CN201499287U - Sound equipment volume controller with environment noise feedback - Google Patents
Sound equipment volume controller with environment noise feedback Download PDFInfo
- Publication number
- CN201499287U CN201499287U CN2009201733362U CN200920173336U CN201499287U CN 201499287 U CN201499287 U CN 201499287U CN 2009201733362 U CN2009201733362 U CN 2009201733362U CN 200920173336 U CN200920173336 U CN 200920173336U CN 201499287 U CN201499287 U CN 201499287U
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Abstract
The utility model relates to a sound equipment volume controller with environment noise feedback. The sound equipment volume controller comprises a sound source for providing sound signals, a single chip microcomputer for coordinating and controlling, and a trumpet for outputting the sound signals, and further comprises a program controlling audio frequency amplifying circuit connected with the single chip microcomputer, a sound sensor for converting background noise signals into electric signals, and an environment noise checking circuit connected with the sound sensor, wherein the output of the program controlling audio frequency amplifying circuit is connected with the trumpet, and the output of the environment noise checking circuit is connected with the single chip microcomputer. The sound equipment volume controller has the active effects that the controller has the ability of sensing environment sound, can dynamically adjust the volume in certain range according to the noise condition, and prevents environment noise from affecting using feeling of users.
Description
Technical field
The utility model relates to the acoustics volume controller of a kind of band border noise feedback, belongs to the household electrical appliance category.
Background technology
In daily use sound equipment, be the volume of setting sound equipment earlier, play sound by volume then with regard to this setting.Even after environment change, raise through making ambient noise such as train, automobile, the information that this time, sound equipment was play just may be can not hear clearly, and does not perhaps hear fully.Such drawback causes great loss sometimes.
Summary of the invention
The purpose of this utility model is in order to overcome weak point of the prior art, the acoustics volume controller of a kind of band border noise feedback has been proposed, ability with induced environment noise, can dynamically regulate volume within the specific limits, avoid ambient noise to influence user's use experience according to noise situations.
The technical scheme that its technical problem that solves the utility model adopts is:
The acoustics volume controller of a kind of band border noise feedback, comprise the sound source that voice signal is provided, the single-chip microcomputer of coordinating and controlling and the loudspeaker of output sound signal, also comprise the program control audio amplifier circuit that is connected with single-chip microcomputer, described program control audio amplifier circuit output connects described loudspeaker, ambient noise signal is converted to the sound transducer of the signal of telecommunication, the environment noise test circuit that is connected with described sound transducer, described environment noise test circuit output connects described single-chip microcomputer.
Described background noise testing circuit, comprise that capacitor C 1 one ends connect described sound transducer, the other end connects resistance R 8, the in-phase input end of resistance R 9 and operational amplifier 7, described resistance R 8 other ends connect power supply VCC, described resistance R 9 other end ground connection, the inverting input of described operational amplifier 7 connects resistance R 10 and resistance R 11, described resistance R 10 other ends connect the output of described operational amplifier 7, described resistance R 11 other ends connect capacitor C 2, described capacitor C 2 other end ground connection, the output of described operational amplifier 7 connects the AD mouth of described single-chip microcomputer.
Described program control audio amplifier circuit comprises audio amplifier circuit 8 and programme-controlled gain circuit.
Described audio amplifier circuit 8 is provided with input and connects described single-chip microcomputer, and output connects described loudspeaker.
Described programme-controlled gain circuit, program control variable connector 9 is set, the common port X of described program control variable connector 9 connects the input of described audio amplifier circuit 8, the port x 0 of described program control variable connector 9 connects the port x 1 of resistance R 1 and described program control variable connector 9 by resistance R 0, described resistance R 1 other end connects the port x 2 of resistance R 2 and described program control variable connector 9, described resistance R 2 other ends connect the port x 3 of resistance R 3 and described program control variable connector 9, described resistance R 3 other ends connect the port x 4 of resistance R 4 and described program control variable connector 9, described resistance R 4 other ends connect the port x 5 of resistance R 5 and described program control variable connector 9, described resistance R 5 other ends connect the port x 6 of resistance R 6 and described program control variable connector 9, described resistance R 6 other ends connect the port x 7 of resistance R 7 and described program control variable connector 9, described resistance R 7 other ends connect the output of described audio amplifier circuit 8, the control port A port of described program control variable connector 9, B port and C port are connected IO1 mouth, IO2 mouth and the IO3 mouth of described single-chip microcomputer respectively.
Described single-chip microcomputer is provided with the multiplication factor of described program control audio amplifier circuit.
The beneficial effects of the utility model mainly show: 1, can be in the moment of sound equipment no-output, and the testing environment noise situations; 2, automatic regulating volume keeps certain auditory effect, prevents to miss important information.
