusted audio signal.
- the mobile terminal controls the value of the digital potentiometer according to the level of the received audio electrical signal level, or the value of the digital potentiometer is controlled by the user.
- a mobile terminal comprising: an audio electrical signal receiving module, an audio electrical signal processing module, and a Bluetooth transmitting module, wherein
- the audio electrical signal receiving module is configured to receive an audio electrical signal
- the audio electrical signal processing module is configured to process an audio electrical signal received by the audio electrical signal receiving module
- the Bluetooth transmitting module is configured to send the audio signal processed by the audio electrical signal processing module to the Bluetooth headset for playing.
- the audio electrical signal processing module specifically includes: an amplitude adjustment module, an intensity adjustment module, and an analog to digital conversion module, where
- the amplitude adjustment module is configured to perform amplitude adjustment on an audio electrical signal received by the audio electrical signal receiving module;
- the intensity adjustment module is configured to perform intensity adjustment on the adjusted audio electrical signal of the amplitude adjustment module
- the analog-to-digital conversion module is configured to convert the adjusted audio electrical signal of the intensity adjustment module into a digital audio signal.
- the amplitude adjustment module performs amplitude adjustment on the audio electrical signal to: ⁇ use a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal,
- the voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output Amplitude adjusted audio signal.
- the mobile terminal also includes a digital potentiometer control module for controlling the value of the digital potentiometer based on the level of the level of the audio electrical signal received by the audio electrical signal receiving module.
- the mobile terminal also includes a user interaction module for controlling the value of the digital potentiometer based on user operations.
- the audio playing method and the mobile terminal of the present invention perform corresponding processing on the audio electrical signal provided by the audio source that does not support Bluetooth, and send the processed audio signal to the Bluetooth headset for playing.
- the audio electric signal provided by the audio source not supporting Bluetooth can be transmitted to the Bluetooth earphone through the mobile terminal for playing, thereby facilitating the use, not only improving the user experience, but also reducing the influence on others.
- FIG. 1 is a schematic flow chart of an audio playing method according to the present invention.
- FIG. 2 is a schematic structural view of an audio connection line according to the present invention.
- FIG. 3 is a schematic flowchart of processing a received audio electrical signal by a mobile terminal according to the present invention
- FIG. 4 is a schematic diagram of a voltage division principle according to the present invention
- FIG. 5 is a schematic structural diagram of a mobile terminal according to the present invention. detailed description
- the basic idea of the present invention is: The audio signal provided by the audio source that is not supported by the Bluetooth is processed by the mobile terminal, and the processed audio signal is sent to the Bluetooth headset for playing.
- the implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.
- FIG. 1 is a schematic flowchart of an audio playing method according to the present invention. As shown in FIG. 1, the audio playing method of the present invention includes the following steps:
- Step 11 The mobile terminal turns on the external audio Bluetooth processing mode.
- Step 12 The mobile terminal receives an audio electrical signal from an audio source.
- the mobile terminal has a multimedia audio signal collection and a Bluetooth transmission function such as a television, and the Bluetooth audio signal can be realized through its own audio processing circuit, a Bluetooth module, and a corresponding conversion circuit and an audio input interface. send.
- the present invention needs to add a connection line and a connection interface for external audio input in the structure and accessories of the mobile terminal.
- a connection line and a connection interface for external audio input in the structure and accessories of the mobile terminal.
- the audio output ports of all the televisions are common interfaces, and generally only need to ensure the audio of the unique mobile phone. Just enter the interface.
- the structure of an audio connecting line of the present invention is as shown in Fig. 2, but the configuration of the audio connecting line of the present invention is not limited to the structure shown in Fig. 2.
- Step 13 The mobile terminal processes the received audio electrical signal and sends the processed audio signal to the Bluetooth headset.
- FIG. 3 is a schematic flowchart of processing a received audio electrical signal by the mobile terminal according to the present invention. As shown in FIG. 3, the mobile terminal of the present invention generally processes the received audio electrical signal by the following steps:
- Step 131 The mobile terminal performs amplitude adjustment on the received audio electrical signal.
- the mobile terminal adjusts the amplitude of the external input audio, that is, adjusts the level of the input audio electrical signal to meet the level requirement of the audio module of the mobile terminal. Since the signal amplitude of the external audio is different, the input level is generally guaranteed. Do not exceed the maximum allowed by the mobile terminal audio module.
