CN203151729U - Multifunctional earphone - Google Patents
Multifunctional earphone Download PDFInfo
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- CN203151729U CN203151729U CN 201320038727 CN201320038727U CN203151729U CN 203151729 U CN203151729 U CN 203151729U CN 201320038727 CN201320038727 CN 201320038727 CN 201320038727 U CN201320038727 U CN 201320038727U CN 203151729 U CN203151729 U CN 203151729U
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Abstract
The utility model provides a multifunctional earphone comprising an electroacoustic reduction unit, a high response environment audio frequency reception unit, an environment audio frequency signal processing unit, a high fidelity audio signal correction processing unit, an audio frequency mixing output unit, an internal reference offset unit and a passive mode selection unit; the high response environment audio frequency reception unit is connected with the environment audio frequency signal processing unit; the environment audio frequency signal processing unit and an output terminal of the high fidelity audio signal correction processing unit are respectively connected with the audio frequency mixing output unit; an output terminal of the audio frequency mixing output unit is connected with the passive mode selection unit; an output terminal of the passive mode selection unit is connected with an input terminal of the electroacoustic reduction unit; and an input terminal of the internal reference offset unit is connected with 1/2 of power voltage, and an output terminal of the internal reference offset unit is connected with the passive mode selection unit. The earphone realizes a passive earphone function, an active noise elimination function, a high fidelity audio frequency correction function and a de-noising hearing-aid function, and satisfies demands of users under different environment.
Description
Technical field
The utility model relates to the earphone technical field, relates in particular to a kind of multifunctional headphone.
Background technology
The continuous variation with external environment of improving constantly along with people's living standard, around our current life, spread all over all kinds of noise sources, ever-increasing noise source has produced very big influence to daily life, working and learning, and the noise spectrum composition under the current varying environment has very big difference, and people also are different to the demand of noise reduction also under different environment; As in normal work, perhaps only need to reduce most of annoying low-frequency noise, other be not need to decay as one's voice in speech, but when you learn in a fixing place, at this moment you need decay all noises, to build an absolutely quiet environment, this moment, you just needed the product of a comprehensive noise reduction, again when you need under the particular surroundings in the meeting-place etc., both needed to reduce annoying noise jamming, but need hear clearly voice the time, the product of a noise reduction hearing aid is fit closely; Therefore, at present, the product that multi-functional noise reduction is combined with hearing aid has the very big market demand.
Summary of the invention
The purpose of this utility model is to provide a kind of multifunctional headphone, has initiatively noise elimination function, HD Audio debugging functions and de-noising hearing-aid function simultaneously, to satisfy the different demands that people reduce the noise of various complexity under different environment.
Another purpose of the present utility model is to provide a kind of multifunctional headphone, has advantages such as easy to carry, convenient and practical, also can work in simultaneously under the passive mode to use as common headphones, can also listen to high-quality music under active mode.
The purpose of this utility model is achieved through the following technical solutions.
A kind of multifunctional headphone, comprise the electroacoustic reduction unit, also comprise: battery and power-supply unit, highly sensitive environment audio frequency receiving element, environmental audio signal processing unit, Hi-Fi audio signal correcting process unit, audio mix output unit, internal reference bias unit and passive mode selected cell;
The input of described highly sensitive environment audio frequency receiving element receives the input that outside environmental audio signal, output are connected to the environmental audio signal processing unit;
The input of described environmental audio signal processing unit and the 1st input that the output of highly sensitive environment audio frequency receiving element is connected, output is connected to the audio mix output unit comprise full range initiatively denoising Processing circuit, low frequency active denoising Processing circuit and de-noising hearing aid treatment circuit;
The input of described Hi-Fi audio signal correcting process unit receives the 2nd input that extraneous hi-fi music signal, the output that inputs to earphone inside is connected to the audio mix output unit;
Described audio mix output unit carries out mixed processing exports the passive mode selected cell to by output circuit the 3rd input by its 1st input and the 2nd input difference reception environment audio frequency and Hi-Fi audio signal with environment audio frequency and Hi-Fi audio signal;
The 2nd output of described passive mode selected cell is connected with the 2nd end of electroacoustic reduction unit, the 1st output of passive mode selected cell is connected with the 1st end of electroacoustic reduction unit, output signal output with the audio mix output unit drives described electroacoustic reduction unit.
