CN112530391A - From adapter device of taking digital signal processing - Google Patents
From adapter device of taking digital signal processing Download PDFInfo
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- CN112530391A CN112530391A CN201910879867.1A CN201910879867A CN112530391A CN 112530391 A CN112530391 A CN 112530391A CN 201910879867 A CN201910879867 A CN 201910879867A CN 112530391 A CN112530391 A CN 112530391A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
- G10H3/143—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means characterised by the use of a piezoelectric or magneto-strictive transducer
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0091—Means for obtaining special acoustic effects
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/46—Volume control
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- Acoustics & Sound (AREA)
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- Electrophonic Musical Instruments (AREA)
Abstract
The invention discloses a sound pick-up device with digital signal processing, which relates to the technical field of sound pick-up devices and mainly comprises an audio input interface, an audio coding and decoding chip, a digital signal processing chip, a main control chip and an audio output interface; the audio input interface is used for picking up audio; the audio coding and decoding chip is respectively connected with the audio input interface, the digital signal processing chip and the audio output interface and is used for sending the picked audio decoding result to the digital signal processing chip; the main control chip is connected with the digital signal processing chip and used for sending the IR samples to the digital signal processing chip; the digital signal processing chip is used for sending the decoding result and the convolution reverberation result of the IR sampling to the audio coding decoding chip; and the audio coding and decoding chip is used for sending the coding result of the convolution reverberation result to the audio output interface. The invention can realize pickup and sound effect processing in one device, and solves the problems of insufficient grace and non-ideal tone color picked by the traditional musical instrument pickup.
Description
Technical Field
The invention relates to the technical field of sound pick-up devices, in particular to a sound pick-up device with digital signal processing.
Background
The existing musical instrument pickups on the market can be divided into passive pickups and active pickups. Among them, the passive sound pickup device usually uses an audio pickup device such as a moving coil microphone or piezoelectric ceramics which does not require a power supply to collect sound as an electric signal and then directly outputs the electric signal. The active sound pick-up is provided with a dry battery for supplying power, and can amplify and output picked audio. Some sound pickups have a function of adjusting the proportion of high and low tones, i.e., a basic audio equalization function. Some microphones provide a preliminary echo function but do not provide deep fine tuning. However, the existing sound pickup device does not have the function of beautifying the tone or processing the sound effect, so that the picked-up tone has the problems of insufficient beauty and non-ideality. If further processing of the picked musical instrument sound is to be realized, an additional comprehensive effector or a plurality of single effectors are required, or a device with high-speed computing capability such as a notebook computer, a tablet computer, an intelligent mobile terminal and the like is used. When the sound-collecting device is used, the audio output of the sound-collecting device is connected to the audio input of the equipment, and the audio output of the equipment is connected to the sound/sound mixing console, so that a plurality of devices are involved, and the operation is complicated.
In addition, in the case of erhu, in the conventional instrument reform, the biomimetic membrane is used as the instrument vibrating membrane instead of the snakeskin to achieve the purpose of 'reducing or even eliminating the catching and killing of wild animals for making instruments'. However, the bionic membranes developed up to now still have the problems of insufficient fullness, insufficient brightness and the like in terms of tone quality, and cannot completely replace snakeskin to be used in the urheen. Although the traditional sound pick-up is used, the sound effect processing effect can be similar even if a special IR (impulse response) processor is connected to the output end, IR parameters of the IR processor, namely IR sampling, are only preset in a plurality of types, and therefore the IR parameter is inconvenient to update or replace quickly.
In view of the foregoing, there is a need in the art for a sound pickup with high integration and high customizability to achieve sound pickup and sound effect processing in one device, which solves the problems of the traditional sound pickup of musical instruments that the picked-up sound color is not beautiful and ideal. Also, in the use habit, it does not change much compared to using a conventional sound pickup.
Disclosure of Invention
The invention aims to provide a sound pick-up device with digital signal processing, which can realize sound pick-up and sound effect processing in one piece of equipment and solve the problems of insufficient grace and non-ideal tone color picked up by the traditional sound pick-up of a musical instrument.
In order to achieve the purpose, the invention provides the following scheme:
a sound pick-up device with digital signal processing comprises an audio input interface, an audio coding and decoding chip, a digital signal processing chip, a main control chip and an audio output interface;
the audio input interface is used for picking up audio;
the audio coding and decoding chip is respectively connected with the audio input interface, the digital signal processing chip and the audio output interface, and is used for sending a decoding result of the picked audio to the digital signal processing chip; the decoding result is a digital signal of the audio;
the main control chip is connected with the digital signal processing chip; the main control chip is used for sending the IR samples to the digital signal processing chip;
the digital signal processing chip is used for sending a decoding result and a convolution reverberation result of the IR sampling to the audio coding decoding chip;
the audio coding and decoding chip is used for sending the coding result of the convolution reverberation result to the audio output interface; and the coding result of the convolution reverberation result is an analog signal of the convolution reverberation result.