Description of drawings
Fig. 1 is the theory diagram of the acoustics volume controller of band border noise feedback;
Fig. 2 is the environment noise test circuit theory diagrams of the acoustics volume controller of band border noise feedback;
Fig. 3 is the program control audio amplifier circuit schematic diagram of the acoustics volume controller of band border noise feedback;
Fig. 4 is the flow chart of the acoustics volume controller of band border noise feedback.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1-4, the acoustics volume controller of a kind of band border noise feedback, comprise the sound source 1 that voice signal is provided, the single-chip microcomputer 2 of coordinating and controlling and the loudspeaker 6 of output sound signal, also comprise the program control audio amplifier circuit 5 that is connected with described single-chip microcomputer 2, described program control audio amplifier circuit 5 outputs connect described loudspeaker 6, ambient noise signal is converted to the sound transducer 4 of the signal of telecommunication, with the environment noise test circuit 3 that described sound transducer 4 is connected, described environment noise test circuit 3 outputs connect described single-chip microcomputer 2.
Described sound source 1 comprises the voice signal of broadcast receiver, CD or VCD, DVD output.Described sound source 1 sends to described single-chip microcomputer 2 with voice signal, and described single-chip microcomputer 2 converts voice signal to digital audio and video signals by the AD conversion.Described single-chip microcomputer 2 amplifies certain multiple with digital audio and video signals according to the volume that the user sets, and flows to described program control audio amplifier circuit 5 by the DA conversion again.
Described program control audio amplifier circuit 5 comprises audio amplifier circuit 8 and programme-controlled gain circuit.Described audio amplifier circuit 8 inputs connect described single-chip microcomputer 2, and output connects described loudspeaker 6, and the audio signal that described single-chip microcomputer 2 transports is amplified, and multiplication factor is determined by described programme-controlled gain circuit.
Described programme-controlled gain circuit, program control variable connector 9 is set, the common port X of described program control variable connector 9 connects the input of described audio amplifier circuit 8, the port x 0 of described program control variable connector 9 connects the port x 1 of resistance R 1 and described program control variable connector 9 by resistance R 0, described resistance R 1 other end connects the port x 2 of resistance R 2 and described program control variable connector 9, described resistance R 2 other ends connect the port x 3 of resistance R 3 and described program control variable connector 9, described resistance R 3 other ends connect the port x 4 of resistance R 4 and described program control variable connector 9, described resistance R 4 other ends connect the port x 5 of resistance R 5 and described program control variable connector 9, described resistance R 5 other ends connect the port x 6 of resistance R 6 and described program control variable connector 9, described resistance R 6 other ends connect the port x 7 of resistance R 7 and described program control variable connector 9, described resistance R 7 other ends connect the output of described audio amplifier circuit 8, the control port A port of described program control variable connector 9, B port and C port are connected IO1 mouth, IO2 mouth and the IO3 mouth of described single-chip microcomputer 2 respectively.Described single-chip microcomputer 2 is by the IO1 mouth, and IO2 mouth and IO3 change the feedback loop of signal, thereby the multiplication factor of described program control audio amplifier circuit 5 is set.
Described background noise testing circuit 3, comprise that capacitor C 1 one ends connect described sound transducer 4, the other end connects resistance R 8, the in-phase input end of resistance R 9 and operational amplifier 7, described resistance R 8 other ends connect power supply VCC, described resistance R 9 other end ground connection, the inverting input of described operational amplifier 7 connects resistance R 10 and resistance R 11, described resistance R 10 other ends connect the output of described operational amplifier 7, described resistance R 11 other ends connect capacitor C 2, described capacitor C 2 other end ground connection, the output of described operational amplifier 7 connects the AD mouth of described single-chip microcomputer, and described single-chip microcomputer 2 obtains the ambient noise situation by the AD sampling.Described capacitor C 1 plays the partition direct current signal, the effect of logical AC signal, and described resistance R 8 and resistance R 9 are provided with bias voltage, and described resistance R 10, resistance R 11 and capacitor C 2 form negative feedback loop.
In sum, the audio signal that described single-chip microcomputer 2 is gathered described sound source 1, if signal amplitude is near zero, that is to say and do not have voice output, described single-chip microcomputer 2 is gathered the signal of described environment noise test circuit 3 outputs, if the noise signal amplitude is excessive, the multiplication factor that described single-chip microcomputer 2 is regulated described program control audio amplifier circuit 5.
Claims (6)
1. the acoustics volume controller of a band border noise feedback, comprise the sound source that voice signal is provided, the single-chip microcomputer of coordinating and controlling and the loudspeaker of output sound signal, it is characterized in that: also comprise the program control audio amplifier circuit that is connected with described single-chip microcomputer, described program control audio amplifier circuit output connects described loudspeaker, ambient noise signal is converted to the sound transducer of the signal of telecommunication, the environment noise test circuit that is connected with described sound transducer, described environment noise test circuit output connects described single-chip microcomputer.