- the audio module is an existing module of the mobile terminal and is mainly responsible for processing the audio signal of the mobile terminal.
- FIG. 4 is a schematic diagram of the voltage division principle of the present invention. As shown in FIG. 4, a fixed resistor and a digital potentiometer are used for voltage division in the voltage divider circuit.
- the voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs the received audio electrical signal, the other end is connected with a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output amplitude adjusted. After the audio signal.
- the mobile terminal can adaptively control the value of the digital potentiometer through the control bus according to the level of the audio signal level collected by the control terminal, and the value of the digital potentiometer can also be controlled by the user, that is, according to the audio quality that is heard during use. The audio amplitude is adjusted.
- the mobile terminal can adaptively control the value of the digital potentiometer through the control bus according to the level of the audio signal level collected by the mobile terminal, and the higher the level of the input audio electric signal, the value of the digital potentiometer needs to be adjusted.
- the partial voltage effect is more obvious to ensure that the output audio electrical signal meets the level requirement of the mobile terminal.
- Step 132 The mobile terminal performs intensity adjustment on the amplitude-adjusted audio electrical signal.
- the amplitude-adjusted audio signal also requires intensity adjustment to ensure that the adjusted audio signal meets the audio input requirements of the mobile terminal and can be accepted by the audio module of the mobile terminal without distortion.
- the adjustment of the output intensity is generally achieved by adjusting the output impedance.
- Step 133 The mobile terminal converts the intensity-adjusted audio electrical signal into a digital audio signal.
- the audio signal of the intensity adjustment is generally digitized by the audio module, and the processed audio signal is sent to the Bluetooth headset.
- Step 14 The Bluetooth headset receives the digital audio signal from the mobile terminal and plays it.
- the mobile terminal of the present invention includes: an audio electrical signal receiving module 51, an audio electrical signal processing module 52, and a Bluetooth transmitting module.
- An audio electrical signal receiving module 51 configured to receive an audio electrical signal
- the audio electrical signal processing module 52 is configured to process the audio electrical signal received by the audio electrical signal receiving module 51;
- the Bluetooth transmitting module 53 is configured to send the audio signal processed by the audio electrical signal processing module 52 to the Bluetooth headset for playing.
- the audio signal processing module 52 specifically includes: an amplitude adjustment module 521, an intensity adjustment module 522, and an analog to digital conversion module 523, where
- the amplitude adjustment module 521 is configured to perform amplitude adjustment on the audio electrical signal received by the audio electrical signal receiving module 51.
- the intensity adjustment module 522 is configured to perform intensity adjustment on the adjusted audio electrical signal of the amplitude adjustment module 521;
- the analog to digital conversion module 523 is configured to convert the adjusted audio electrical signal of the intensity adjustment module 522 into a digital audio signal.
- the function of the analog-to-digital conversion module is generally implemented by the audio module of the mobile terminal.
- the amplitude adjustment module 521 performs amplitude adjustment on the audio electrical signal to: ⁇ use a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal,
- the voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor outputs an amplitude Adjusted audio signal.
- the mobile terminal further includes a digital potentiometer control module 54 for controlling the value of the digital potentiometer based on the magnitude of the level of the audio electrical signal received by the audio electrical signal receiving module.
- the mobile terminal also includes a user interaction module 55 for controlling the value of the digital potentiometer based on user operations.
- the present invention utilizes the existing hardware and software of the mobile terminal and a certain peripheral conversion module to complete the collection of the audio electrical signals outputted by the television, the audio device and the like, and transmit the Bluetooth electrical signals to the Bluetooth earphone through the Bluetooth, and the multimedia such as the television can be
- the audio signal is output through the Bluetooth of the mobile phone, which avoids the influence of the audio of these audiovisual media on others.
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Abstract
A method for playing audio is disclosed in the present invention, and it includes the following steps that: after receiving an audio electronic signal, a mobile terminal processes the received audio electronic signal and transmits the processed audio signal to a Bluetooth earphone to play. A mobile terminal is accordingly disclosed in the present invention, and it includes an audio electronic signal receiving module, an audio electronic signal processing module and a Bluetooth transmission module. By using the present invention, the audio electronic signal provided by an audio source which does not support the Bluetooth can be transmitted by the mobile terminal to the Bluetooth earphone to play, so that it is convenience of use, and not only the user experience is improved, but also the influence to others is reduced.