Optionally, the system further comprises an upper computer;
the upper computer is a desktop computer or a mobile information terminal;
the upper computer is connected with the main control chip and used for updating and increasing the IR sampling.
Optionally, the system further comprises a data transmission interface or a wireless transmission module;
the data transmission interface is a serial port, a parallel port, a USB, a live wire or a thunder nip; the wireless transmission module is an infrared transmission module, Bluetooth, WLAN or NFC;
the data transmission interface or the wireless transmission module is connected with the main control chip and used for transmitting the IR samples in the upper computer to the main control chip for verification and storage.
Optionally, the system further comprises a first volume adjusting module and a second volume adjusting module;
the first volume adjusting module is respectively connected with the audio input interface and the audio coding and decoding chip, and is used for adjusting the volume of the audio and sending the adjusted audio to the audio coding and decoding chip;
the second volume adjusting module is respectively connected with the audio encoding and decoding chip and the audio output interface, and is used for adjusting the volume of the encoding result of the convolution reverberation result and sending the adjusted encoding result of the convolution reverberation result to the audio output interface.
Optionally, the rechargeable battery is also arranged in the rechargeable battery;
the built-in rechargeable battery is respectively connected with the audio coding and decoding chip, the digital signal processing chip and the main control chip, and the built-in rechargeable battery is used for supplying power to the audio coding and decoding chip, the digital signal processing chip and the main control chip.
Optionally, the system further comprises a power interface;
the power interface is respectively connected with the built-in rechargeable battery and an external power supply, and the power interface is used for sending a power supply in the external power supply to the built-in rechargeable battery.
Optionally, the number of the audio input interfaces is one or more;
the audio input interface is connected with a moving coil microphone, a capacitor microphone, an electret microphone or a piezoelectric ceramic induction sound pick-up, and the audio input interface is used for picking up audio through the moving coil microphone, the capacitor microphone, the electret microphone or the piezoelectric ceramic induction sound pick-up.
Optionally, the audio output interface is a single channel or stereo.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a pickup device with digital signal processing, which integrates an audio input interface, an audio coding and decoding chip, a digital signal processing chip, a main control chip and an audio output interface, wherein audio is picked up through the audio input interface, the audio coding and decoding chip sends a decoding result of the picked audio to the digital signal processing chip, the digital signal processing chip carries out convolution reverberation on the decoding result and IR samples sent by the main control chip, the timbre of a musical instrument is beautified through the convolution reverberation, the defects that the picked audio signals are not beautiful and not ideal in the aspects of timbre and timbre are overcome, the pickup sound effect and the sound effect processing in one device are realized, and the problems that the timbre picked by the traditional musical instrument pickup device is not beautiful and not ideal are solved. Also, in the use habit, it does not change much compared to using a conventional sound pickup.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a block diagram of an embodiment of a sound pickup apparatus with digital signal processing according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a sound pick-up device with digital signal processing, which can realize sound pick-up and sound effect processing in one piece of equipment and solve the problems of insufficient grace and non-ideal tone color picked up by the traditional sound pick-up of a musical instrument.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example 1
Fig. 1 is a block diagram of an embodiment of a sound pickup apparatus with digital signal processing according to the present invention. Referring to fig. 1, the sound pickup apparatus with digital signal processing includes an audio input interface 101, an audio Codec (code in the figure) chip 102, a Digital Signal Processing (DSP) chip 103, a main control chip 104, and an audio output interface 105.
The audio input interface 101 is used to pick up audio. The picked-up audio signal is an analog signal.
The audio input interface 101 is one or more.
The audio input interface 101 is connected with a moving coil microphone, a capacitor microphone, an electret microphone or a piezoelectric ceramic induction pickup, and the audio input interface 101 picks up audio through the moving coil microphone, the capacitor microphone, the electret microphone or the piezoelectric ceramic induction pickup. Moving coil microphones, condenser microphones, electret microphones, or piezoelectric ceramic inductive pickups are all sources of audio.
The audio encoding and decoding chip 102 is respectively connected with the audio input interface 101, the digital signal processing chip 103 and the audio output interface 105, and the audio encoding and decoding chip 102 is used for sending a decoding result of the picked audio to the digital signal processing chip 103; the decoding result is a digital signal of audio.
The main control chip 104 is connected with the digital signal processing chip 103; the main control chip 104 is used for sending the IR samples to the digital signal processing chip 103.