2. the acoustics volume controller of a kind of band according to claim 1 border noise feedback, it is characterized in that: described background noise testing circuit, comprise that capacitor C 1 one ends connect described sound transducer, the other end connects resistance R 8, the in-phase input end of resistance R 9 and operational amplifier (7), described resistance R 8 other ends connect power supply VCC, described resistance R 9 other end ground connection, the inverting input of described operational amplifier (7) connects resistance R 10 and resistance R 11, described resistance R 10 other ends connect the output of described operational amplifier (7), described resistance R 11 other ends connect capacitor C 2, described capacitor C 2 other end ground connection, the output of described operational amplifier (7) connects the AD mouth of described single-chip microcomputer.
3. the acoustics volume controller of a kind of band according to claim 1 border noise feedback, it is characterized in that: described program control audio amplifier circuit comprises audio amplifier circuit (8) and programme-controlled gain circuit.
4. the acoustics volume controller of a kind of band according to claim 1 border noise feedback is characterized in that: described audio amplifier circuit (8), and input is set connects described single-chip microcomputer, output connects described loudspeaker.
5. the acoustics volume controller of a kind of band according to claim 1 border noise feedback, it is characterized in that: described programme-controlled gain circuit, program control variable connector (9) is set, the common port X of described program control variable connector (9) connects the input of described audio amplifier circuit (8), the port x 0 of described program control variable connector (9) connects the port x 1 of resistance R 1 and described program control variable connector (9) by resistance R 0, described resistance R 1 other end connects the port x 2 of resistance R 2 and described program control variable connector (9), described resistance R 2 other ends connect the port x 3 of resistance R 3 and described program control variable connector (9), described resistance R 3 other ends connect the port x 4 of resistance R 4 and described program control variable connector (9), described resistance R 4 other ends connect the port x 5 of resistance R 5 and described program control variable connector (9), described resistance R 5 other ends connect the port x 6 of resistance R 6 and described program control variable connector (9), described resistance R 6 other ends connect the port x 7 of resistance R 7 and described program control variable connector (9), described resistance R 7 other ends connect the output of described audio amplifier circuit (8), the control port A port of described program control variable connector (9), B port and C port are connected IO1 mouth, IO2 mouth and the IO3 mouth of described single-chip microcomputer respectively.
6. the acoustics volume controller of a kind of band according to claim 1 border noise feedback is characterized in that: described single-chip microcomputer is provided with the multiplication factor of described program control audio amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201733362U CN201499287U (en) | 2009-08-17 | 2009-08-17 | Sound equipment volume controller with environment noise feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201733362U CN201499287U (en) | 2009-08-17 | 2009-08-17 | Sound equipment volume controller with environment noise feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201499287U true CN201499287U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201733362U Expired - Fee Related CN201499287U (en) | 2009-08-17 | 2009-08-17 | Sound equipment volume controller with environment noise feedback |
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| Country | Link |
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| CN (1) | CN201499287U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056042A (en) * | 2010-12-31 | 2011-05-11 | 上海恒途信息科技有限公司 | Intelligent adjusting method and device for prompt tone of electronic device |
| CN102164015A (en) * | 2011-04-20 | 2011-08-24 | 铁道部运输局 | Method and device for detecting station broadcast system |
| CN112208686A (en) * | 2020-09-16 | 2021-01-12 | 纳恩博（天津）科技有限公司 | Data processing method and electric motorcycle |
-
2009
- 2009-08-17 CN CN2009201733362U patent/CN201499287U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056042A (en) * | 2010-12-31 | 2011-05-11 | 上海恒途信息科技有限公司 | Intelligent adjusting method and device for prompt tone of electronic device |
| CN102164015A (en) * | 2011-04-20 | 2011-08-24 | 铁道部运输局 | Method and device for detecting station broadcast system |
| CN112208686A (en) * | 2020-09-16 | 2021-01-12 | 纳恩博（天津）科技有限公司 | Data processing method and electric motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG SCI-TECH UNIVERSITY Free format text: FORMER OWNER: LIU YU Effective date: 20101110 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310012 5-2-302, LIDONGSHAN LANE, XIHU DISTRICT, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 310018 NO.5, NO.2 AVENUE, XIASHA HIGHER EDUCATION PARK, HANGZHOU CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101110 Address after: Hangzhou City, Zhejiang province 310018 Xiasha Higher Education Park No. 2 Street No. 5 Patentee after: Zhejiang Sci-Tech University Address before: 310012 5-2-302, Dongshan District, Hangzhou, Zhejiang, West Lake Patentee before: Liu Yu |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20100817 |