Description
一种音频播放方法及移动终端 技术领域 Audio playing method and mobile terminal
本发明涉及音频信号处理技术， 尤其涉及一种音频播放方法及移动终 端。 背景技术 The present invention relates to audio signal processing technologies, and in particular, to an audio playback method and a mobile terminal. Background technique
随着社会的发展， 我们会接触到各种各样的电子音乐、 视频产品， 电 子产品大大地丰富了我们的生活， 然而， 在我们享受这些电子产品给我们 带来的视听享受的同时， 那些外放的音频也可能会成为别人的噪音， 影响 他人的生活， 虽然现有的部分电子产品， 如 MP4等能够通过蓝牙耳机进行 音频播放， 以方便视听， 并减小对他人的干扰， 但是， 对于那些不支持蓝 牙的音频源 （如电视） 而言， 仍然无法避免的会在使用过程中对他人造成 干扰。 即使电视提供耳机接口， 但由于受到耳机线长短的限制， 使用起来 很不方便。 发明内容 With the development of society, we will be exposed to a variety of electronic music and video products. Electronic products have greatly enriched our lives. However, while we enjoy the audio-visual enjoyment that these electronic products bring to us, those The external audio may also become the noise of others, affecting the lives of others, although some existing electronic products, such as MP4, can play audio through Bluetooth headsets to facilitate audiovisual and reduce interference to others, however, For audio sources that do not support Bluetooth (such as TV), it is still unavoidable that it will interfere with others during use. Even if the TV provides a headphone jack, it is inconvenient to use due to the limitation of the length of the headphone cord. Summary of the invention
有鉴于此， 本发明的主要目的在于提供一种音频播放方法及移动终端， 能够将不支持蓝牙的音频源所提供的音频通过蓝牙耳机进行播放， 从而提 高用户体验， 且减小对他人的影响。 In view of this, the main purpose of the present invention is to provide an audio playing method and a mobile terminal, which can play audio provided by an audio source that does not support Bluetooth through a Bluetooth headset, thereby improving user experience and reducing influence on others. .
为达到上述目的， 本发明的技术方案是这样实现的： In order to achieve the above object, the technical solution of the present invention is achieved as follows:
一种音频播放方法， 包括： An audio playback method includes:
移动终端接收音频电信号后， 对接收的音频电信号进行处理， 将处理 后的音频信号发送给蓝牙耳机进行播放。 After receiving the audio signal, the mobile terminal processes the received audio signal and sends the processed audio signal to the Bluetooth headset for playback.
所述移动终端对接收的音频电信号进行处理为：
移动终端对接收的音频电信号进行幅度调整； The mobile terminal processes the received audio electrical signal as: The mobile terminal performs amplitude adjustment on the received audio electrical signal;
移动终端对幅度调整后的音频电信号进行强度调整； The mobile terminal performs intensity adjustment on the amplitude-adjusted audio electrical signal;
移动终端将强度调整后的音频电信号转换为数字音频信号。 The mobile terminal converts the intensity-adjusted audio electrical signal into a digital audio signal.
所述对接收的音频电信号进行幅度调整为： 釆用分压电路对接收的音 频电信号进行幅度调整， The amplitude adjustment of the received audio electrical signal is: 釆 using a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal,
所述分压电路包括电阻、 数字电位器和电容， 所述数字电位器的一端 输入接收的音频电信号， 另一端连接电阻和电容， 所述电阻的另一端接地， 所述电容的另一端输出幅度调整后的音频电信号。 The voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output Amplitude adjusted audio signal.
移动终端根据接收的音频电信号电平的大小控制数字电位器的值， 或 者， 由用户控制数字电位器的值。 The mobile terminal controls the value of the digital potentiometer according to the level of the received audio electrical signal level, or the value of the digital potentiometer is controlled by the user.
一种移动终端， 包括： 音频电信号接收模块、 音频电信号处理模块和 蓝牙发送模块， 其中， A mobile terminal, comprising: an audio electrical signal receiving module, an audio electrical signal processing module, and a Bluetooth transmitting module, wherein
所述音频电信号接收模块， 用于接收音频电信号； The audio electrical signal receiving module is configured to receive an audio electrical signal;
所述音频电信号处理模块， 用于对音频电信号接收模块接收的音频电 信号进行处理； The audio electrical signal processing module is configured to process an audio electrical signal received by the audio electrical signal receiving module;
所述蓝牙发送模块， 用于将音频电信号处理模块处理后的音频信号发 送给蓝牙耳机进行播放。 The Bluetooth transmitting module is configured to send the audio signal processed by the audio electrical signal processing module to the Bluetooth headset for playing.