The input of described internal reference bias unit is connected to 1/2 supply voltage, and output is connected to the 1st input of passive mode selected cell.
Preferably, described battery and power-supply unit comprise battery, DC/DC power supply changeover device, battery voltage detection circuit;
Described battery is connected respectively with the input of DC/DC power supply changeover device and the input of battery voltage detection circuit;
The output of described DC/DC power supply changeover device is connected respectively with highly sensitive environment audio frequency receiving element, environmental audio signal processing unit, Hi-Fi audio signal correcting process unit, audio mix output unit, internal reference bias unit, passive mode selected cell;
The output of described battery voltage detection circuit is connected with the DC/DC power supply changeover device.
Preferably, this multifunctional headphone also comprises connector, first signal buffer, secondary signal buffer; Described hi-fi music signal is connected to the input of Hi-Fi audio signal correcting process unit successively by connector, first signal buffer, the output of Hi-Fi audio signal correcting process unit is connected to the 2nd input of audio mix output unit by the secondary signal buffer.
Preferably, described environmental audio signal processing unit comprises: broadband filter, low pass filter, band stop filter, band pass filter, selector 1, selector 2, signals reverse processor, signal be processor in the same way;
The input of described broadband filter, low pass filter, band stop filter, band pass filter all is connected to the output of highly sensitive environment audio frequency receiving element;
The output of described broadband filter connects the 1st input of selector 1, and the output of low pass filter connects the 2nd input of selector 1, and the output of band stop filter connects the 3rd input of selector 1; The output of selector 1 is connected to the input of signals reverse processor;
The output of band pass filter is connected to the signal input of processor in the same way, and the signal output of processor in the same way is connected to the 3rd input of selector 2;
The output of described signals reverse processor is connected the back and is connected with the 1st input of audio mix output unit with the output of selector 2.
Preferably, described environmental audio signal processing unit is under full range active de-noising mode of operation, the 1st input of described selector 1 and its output closure, the 2nd input and the disconnection of its output, the 3rd input and its output disconnect, and the 3rd input of described selector 2 and its output disconnect.
Preferably, described environmental audio signal processing unit is under low frequency active de-noising mode of operation, the 2nd input of described selector 1 and its output closure, the 1st input and the disconnection of its output, the 3rd input and its output disconnect, and the 3rd input of described selector 2 and its output disconnect.
Preferably, described environmental audio signal processing unit is under de-noising hearing aid mode of operation, the 3rd input of described selector 1 and its output closure, the 1st input and the disconnection of its output, the 2nd input and its output disconnect the 3rd input of described selector 2 and its output closure.
The utility model compared with prior art, beneficial effect is: the multifunctional headphone that the utility model provides, the function that has comprises Passive earphone function, active noise elimination function, HD Audio debugging functions and de-noising hearing-aid function, can offer the multi-functional application impression of user, make things convenient for the demand of user under varying environment, avoid having only Headphone device awkward awkward problem under some special environment of single-mode, the diversification of mode of operation simultaneously also can be satisfied more user, has advantages such as convenient and practical.
Description of drawings
Fig. 1 is the theory diagram of the utility model multifunctional headphone.
Fig. 2 is battery and the power-supply unit theory diagram of the utility model multifunctional headphone.
Fig. 3 is the full range de-noising theory diagram of the utility model multifunctional headphone.
Fig. 4 is the low frequency de-noising theory diagram of the utility model multifunctional headphone.
Fig. 5 is the de-noising hearing aid theory diagram of the utility model multifunctional headphone.
Fig. 6 is the HD Audio correction theory diagram of the utility model multifunctional headphone.
Fig. 7 is the passive switching principle block diagram of the utility model multifunctional headphone.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Multifunctional headphone of the present utility model, the function that has comprise Passive earphone function, full range initiatively de-noising function, low frequency active de-noising function, de-noising hearing-aid function, HD Audio debugging functions.
See also shown in Figure 1ly, multifunctional headphone comprises in the present embodiment: battery and power-supply unit 1, highly sensitive environment audio frequency receiving element 2, environmental audio signal processing unit 3, Hi-Fi audio signal correcting process unit 4, audio mix output unit 5, passive mode selected cell 6, electroacoustic reduction unit 7, internal reference bias unit 8.
