CN105681991A - Inaudible sound wave based wireless microphone signal transmission method and system - Google Patents
Inaudible sound wave based wireless microphone signal transmission method and system Download PDFInfo
- Publication number
- CN105681991A CN105681991A CN201610008743.2A CN201610008743A CN105681991A CN 105681991 A CN105681991 A CN 105681991A CN 201610008743 A CN201610008743 A CN 201610008743A CN 105681991 A CN105681991 A CN 105681991A
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- signal
- sound wave
- heard sound
- sound ripple
- wireless microphone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
Abstract
The invention discloses an inaudible sound wave based wireless microphone signal transmission method and system. The inaudible sound wave based wireless microphone signal transmission method comprises the steps of, by a microphone host, generating a sound wave signal which cannot be heard by a human ear; by a pick-up head of the wireless microphone, picking up the inaudible sound wave signal which is output from a loudspeaker to space and carrying out response processing; and further transmitting the inaudible sound wave signal along with an audio signal of the microphone to the microphone host so as to finish a transmission loop. The inaudible sound wave based wireless microphone signal transmission system comprises a microphone host and a wireless microphone; the microphone host is provided with an inaudible sound wave output module, an inaudible sound wave reception module, a main control module, a power amplifier and the loudspeaker. According to the inaudible sound wave based wireless microphone signal transmission method and system, as the sound wave which cannot be identified by the human ear is utilized as a transmission signal from the host to the microphone, the distance between the loudspeaker and the pick-up head of the microphone and a sound wave transmission coefficient can be measured while the transmission signal forms a closed signal path. Therefore, a few of new beneficial functions can be realized, and use performances of wireless microphone products can be improved obviously.
Description
Technical field
The present invention relates to a kind of wireless microphone signals transmission method based on not heard sound ripple and system.
Background technology
Wireless microphone is wirelessly transferred for audio signal, and have a wide range of applications occasion, for instance various performances, meeting, amusement etc. Traditional wireless microphone adopts infrared ray or wireless data transmission module and main frame to carry out signal transmission control mostly. The directivity of infrared transmission is extremely strong, it is impossible to transmit signal sustainedly and stably; Wireless data transmission module volume is big, increases cost many; And the mode of existing infrared ray or wireless data transmission module, all cannot the perception sound wave carry-over factor when space propagation and propagation time, thus the function such as chauvent's criterion, automatic transmitting power control cannot be realized.
Summary of the invention
For overcoming the deficiencies in the prior art, it is an object of the invention to provide a kind of wireless microphone signals transmission method based on not heard sound ripple and system, the New function such as adaptive howling suppression, automatic transmitting power control can be realized, hence it is evident that promote the serviceability of wireless microphone.
The present invention solves that its technical problem the technical scheme is that
A kind of wireless microphone signals transmission method based on not heard sound ripple, including:
The inaudible acoustic signals of human ear is produced by mike main frame, this not heard sound ripple signal through the outfan of mike main frame, export together with the audio signal of main frame, then through power amplifier, by speaker while reduction audio signal, will not export to space by heard sound ripple signal;
The pick-up head pickup speaker output of wireless microphone, to the not heard sound ripple signal in space, therefrom demodulates required control signal or status information, to realize the function of control or display; And status information or the control instruction of mike are modulated in the radiofrequency signal of mike, it is transferred to mike main frame, then decodes in mike main frame, complete transmission loop, it is achieved various functions.
Further, the frequency of described not heard sound ripple signal should be lower than 20Hz or higher than 20kHz.
Another aspect of the present invention additionally provides a kind of wireless microphone signals based on not heard sound ripple and transmits system, including mike main frame, described mike main frame be provided with not heard sound ripple output module, not heard sound ripple receiver module, main control module, power amplifier, speaker, described not heard sound ripple receiver module is connected with the input of main control module, the outfan of described main control module is connected with not heard sound ripple output module, described not heard sound ripple output module is connected with the input of power amplifier, and the outfan of described power amplifier is connected with speaker.
Further, the frequency of sound wave of described not heard sound ripple output module output is lower than 20Hz or higher than 20kHz.
The invention has the beneficial effects as follows: a kind of wireless microphone signals transmission method based on not heard sound ripple of present invention employing and system, the sound wave that human ear not can recognise that is utilized to transmit signal between mike main frame and mike, form the closure signal transmission loop from mike main frame to wireless microphone, again from wireless microphone to mike main frame, such that it is able to realize some New function, for instance transmission power adjustment automatically; And this signal path from mike main frame to mike, due to by means of not heard sound ripple in the transmission in space, thus the distance between speaker and microphone cartridge and acoustic transmissivity can be measured, such that it is able to realize some New function, for instance adaptive howling suppression.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the invention will be further described.
Fig. 1 is the wireless microphone signals transmission method schematic diagram based on not heard sound ripple of the present invention;
Fig. 2 is the structural representation of the wireless microphone signals transmission system based on not heard sound ripple of the present invention.