所述音频电信号处理模块具体包括： 幅度调整模块、 强度调整模块和 模数转换模块， 其中， The audio electrical signal processing module specifically includes: an amplitude adjustment module, an intensity adjustment module, and an analog to digital conversion module, where
所述幅度调整模块， 用于对音频电信号接收模块接收的音频电信号进 行幅度调整； The amplitude adjustment module is configured to perform amplitude adjustment on an audio electrical signal received by the audio electrical signal receiving module;
所述强度调整模块， 用于对幅度调整模块调整后的音频电信号进行强 度调整； The intensity adjustment module is configured to perform intensity adjustment on the adjusted audio electrical signal of the amplitude adjustment module;
所述模数转换模块， 用于将强度调整模块调整后的音频电信号转换为 数字音频信号。
所述幅度调整模块对音频电信号进行幅度调整为： 釆用分压电路对接 收的音频电信号进行幅度调整， The analog-to-digital conversion module is configured to convert the adjusted audio electrical signal of the intensity adjustment module into a digital audio signal. The amplitude adjustment module performs amplitude adjustment on the audio electrical signal to: 釆 use a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal,
所述分压电路包括电阻、 数字电位器和电容， 所述数字电位器的一端 输入接收的音频电信号， 另一端连接电阻和电容， 所述电阻的另一端接地， 所述电容的另一端输出幅度调整后的音频电信号。 The voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output Amplitude adjusted audio signal.
该移动终端还包括数字电位器控制模块， 用于根据音频电信号接收模 块所接收音频电信号电平的大小控制数字电位器的值。 The mobile terminal also includes a digital potentiometer control module for controlling the value of the digital potentiometer based on the level of the level of the audio electrical signal received by the audio electrical signal receiving module.
该移动终端还包括用户交互模块， 用于根据用户操作控制数字电位器 的值。 The mobile terminal also includes a user interaction module for controlling the value of the digital potentiometer based on user operations.
本发明音频播放方法及移动终端， 由移动终端对不支持蓝牙的音频源 所提供的音频电信号进行相应的处理， 并将处理后的音频信号发送到蓝牙 耳机进行播放。 通过本发明， 不支持蓝牙的音频源所提供的音频电信号可 以通过移动终端发送到蓝牙耳机进行播放， 从而使用方便， 不但提高了用 户体验， 且减小了对他人的影响。 附图说明 The audio playing method and the mobile terminal of the present invention perform corresponding processing on the audio electrical signal provided by the audio source that does not support Bluetooth, and send the processed audio signal to the Bluetooth headset for playing. Through the invention, the audio electric signal provided by the audio source not supporting Bluetooth can be transmitted to the Bluetooth earphone through the mobile terminal for playing, thereby facilitating the use, not only improving the user experience, but also reducing the influence on others. DRAWINGS
图 1为本发明音频播放方法流程示意图； 1 is a schematic flow chart of an audio playing method according to the present invention;
图 2为本发明一音频连接线的结构示意图； 2 is a schematic structural view of an audio connection line according to the present invention;
图 3为本发明移动终端对接收的音频电信号进行处理的流程示意图； 图 4为本发明分压原理示意图； 3 is a schematic flowchart of processing a received audio electrical signal by a mobile terminal according to the present invention; FIG. 4 is a schematic diagram of a voltage division principle according to the present invention;
图 5为本发明移动终端的结构示意图。 具体实施方式 FIG. 5 is a schematic structural diagram of a mobile terminal according to the present invention. detailed description
本发明的基本思想是： 由移动终端对不支持蓝牙的音频源所提供的音 频电信号进行相应的处理， 并将处理后的音频信号发送到蓝牙耳机进行播 放。
下面结合附图对技术方案的实施作进一步的详细描述。 The basic idea of the present invention is: The audio signal provided by the audio source that is not supported by the Bluetooth is processed by the mobile terminal, and the processed audio signal is sent to the Bluetooth headset for playing. The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.