The main control chip 104 functions include: and the system is communicated with the upper computer 106, receives and verifies the transmitted IR samples, stores the IR samples and transmits the IR samples to the digital signal processing chip 103.
The digital signal processing chip 103 is used for sending the decoding result and the convolution reverberation result of the IR samples to the audio encoding and decoding chip 102.
The processing of the digital signal processing chip 103 is well known in the art, and the present invention uses "convolutional reverberation" as the audio processing means, which is briefly described as follows: https:// www.midifan.com/modular-detail view-5974. htm. The digital signal processing chip 103 performs Finite Impulse Response (FIR) convolution operation, i.e., "convolution reverberation" algorithm, on the input signal, and the convolution operation is mostly used to add reverberation to the musical instrument recording in the audio processing field to create a sense of space, so it is generally called "convolution reverberation" audio processing mode, and the convolution operation is used to beautify the timbre of the musical instrument, thereby optimizing the audio signal. Where the input signal is the convolved IR parameters, i.e. the IR samples and the digital signal of the picked up audio signal. IR (impulse response) sampling, briefly described as follows: https:// www.midifan.com/modular-detailview-4874. htm. The most primitive way to obtain impulse response information is to collect the physical feedback of the audio impulse from the target acoustic space (e.g., studio or large stage), and is therefore called IR sampling. IR samples when transmitted or stored may also be referred to as IR sample files or IR files because this impulse response information, i.e., IR samples, is most commonly stored and transmitted as Wave audio file format.
The audio encoding and decoding chip 102 is configured to send an encoding result of the convolution reverberation result to the audio output interface 105; and the coding result of the convolution reverberation result is an analog signal of the convolution reverberation result.
The audio output interface 105 is a single channel or stereo, and the interface specification is one of 3.5mm/6.25 mm/XLR.
The sound pickup device with the digital signal processing also comprises an upper computer 106.
The sound pickup device with the digital signal processing function can independently process audio frequency, and only needs the participation of the upper computer 106 when updating and increasing IR sampling.
The upper computer 106 refers to a device which has stronger processing capability than the main control chip 104 and the digital signal processing chip 103 and is directly operated by an end user.
The upper computer 106 is a desktop computer or a mobile information terminal. The mobile information terminal is a laptop notebook computer or a tablet computer.
The upper computer 106 is connected with the main control chip 104, and the upper computer 106 is used for updating and increasing IR sampling. Thereby providing a convenient and quick way of changing audio processing parameters, i.e. IR samples. The existing digital sound pick-up has no effect processing or fixed digital processing, and parameters can not be changed conveniently and flexibly. Although there are examples in the prior art in which a DSP is integrated into a sound pickup to achieve reverberation effect, it is common to simply adjust individual parameters such as "reverberation intensity", "room size", etc., and it is not easy to replace such parameters with a whole IR sample.
The main control chip 104 communicates with the upper computer 106 so that new IR samples can be quickly and easily replaced. The sound pick-up device with the digital signal processing function is matched with the upper computer 106 to achieve the maximum effect, matched software on the upper computer 106 needs to be developed for the purpose, and a certain number of preset IR samples are provided for a user to download and select.
The sound pickup device with the digital signal processing also comprises a data transmission interface 107 or a wireless transmission module 108. The data transmission interface 107 is a wired transmission interface, and the wireless transmission module 108 is a wireless transmission interface.
The data transmission interface 107 is a serial port, a parallel port, a USB, a firewire or a thunder fog. That is, the wired connection may be one or more of a serial port, a parallel port, a USB, a firewire, and a thunderbolt. The convolved IR parameters, i.e. the IR samples, may be updated by a wired connection, specifically: the upper computer 106 communicates with the main control chip 104, and the main control chip 104 completely receives the IR samples and writes the IR samples to the digital signal processing chip 103 after the IR samples are verified. The upper computer 106 and the main control chip 104 are connected in a serial port mode, the serial port communication format is ' 115200bauds ', the data bit 8, the stop bit 1 and the check bit are not available ', the convolved IR parameter is in a one-dimensional array format, the sampling rate is 44100hz, the length is 10 seconds, the array length is 44100x10 elements in total, the precision is 16 bits, each element is serialized into 16-bit signed integer and is used as an information load of serial port communication. The above parameters are preferred and other parameters may be selected, but the effect is not so good. The convolved IR parameters are sent from the upper computer 106 to the digital signal processing chip 103, and after the transmission is completed, the digital signal processing chip 103 loads the convolved IR parameters into the memory. At this moment, the parameter of the convolution operation performed by the digital signal processing chip 103 on the audio signal is the just updated parameter.