Battery and power-supply unit 1 is used for the power supply conversion, finishes the power demands of entire headset by power supply switch technology efficiently, satisfies high-quality power supply supply simultaneously.
Highly sensitive environment audio frequency receiving element 2 is used for receiving all kinds of audio signals of external complex, wherein also comprises noise signal, and acoustic signals is reduced into the signal of telecommunication uses for subsequent process circuit.
Environmental audio signal processing unit 3 is for the treatment of the signal that receives from highly sensitive environment audio frequency receiving element 2, and these signal pins are carried out the processing of full range noise reduction, low frequency noise reduction and noise reduction hearing aid to the needs of function, and the signal after will handling is exported to audio mix output unit 5 after selecting by function.
Hi-Fi audio signal correcting process unit 4 can remedy the intrinsic acoustics defective of earphone self for the treatment of the audio signal that is input to by the outside in the earphone by correcting process, realizes the high-fidelity performance of sound with flexible form.
Audio mix output unit 5 is used for that the audio signal after the signal after 3 processing of ambient signal processing unit and 4 processing of Hi-Fi audio signal correcting process unit is carried out ratio and mixes output.
Passive mode selected cell 6 is used for switching the passive mode of operation of earphone, its principle as shown in Figure 7, active circuit is to need power supply to work, if but under the situation of running down of battery, active circuit is with regard to cisco unity malfunction, when being chosen in passive mode work, this device just can be realized common Passive earphone function under the situation that does not need the power supply supply.
The input of described internal reference bias unit 8 is connected to 1/2 supply voltage, and output is connected to the 1st input of passive mode selected cell 6.
See also the theory diagram of battery shown in Figure 2 and power-supply unit 1.Battery and power-supply unit 1 provide stable, high-quality, power supply efficiently for this device of entire headset, it is made up of a high efficiency DC/DC power supply changeover device and high-precision battery voltage detection circuit, as shown in Figure 2, battery is connected to the input of DC/DC power supply changeover device, also be connected to simultaneously the input of battery voltage detection circuit, the output of DC/DC power supply changeover device is the power source supply end of entire headset, battery voltage detection circuit is responsible for detecting the discharge threshold values of cell voltage, prevents the battery over-discharge can and damages.
Environmental audio signal processing unit 3 has three kinds of mode of operations, is respectively: full range is de-noising mode of operation, low frequency active de-noising mode of operation and de-noising hearing aid mode of operation initiatively.
The 1st kind of mode of operation of environmental audio signal processing unit 3, initiatively the denoising Processing circuit is as shown in Figure 3 for full range: highly sensitive environment audio frequency receiving element 2 collects environmental audio signal through behind the buffer, be connected to broadband filter, export to the signals reverse processor after selecting through selector 1 again, to export after the gain reverse process of environment full range signal by demand that receive, the reverse environment full range signal of output drives electroacoustic reduction unit 7 and produces the sound wave close with the ambient signal opposite magnitude, reaches the purpose of full range de-noising.
The 2nd kind of mode of operation of environmental audio signal processing unit 3, low frequency active denoising Processing circuit as shown in Figure 4, highly sensitive environment audio frequency receiving element 2 collects environmental audio signal through behind the buffer, be connected to low pass filter, export to the signals reverse processor after selecting through selector 1 again, to export after the gain reverse process of environment low frequency signal by demand that receive, the reverse environment low frequency signal of output drives electroacoustic reduction unit 7 and produces the sound wave close with the ambient signal opposite magnitude, reaches the purpose of low frequency de-noising.
The 3rd kind of mode of operation of environmental audio signal processing unit 3, de-noising hearing aid treatment circuit as shown in Figure 5, highly sensitive environment audio frequency receiving element 2 collects environmental audio signal through behind the buffer, be connected to band pass filter and band stop filter, the output of band stop filter is exported to the signals reverse processor after being connected to selector 1; The output of band pass filter then is connected to the signal input of processor in the same way, after the signal that the process homophase is strengthened passes through selector 2 again, be mixed together with the signal of front signals reverse processor, final mixed composite signal output drives electroacoustic reduction unit 7 and produces and voice close with environment particular noise signals opposite magnitude through the sound wave of reinforcement, reaches when not only reducing most noise but also can promote the purpose of the definition of voice.