图 1为本发明音频播放方法流程示意图， 如图 1所示， 本发明音频播 放方法包括以下步骤： 1 is a schematic flowchart of an audio playing method according to the present invention. As shown in FIG. 1, the audio playing method of the present invention includes the following steps:
步骤 11 : 移动终端开启外输音频蓝牙处理模式。 Step 11: The mobile terminal turns on the external audio Bluetooth processing mode.
步骤 12: 移动终端接收来自音频源的音频电信号。 Step 12: The mobile terminal receives an audio electrical signal from an audio source.
本发明中， 该移动终端具有电视等多媒体音频电信号釆集及蓝牙传输 功能， 其通过自身的音频处理电路、 蓝牙模块， 并增加相应的转换电路和 音频输入接口便可以实现音频电信号的蓝牙发送。 In the present invention, the mobile terminal has a multimedia audio signal collection and a Bluetooth transmission function such as a television, and the Bluetooth audio signal can be realized through its own audio processing circuit, a Bluetooth module, and a corresponding conversion circuit and an audio input interface. send.
具体的， 本发明需要在移动终端结构及附件中增加外输音频输入的连 接线及连接接口， 以电视为例， 目前所有电视的音频输出口都是通用接口， 一般只需要保证特有手机的音频输入接口即可。 本发明一音频连接线的结 构如图 2所示， 但本发明音频连接线的构造不限于图 2所示的结构。 Specifically, the present invention needs to add a connection line and a connection interface for external audio input in the structure and accessories of the mobile terminal. Taking the television as an example, the audio output ports of all the televisions are common interfaces, and generally only need to ensure the audio of the unique mobile phone. Just enter the interface. The structure of an audio connecting line of the present invention is as shown in Fig. 2, but the configuration of the audio connecting line of the present invention is not limited to the structure shown in Fig. 2.
步骤 13: 移动终端对接收的音频电信号进行处理， 将处理后的音频信 号发送给蓝牙耳机。 Step 13: The mobile terminal processes the received audio electrical signal and sends the processed audio signal to the Bluetooth headset.
图 3 为本发明移动终端对接收的音频电信号进行处理的流程示意图， 如图 3 所示， 本发明移动终端对接收的音频电信号进行处理一般包括以下 步骤： FIG. 3 is a schematic flowchart of processing a received audio electrical signal by the mobile terminal according to the present invention. As shown in FIG. 3, the mobile terminal of the present invention generally processes the received audio electrical signal by the following steps:
步骤 131 : 移动终端对接收的音频电信号进行幅度调整。 Step 131: The mobile terminal performs amplitude adjustment on the received audio electrical signal.
移动终端对外部输入音频的幅度进行调整， 即对输入的音频电信号的 电平幅度进行调整使其满足移动终端音频模块的电平要求， 由于外部音频 的信号幅度不同， 所以一般保证输入电平不超过移动终端音频模块允许的 最大值即可。 音频模块为移动终端现有的模块， 主要负责对移动终端的音 频信号进行处理。 The mobile terminal adjusts the amplitude of the external input audio, that is, adjusts the level of the input audio electrical signal to meet the level requirement of the audio module of the mobile terminal. Since the signal amplitude of the external audio is different, the input level is generally guaranteed. Do not exceed the maximum allowed by the mobile terminal audio module. The audio module is an existing module of the mobile terminal and is mainly responsible for processing the audio signal of the mobile terminal.
比较常用的幅度调整方法是使用电阻进行分压， 图 4为本发明分压原 理示意图， 如图 4所示， 分压电路中使用固定电阻和数字电位器进行分压，
分压电路包括电阻、 数字电位器和电容， 所述数字电位器的一端输入接收 的音频电信号， 另一端连接电阻和电容， 所述电阻的另一端接地， 所述电 容的另一端输出幅度调整后的音频电信号。 移动终端可以根据釆集到的音 频电信号电平的大小， 通过控制总线自适应的控制数字电位器的值， 也可 由用户控制数字电位器的值， 即在使用时根据听到的音频质量对音频幅度 进行调节。 移动终端可以根据釆集到的音频电信号电平的大小， 通过控制 总线自适应的控制数字电位器的值时， 输入音频电信号的电平越高， 需要 通过调整数字电位器的值使其分压作用更明显， 以保证输出的音频电信号 满足移动终端的电平要求。 The more commonly used amplitude adjustment method is to use a resistor for voltage division. FIG. 4 is a schematic diagram of the voltage division principle of the present invention. As shown in FIG. 4, a fixed resistor and a digital potentiometer are used for voltage division in the voltage divider circuit. The voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs the received audio electrical signal, the other end is connected with a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output amplitude adjusted. After the audio signal. The mobile terminal can adaptively control the value of the digital potentiometer through the control bus according to the level of the audio signal level collected by the control terminal, and the value of the digital potentiometer can also be controlled by the user, that is, according to the audio quality that is heard during use. The audio amplitude is adjusted. The mobile terminal can adaptively control the value of the digital potentiometer through the control bus according to the level of the audio signal level collected by the mobile terminal, and the higher the level of the input audio electric signal, the value of the digital potentiometer needs to be adjusted. The partial voltage effect is more obvious to ensure that the output audio electrical signal meets the level requirement of the mobile terminal.