The wireless transmission module 108 is an infrared transmission module, bluetooth, WLAN or NFC. I.e. the wireless connection may be one or more of infrared transmission, bluetooth, WLAN (wireless local area network), NFC (near field communication).
The data transmission interface 107 or the wireless transmission module 108 is connected with the main control chip 104, and the data transmission interface 107 or the wireless transmission module 108 is used for transmitting the IR samples in the upper computer 106 to the main control chip 104 for verification and storage.
The data transmission interface 107 or the wireless transmission module 108 is connected to the main control chip 104, and is used for updating the program parameters in the digital signal processing chip 103 or programming a new processing program. The program is programmed in the main control chip 104, and the program functions as: and the system is communicated with the upper computer 106, receives and verifies the transmitted IR samples, stores the IR samples and transmits the IR samples to the digital signal processing chip 103. The main control chip 104 communicates with the upper computer 106 in a wired or wireless manner, receives IR samples completely, and transmits the IR samples to the digital signal processing chip 103.
The sound pickup apparatus with digital signal processing also includes a first volume adjusting module 109 and a second volume adjusting module 110.
The first volume adjusting module 109 is respectively connected to the audio input interface 101 and the audio codec chip 102, and the first volume adjusting module 109 is configured to adjust the volume of the audio picked up by the audio input interface 101, and send the adjusted audio to the audio codec chip 102.
The second volume adjusting module 110 is connected to the audio encoding and decoding chip 102 and the audio output interface 105, and the second volume adjusting module 110 is configured to adjust the volume of the encoding result of the convolution reverberation result and send the encoding result of the adjusted convolution reverberation result to the audio output interface 105.
The sound pickup device with digital signal processing also comprises a built-in rechargeable battery 111.
The built-in rechargeable battery 111 is respectively connected with the audio encoding and decoding chip 102, the digital signal processing chip 103 and the main control chip 104, and the built-in rechargeable battery 111 is used for supplying power to the audio encoding and decoding chip 102, the digital signal processing chip 103 and the main control chip 104.
The sound pick-up device with the digital signal processing also comprises a power supply interface (not shown in the figure).
The power interface is connected to the built-in rechargeable battery 111 and an external power supply (not shown), and the power interface is used for transmitting power from the external power supply to the built-in rechargeable battery 111.
Example 2
The sound pick-up device with the digital signal processing function provided by the embodiment comprises a piezoelectric ceramic sound pick-up and a moving coil microphone which are used as input, wherein the audio signals input by the piezoelectric ceramic sound pick-up and the audio signals input by the moving coil microphone are mutually independent and do parallel processing without mutual interference. A mono audio output is set. The audio input and output interfaces all use 6.25mm single sound channel interfaces; a TI PCM3060 chip (i.e., an audio encoding and decoding chip in embodiment 1) is further provided, the TI PCM3060 chip is connected with the piezoelectric ceramic microphone and the moving coil microphone through an audio input interface, and the TI PCM3060 chip is used for audio encoding and audio decoding. The sampling rate of the audio is 192khz, and the sampling precision is 24 bits (this is the highest sampling rate and sampling precision of the audio codec chip, and the highest parameter is artificially selected as an embodiment parameter). A TI AM4372 is provided as a master chip for providing the IR parameters of the convolution. Setting an ADI ADSP-SC582 chip as a DSP chip, performing convolution operation with the audio coding and decoding chip (TI PCM3060 chip) via I2And S (inter-chip audio interface) mode connection. In the DSP chip, Finite Impulse Response (FIR) convolution operation is carried out on an input signal, and an operation result is converted into an analog signal through an audio coding and decoding chip (TI PCM3060 chip) and is output. Wherein the IR parameters of the convolution can be connected by wireAnd (6) updating. The wired connection mode is as follows: through USB support of the DSP chip, a USB serial port device is simulated on the USB interface, the convolved IR parameters are transmitted to the DSP chip through the simulated serial port, and the IR parameters are automatically updated after the DSP chip completely receives data, namely IR sampling.
The invention discloses a pickup device with digital signal processing, which uses an adjustable digital signal processing chip which is easy to update parameters to process picked original musical instrument sound in real time and then output the sound to mixing equipment (such as a sound console, in stage performance, if a plurality of players/a plurality of musical instruments exist, respective audio output is required to be connected to the sound console to adjust respective volume level and then output to a power amplifier in a unified way, and the latter is connected to a loudspeaker to output audio), by adopting the structure of the digital signal processing chip, the finite impulse response convolution operation is utilized in the digital signal processing chip, the convolution reverberation algorithm is used for processing the picked audio signals, so that the tone color of the musical instrument is beautified, the tone quality is improved, and the defects that the picked audio signals are not beautiful and ideal in tone color and tone quality are overcome. By integrating the audio input interface, the audio coding and decoding chip, the digital signal processing chip, the main control chip and the audio output interface, pickup and sound effect processing can be realized in one device, and the problems that the tone color picked by the traditional musical instrument pickup is not beautiful and ideal are solved.