Hi-Fi audio signal correcting process unit 4 can be with after being input to the Audio Signal Processing of earphone, realize high-quality audio frequency effect with the inherent shortcoming that remedies earphone, as shown in Figure 6, the audio signal of outside input is the correction circuit of design specially through being connected to behind the buffer according to the electroacoustic defective of earphone, realization is by the electroacoustic defective of electronic circuit correction earphone, to reach high-quality voice reproducing effect; Mix the back through the signal after the signal output back after 4 processing of Hi-Fi audio signal correcting process unit and 3 processing of environmental audio signal processing unit and drive electroacoustic reduction unit 7 jointly, realize high-quality audio frequency reduction.
In the present embodiment, full range initiatively denoising Processing circuit adopts reverse cancellation technology, with the audio-frequency information reverse process in the full range scope of highly sensitive environment audio frequency receiving element 2 collections, just can all eliminate the sound of all audibility ranges of the overwhelming majority of external environment condition, to build very quietly surrounding environment.Low frequency is the denoising Processing circuit initiatively, adopt reverse cancellation technology, with the audio-frequency information reverse process in the low-frequency range of highly sensitive environment audio frequency receiving element 2 collections, just can significantly eliminate low-frequency noise annoying in the external environment condition, but do not eliminate the noise signal of upper frequency, even to make things convenient for the user when using this device, can either experience under the situation of quiet relatively environment, also can hear the part sound of external environment condition, as the number voice signal of language, car horn or burst.De-noising hearing aid treatment circuit, adopt reverse cancellation technology and forward reinforcement technology, audio signal in the voice scope of highly sensitive environment audio frequency receiving element 2 collections is handled in the same way, other all signals beyond the voice are then carried out reverse process, just can realize the noise signal of the low frequency in the external environment condition and high frequency is significantly eliminated, strengthen the signal of voice spectral range simultaneously, allow people can listen to external language information more clearly, such function is highly suitable for using in noisy meeting-place, makes people's communication lighter.Hi-Fi audio signal correcting process unit 4 adopts electronic technology flexibly that the signal of input earphone is optimized processing, to remedy the intrinsic acoustics defective of earphone self, reaches final perfect sound and embodies.Passive mode selected cell 6 adopts passive switching, realizes the passive use of earphone, and when the running down of battery of earphone, the user can switch to earphone passive mode of operation, can do Passive earphone and use.To sum up, present embodiment can be realized full range de-noising, low frequency de-noising, de-noising hearing aid, hi-fi music compensation and active and passive handoff functionality, for being used for providing multiple application demand, satisfies the use under the varying environment.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. multifunctional headphone, comprise the electroacoustic reduction unit, it is characterized in that, also comprise: battery and power-supply unit, highly sensitive environment audio frequency receiving element, environmental audio signal processing unit, Hi-Fi audio signal correcting process unit, audio mix output unit, internal reference bias unit and passive mode selected cell;
The input of described highly sensitive environment audio frequency receiving element receives the input that outside environmental audio signal, output are connected to the environmental audio signal processing unit;
The input of described environmental audio signal processing unit and the 1st input that the output of highly sensitive environment audio frequency receiving element is connected, output is connected to the audio mix output unit comprise full range initiatively denoising Processing circuit, low frequency active denoising Processing circuit and de-noising hearing aid treatment circuit;
The input of described Hi-Fi audio signal correcting process unit receives the 2nd input that extraneous hi-fi music signal, the output that inputs to earphone inside is connected to the audio mix output unit;
Described audio mix output unit carries out mixed processing exports the passive mode selected cell to by output circuit the 3rd input by its 1st input and the 2nd input difference reception environment audio frequency and Hi-Fi audio signal with environment audio frequency and Hi-Fi audio signal;
The 2nd output of described passive mode selected cell is connected with the 2nd end of electroacoustic reduction unit, the 1st output of passive mode selected cell is connected with the 1st end of electroacoustic reduction unit, output signal output with the audio mix output unit drives described electroacoustic reduction unit.
The input of described internal reference bias unit is connected to 1/2 supply voltage, and output is connected to the 1st input of passive mode selected cell.