步骤 132: 移动终端对幅度调整后的音频电信号进行强度调整。 Step 132: The mobile terminal performs intensity adjustment on the amplitude-adjusted audio electrical signal.
经过幅度调节的音频信号还需要进行强度调整， 以保证调整后的音频 电信号能够满足移动终端音频输入的要求， 从而能够被移动终端的音频模 块不失真的接受。 输出强度的调整一般通过调整输出阻抗实现。 The amplitude-adjusted audio signal also requires intensity adjustment to ensure that the adjusted audio signal meets the audio input requirements of the mobile terminal and can be accepted by the audio module of the mobile terminal without distortion. The adjustment of the output intensity is generally achieved by adjusting the output impedance.
步骤 133 : 移动终端将强度调整后的音频电信号转换为数字音频信号。 一般由音频模块对强度调整后的音频电信号进行数字化处理， 再将处 理后的音频信号发送给蓝牙耳机。 Step 133: The mobile terminal converts the intensity-adjusted audio electrical signal into a digital audio signal. The audio signal of the intensity adjustment is generally digitized by the audio module, and the processed audio signal is sent to the Bluetooth headset.
步骤 14: 蓝牙耳机接收来自移动终端的数字音频信号并播放。 Step 14: The Bluetooth headset receives the digital audio signal from the mobile terminal and plays it.
图 5为本发明移动终端的结构示意图， 如图 5所示， 本发明的移动终 端包括： 音频电信号接收模块 51、音频电信号处理模块 52和蓝牙发送模块 5 is a schematic structural diagram of a mobile terminal according to the present invention. As shown in FIG. 5, the mobile terminal of the present invention includes: an audio electrical signal receiving module 51, an audio electrical signal processing module 52, and a Bluetooth transmitting module.
53 , 其中， 53 , where
音频电信号接收模块 51 , 用于接收音频电信号； An audio electrical signal receiving module 51, configured to receive an audio electrical signal;
音频电信号处理模块 52 ,用于对音频电信号接收模块 51接收的音频电 信号进行处理； The audio electrical signal processing module 52 is configured to process the audio electrical signal received by the audio electrical signal receiving module 51;
蓝牙发送模块 53 ,用于将音频电信号处理模块 52处理后的音频信号发 送给蓝牙耳机进行播放。
音频电信号处理模块 52具体包括： 幅度调整模块 521、 强度调整模块 522和模数转换模块 523 , 其中， The Bluetooth transmitting module 53 is configured to send the audio signal processed by the audio electrical signal processing module 52 to the Bluetooth headset for playing. The audio signal processing module 52 specifically includes: an amplitude adjustment module 521, an intensity adjustment module 522, and an analog to digital conversion module 523, where
幅度调整模块 521 , 用于对音频电信号接收模块 51接收的音频电信号 进行幅度调整； The amplitude adjustment module 521 is configured to perform amplitude adjustment on the audio electrical signal received by the audio electrical signal receiving module 51.
强度调整模块 522 ,用于对幅度调整模块 521调整后的音频电信号进行 强度调整； The intensity adjustment module 522 is configured to perform intensity adjustment on the adjusted audio electrical signal of the amplitude adjustment module 521;
模数转换模块 523 ,用于将强度调整模块 522调整后的音频电信号转换 为数字音频信号。 实际应用中， 模数转换模块的功能一般由移动终端的音 频模块实现。 The analog to digital conversion module 523 is configured to convert the adjusted audio electrical signal of the intensity adjustment module 522 into a digital audio signal. In practical applications, the function of the analog-to-digital conversion module is generally implemented by the audio module of the mobile terminal.