The invention discloses a sound pick-up device with digital signal processing, which realizes sound pick-up and sound effect processing in one device and has higher integration and customizability. The innovation of the invention is that a DSP structure is arranged, and the audio signal processing process used by the invention is 'convolutional reverberation', which is common knowledge in the field. The invention creatively utilizes a convolution reverberation algorithm, uses the DSP chip to further process the sound emitted by the improved musical instrument, makes up the defects of the improved musical instrument in tone quality and tone quality, reduces or even eliminates the difference between the improved musical instrument and the traditional musical instrument in playing sound, enables the improved musical instrument to achieve the effect equivalent to the traditional musical instrument, reduces the requirement on wild snake skin, and plays a positive role in protecting the environment, protecting wild animals and inheriting and developing national musical instrument culture.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are presented solely to aid in the understanding of the apparatus and its core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A sound pick-up device with digital signal processing is characterized by comprising an audio input interface, an audio coding and decoding chip, a digital signal processing chip, a main control chip and an audio output interface;
the audio input interface is used for picking up audio;
the audio coding and decoding chip is respectively connected with the audio input interface, the digital signal processing chip and the audio output interface, and is used for sending a decoding result of the picked audio to the digital signal processing chip; the decoding result is a digital signal of the audio;
the main control chip is connected with the digital signal processing chip; the main control chip is used for sending the IR samples to the digital signal processing chip;
the digital signal processing chip is used for sending a decoding result and a convolution reverberation result of the IR sampling to the audio coding decoding chip;
the audio coding and decoding chip is used for sending the coding result of the convolution reverberation result to the audio output interface; and the coding result of the convolution reverberation result is an analog signal of the convolution reverberation result.
2. The sound pickup device with digital signal processing as claimed in claim 1, further comprising an upper computer;
the upper computer is a desktop computer or a mobile information terminal;
the upper computer is connected with the main control chip and used for updating and increasing the IR sampling.
3. The sound pickup device with digital signal processing as claimed in claim 2, further comprising a data transmission interface or a wireless transmission module;
the data transmission interface is a serial port, a parallel port, a USB, a live wire or a thunder nip; the wireless transmission module is an infrared transmission module, Bluetooth, WLAN or NFC;
the data transmission interface or the wireless transmission module is connected with the main control chip and used for transmitting the IR samples in the upper computer to the main control chip for verification and storage.
4. The sound pickup device with digital signal processing as claimed in claim 1, further comprising a first volume adjusting module and a second volume adjusting module;
the first volume adjusting module is respectively connected with the audio input interface and the audio coding and decoding chip, and is used for adjusting the volume of the audio and sending the adjusted audio to the audio coding and decoding chip;
the second volume adjusting module is respectively connected with the audio encoding and decoding chip and the audio output interface, and is used for adjusting the volume of the encoding result of the convolution reverberation result and sending the adjusted encoding result of the convolution reverberation result to the audio output interface.
5. The sound pickup device with digital signal processing as claimed in claim 1, further comprising a built-in rechargeable battery;
the built-in rechargeable battery is respectively connected with the audio coding and decoding chip, the digital signal processing chip and the main control chip, and the built-in rechargeable battery is used for supplying power to the audio coding and decoding chip, the digital signal processing chip and the main control chip.
6. The sound pickup device with digital signal processing as claimed in claim 5, further comprising a power interface;
the power interface is respectively connected with the built-in rechargeable battery and an external power supply, and the power interface is used for sending a power supply in the external power supply to the built-in rechargeable battery.
7. The sound pickup device with digital signal processing as claimed in claim 1, wherein the audio input interface is one or more;
the audio input interface is connected with a moving coil microphone, a capacitor microphone, an electret microphone or a piezoelectric ceramic induction sound pick-up, and the audio input interface is used for picking up audio through the moving coil microphone, the capacitor microphone, the electret microphone or the piezoelectric ceramic induction sound pick-up.
8. The sound pickup device with digital signal processing as claimed in claim 1, wherein the audio output interface is a mono or stereo sound.
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| CN114155826A (en) * | 2021-11-15 | 2022-03-08 | 深圳市卓乐科技有限公司 | Electric Huqin and control system capable of realizing multi-tone conversion |
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