2. multifunctional headphone as claimed in claim 1 is characterized in that, described battery and power-supply unit comprise battery, DC/DC power supply changeover device, battery voltage detection circuit;
Described battery is connected respectively with the input of DC/DC power supply changeover device and the input of battery voltage detection circuit;
The output of described DC/DC power supply changeover device is connected respectively with highly sensitive environment audio frequency receiving element, environmental audio signal processing unit, Hi-Fi audio signal correcting process unit, audio mix output unit, internal reference bias unit, passive mode selected cell;
The output of described battery voltage detection circuit is connected with the DC/DC power supply changeover device.
3. multifunctional headphone as claimed in claim 1 is characterized in that, this multifunctional headphone also comprises connector, first signal buffer, secondary signal buffer; Described hi-fi music signal is connected to the input of Hi-Fi audio signal correcting process unit successively by connector, first signal buffer, the output of Hi-Fi audio signal correcting process unit is connected to the 2nd input of audio mix output unit by the secondary signal buffer.
4. as the arbitrary described multifunctional headphone of claim 1 to 3, it is characterized in that described environmental audio signal processing unit comprises: broadband filter, low pass filter, band stop filter, band pass filter, selector 1, selector 2, signals reverse processor, signal be processor in the same way;
The input of described broadband filter, low pass filter, band stop filter, band pass filter all is connected to the output of highly sensitive environment audio frequency receiving element;
The output of described broadband filter connects the 1st input of selector 1, and the output of low pass filter connects the 2nd input of selector 1, and the output of band stop filter connects the 3rd input of selector 1; The output of selector 1 is connected to the input of signals reverse processor;
The output of band pass filter is connected to the signal input of processor in the same way, and the signal output of processor in the same way is connected to the 3rd input of selector 2;
The output of described signals reverse processor is connected the back and is connected with the 1st input of audio mix output unit with the output of selector 2.
5. multifunctional headphone as claimed in claim 4, it is characterized in that, described environmental audio signal processing unit is under full range active de-noising mode of operation, the 1st input of described selector 1 and its output closure, the 2nd input and the disconnection of its output, the 3rd input and its output disconnect, and the 3rd input of described selector 2 and its output disconnect.
6. multifunctional headphone as claimed in claim 4, it is characterized in that, described environmental audio signal processing unit is under low frequency active de-noising mode of operation, the 2nd input of described selector 1 and its output closure, the 1st input and the disconnection of its output, the 3rd input and its output disconnect, and the 3rd input of described selector 2 and its output disconnect.
7. multifunctional headphone as claimed in claim 4, it is characterized in that, described environmental audio signal processing unit is under de-noising hearing aid mode of operation, the 3rd input of described selector 1 and its output closure, the 1st input and the disconnection of its output, the 2nd input and its output disconnect the 3rd input of described selector 2 and its output closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320038727 CN203151729U (en) | 2013-01-18 | 2013-01-18 | Multifunctional earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320038727 CN203151729U (en) | 2013-01-18 | 2013-01-18 | Multifunctional earphone |
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| CN203151729U true CN203151729U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320038727 Expired - Lifetime CN203151729U (en) | 2013-01-18 | 2013-01-18 | Multifunctional earphone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007554A (en) * | 2015-06-15 | 2015-10-28 | 广东欧珀移动通信有限公司 | Earphone de-noising method and device |
| CN110708629A (en) * | 2019-10-28 | 2020-01-17 | 深圳稳泰电声有限公司 | Bluetooth earphone |
| CN111885460A (en) * | 2020-07-29 | 2020-11-03 | 歌尔科技有限公司 | Transparent mode adjusting device and method of wireless earphone and wireless earphone |
-
2013
- 2013-01-18 CN CN 201320038727 patent/CN203151729U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007554A (en) * | 2015-06-15 | 2015-10-28 | 广东欧珀移动通信有限公司 | Earphone de-noising method and device |
| CN105007554B (en) * | 2015-06-15 | 2018-05-04 | 广东欧珀移动通信有限公司 | Earphone noise-reduction method and device |
| CN110708629A (en) * | 2019-10-28 | 2020-01-17 | 深圳稳泰电声有限公司 | Bluetooth earphone |
| CN111885460A (en) * | 2020-07-29 | 2020-11-03 | 歌尔科技有限公司 | Transparent mode adjusting device and method of wireless earphone and wireless earphone |
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Granted publication date: 20130821 |
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| CX01 | Expiry of patent term |