幅度调整模块 521 对音频电信号进行幅度调整为： 釆用分压电路对接 收的音频电信号进行幅度调整， The amplitude adjustment module 521 performs amplitude adjustment on the audio electrical signal to: 釆 use a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal,
该分压电路包括电阻、 数字电位器和电容， 所述数字电位器的一端输 入接收的音频电信号， 另一端连接电阻和电容， 所述电阻的另一端接地， 所述电容的另一端输出幅度调整后的音频电信号。 The voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor outputs an amplitude Adjusted audio signal.
该移动终端还包括数字电位器控制模块 54, 用于根据音频电信号接收 模块所接收音频电信号电平的大小控制数字电位器的值。 The mobile terminal further includes a digital potentiometer control module 54 for controlling the value of the digital potentiometer based on the magnitude of the level of the audio electrical signal received by the audio electrical signal receiving module.
该移动终端还包括用户交互模块 55 , 用于根据用户操作控制数字电位 器的值。 The mobile terminal also includes a user interaction module 55 for controlling the value of the digital potentiometer based on user operations.
根据上述描述， 本发明利用移动终端内部现有硬件、 软件加上一定外 围转换模块完成对电视、 音响等设备输出的音频电信号进行釆集并通过蓝 牙传输到蓝牙耳机， 可以将电视等多媒体的音频信号通过手机蓝牙输出， 避免了这些视听媒体的音频对他人的影响。 According to the above description, the present invention utilizes the existing hardware and software of the mobile terminal and a certain peripheral conversion module to complete the collection of the audio electrical signals outputted by the television, the audio device and the like, and transmit the Bluetooth electrical signals to the Bluetooth earphone through the Bluetooth, and the multimedia such as the television can be The audio signal is output through the Bluetooth of the mobile phone, which avoids the influence of the audio of these audiovisual media on others.
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。
The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Claims
1、 一种音频播放方法， 其特征在于， 该方法包括： An audio playback method, characterized in that the method comprises:
移动终端接收音频电信号后， 对接收的音频电信号进行处理， 将处理 后的音频信号发送给蓝牙耳机进行播放。 After receiving the audio signal, the mobile terminal processes the received audio signal and sends the processed audio signal to the Bluetooth headset for playback.
2、 根据权利要求 1所述的方法， 其特征在于， 所述移动终端对接收的 音频电信号进行处理为： 2. The method according to claim 1, wherein the mobile terminal processes the received audio electrical signal as:
移动终端对接收的音频电信号进行幅度调整； The mobile terminal performs amplitude adjustment on the received audio electrical signal;
移动终端对幅度调整后的音频电信号进行强度调整； The mobile terminal performs intensity adjustment on the amplitude-adjusted audio electrical signal;
移动终端将强度调整后的音频电信号转换为数字音频信号。 The mobile terminal converts the intensity-adjusted audio electrical signal into a digital audio signal.
3、 根据权利要求 2所述的方法， 其特征在于， 所述对接收的音频电信 号进行幅度调整为： 釆用分压电路对接收的音频电信号进行幅度调整， 所述分压电路包括电阻、 数字电位器和电容， 所述数字电位器的一端 输入接收的音频电信号， 另一端连接电阻和电容， 所述电阻的另一端接地， 所述电容的另一端输出幅度调整后的音频电信号。 3. The method according to claim 2, wherein the amplitude adjustment of the received audio electrical signal is: 幅度 using a voltage dividing circuit to perform amplitude adjustment on the received audio electrical signal, the voltage dividing circuit including a resistor a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor outputs an amplitude-adjusted audio electrical signal .
4、 根据权利要求 3所述的方法， 其特征在于， 移动终端根据接收的音 频电信号电平的大小控制数字电位器的值， 或者， 由用户控制数字电位器 的值。 4. The method according to claim 3, wherein the mobile terminal controls the value of the digital potentiometer according to the level of the received audio electrical signal level, or the value of the digital potentiometer is controlled by the user.
5、 一种移动终端， 其特征在于， 该移动终端包括： 音频电信号接收模 块、 音频电信号处理模块和蓝牙发送模块， 其中， A mobile terminal, comprising: an audio electrical signal receiving module, an audio electrical signal processing module, and a Bluetooth transmitting module, wherein
所述音频电信号接收模块， 用于接收音频电信号； The audio electrical signal receiving module is configured to receive an audio electrical signal;
所述音频电信号处理模块， 用于对音频电信号接收模块接收的音频电 信号进行处理； The audio electrical signal processing module is configured to process an audio electrical signal received by the audio electrical signal receiving module;
所述蓝牙发送模块， 用于将音频电信号处理模块处理后的音频信号发 送给蓝牙耳机进行播放。 The Bluetooth transmitting module is configured to send the audio signal processed by the audio electrical signal processing module to the Bluetooth headset for playing.
6、 根据权利要求 5所述的移动终端， 其特征在于， 所述音频电信号处 理模块具体包括： 幅度调整模块、 强度调整模块和模数转换模块； 其中， 所述幅度调整模块， 用于对音频电信号接收模块接收的音频电信号进 行幅度调整； 6. The mobile terminal according to claim 5, wherein the audio electrical signal is The module includes: an amplitude adjustment module, an intensity adjustment module, and an analog-to-digital conversion module; wherein the amplitude adjustment module is configured to perform amplitude adjustment on the audio electrical signal received by the audio electrical signal receiving module;
所述强度调整模块， 用于对幅度调整模块调整后的音频电信号进行强 度调整； The intensity adjustment module is configured to perform intensity adjustment on the adjusted audio electrical signal of the amplitude adjustment module;
所述模数转换模块， 用于将强度调整模块调整后的音频电信号转换为 数字音频信号。 The analog-to-digital conversion module is configured to convert the adjusted audio electrical signal of the intensity adjustment module into a digital audio signal.
7、 根据权利要求 6所述的移动终端， 其特征在于， 所述幅度调整模块 对音频电信号进行幅度调整为： 釆用分压电路对接收的音频电信号进行幅 度调整， The mobile terminal according to claim 6, wherein the amplitude adjustment module performs amplitude adjustment on the audio electrical signal to: 釆 adjust the amplitude of the received audio electrical signal by using a voltage dividing circuit,
所述分压电路包括电阻、 数字电位器和电容， 所述数字电位器的一端 输入接收的音频电信号， 另一端连接电阻和电容， 所述电阻的另一端接地， 所述电容的另一端输出幅度调整后的音频电信号。 The voltage dividing circuit comprises a resistor, a digital potentiometer and a capacitor, one end of the digital potentiometer inputs a received audio electrical signal, the other end is connected to a resistor and a capacitor, the other end of the resistor is grounded, and the other end of the capacitor is output Amplitude adjusted audio signal.
8、 根据权利要求 7所述的移动终端， 其特征在于， 该移动终端还包括 数字电位器控制模块， 用于根据音频电信号接收模块所接收音频电信号电 平的大小控制数字电位器的值。 The mobile terminal according to claim 7, wherein the mobile terminal further comprises a digital potentiometer control module, configured to control the value of the digital potentiometer according to the magnitude of the level of the audio electrical signal received by the audio electrical signal receiving module. .
9、 根据权利要求 7所述的移动终端， 其特征在于， 该移动终端还包括 用户交互模块， 用于根据用户操作控制数字电位器的值。 The mobile terminal according to claim 7, wherein the mobile terminal further comprises a user interaction module, configured to control a value of the digital potentiometer according to a user operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910242644.0 | 2009-12-11 | ||
| CN200910242644A CN102097115B (en) | 2009-12-11 | 2009-12-11 | Audio frequency playing method and mobile terminal |
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| WO2011069376A1 true WO2011069376A1 (en) | 2011-06-16 |
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| PCT/CN2010/076273 WO2011069376A1 (en) | 2009-12-11 | 2010-08-23 | Method and mobile terminal for playing audio |
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| WO (1) | WO2011069376A1 (en) |
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| CN102938256B (en) * | 2011-08-15 | 2017-04-19 | 深圳市菲迪亚数码电子有限公司 | Audio player |
| CN103594100A (en) * | 2012-08-13 | 2014-02-19 | 上海博泰悦臻电子设备制造有限公司 | Method and apparatus for playing music in mobile terminal through bluetooth |
| CN105653237B (en) * | 2016-02-01 | 2019-03-22 | 宇龙计算机通信科技(深圳)有限公司 | Audio play control method, audio broadcasting control system and terminal |
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| CN102097115A (en) | 2011-06-15 |
| CN102097115B (en) | 2012-09-05 |
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