Detailed description of the invention
With reference to Fig. 1, a kind of wireless microphone signals transmission method based on not heard sound ripple of the present invention, including: produce the inaudible acoustic signals of human ear by mike main frame, this not heard sound ripple signal through the outfan of mike main frame, export together with the audio signal of main frame, then through power amplifier, by speaker while reduction audio signal, will not export to space by heard sound ripple signal; The pick-up head pickup speaker of wireless microphone exports the not heard sound ripple signal to space, the pick-up head pickup speaker of wireless microphone exports the not heard sound ripple signal to space, therefrom demodulate required control signal or status information, to realize the function of control or display; And status information or the control instruction of mike are modulated in the radiofrequency signal of mike, it is transferred to mike main frame, then decodes in mike main frame, complete transmission loop, it is achieved various functions.
Owing to the discernible acoustic signals frequency range of human ear is 20Hz 20kHz, therefore in the present invention, the frequency of described not heard sound ripple signal should be lower than 20Hz or higher than 20kHz.
With reference to Fig. 2, another aspect of the present invention additionally provides should transmit system by wireless microphone signals in aforementioned manners, including mike main frame, described mike main frame is provided with not heard sound ripple output module, not heard sound ripple receiver module, main control module, power amplifier, speaker, described not heard sound ripple receiver module is connected with the input of main control module, the outfan of described main control module is connected with not heard sound ripple output module, described not heard sound ripple output module is connected with the input of power amplifier, the outfan of described power amplifier is connected with speaker.Described not heard sound ripple output module is used for output frequency lower than 20Hz or the sound wave higher than 20kHz, described not heard sound ripple receiver module is for receiving the not heard sound ripple signal that wireless microphone returns.
The present invention utilizes the sound wave that human ear not can recognise that to transmit signal between mike main frame and mike, form the closure signal transmission loop from mike main frame to wireless microphone, again from wireless microphone to mike main frame, such that it is able to realize some New function, for instance transmission power adjustment automatically; And this signal path from mike main frame to mike, due to by means of not heard sound ripple in the transmission in space, thus the distance between speaker and microphone cartridge and acoustic transmissivity can be measured, such that it is able to realize some New function, for instance adaptive howling suppression.
The above, simply presently preferred embodiments of the present invention, the invention is not limited in above-mentioned embodiment, as long as it reaches the technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (4)
1. the wireless microphone signals transmission method based on not heard sound ripple, it is characterised in that including:
The inaudible acoustic signals of human ear is produced by mike main frame, and control signal or status information are modulated at not on heard sound ripple, this not heard sound ripple signal through the outfan of mike main frame, export together with the audio signal of main frame, then through power amplifier, by speaker while reduction audio signal, will not export to space by heard sound ripple signal;
The pick-up head pickup speaker output of wireless microphone, to the not heard sound ripple signal in space, therefrom demodulates required control signal or status information, to realize the function of control or display; And status information or the control instruction of mike are modulated in the radiofrequency signal of mike, it is transferred to mike main frame, then decodes in mike main frame, complete transmission loop, it is achieved various functions.
2. a kind of wireless microphone signals transmission method based on not heard sound ripple according to claim 1, it is characterised in that: the frequency of described not heard sound ripple signal should be lower than 20Hz or higher than 20kHz.
3. the wireless microphone signals based on not heard sound ripple transmits system, including mike main frame, it is characterized in that: described mike main frame be provided with not heard sound ripple output module, not heard sound ripple receiver module, main control module, power amplifier, speaker, described not heard sound ripple receiver module is connected with the input of main control module, the outfan of described main control module is connected with not heard sound ripple output module, described not heard sound ripple output module is connected with the input of power amplifier, and the outfan of described power amplifier is connected with speaker.
4. a kind of wireless microphone signals based on not heard sound ripple according to claim 3 transmits system, it is characterised in that: the frequency of sound wave of described not heard sound ripple output module output is lower than 20Hz or higher than 20kHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610008743.2A CN105681991A (en) | 2016-01-04 | 2016-01-04 | Inaudible sound wave based wireless microphone signal transmission method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610008743.2A CN105681991A (en) | 2016-01-04 | 2016-01-04 | Inaudible sound wave based wireless microphone signal transmission method and system |
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| CN105681991A true CN105681991A (en) | 2016-06-15 |
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| CN201610008743.2A Pending CN105681991A (en) | 2016-01-04 | 2016-01-04 | Inaudible sound wave based wireless microphone signal transmission method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112889297A (en) * | 2018-08-20 | 2021-06-01 | 思睿逻辑国际半导体有限公司 | Auricle proximity detection |
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| JP2010207555A (en) * | 2009-03-09 | 2010-09-24 | Toytec:Kk | Toy with ultrasound image-linking system |
| CN102348014A (en) * | 2010-07-22 | 2012-02-08 | 三星电子株式会社 | Apparatus and method for providing augmented reality service using sound |
| CN104869502A (en) * | 2015-03-19 | 2015-08-26 | 络达科技股份有限公司 | Sound effect gain method |
| WO2015163031A1 (en) * | 2014-04-23 | 2015-10-29 | ソニー株式会社 | Information processing device, information processing method, and program |
| US20150365384A1 (en) * | 2014-06-16 | 2015-12-17 | Wul4 | System and Methods for Transmitting Information Using Inaudible Acoustic Signals |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1091558A (en) * | 1992-12-05 | 1994-08-31 | 德国汤姆森-勃朗特有限公司 | The compatible transmission of auxiliary signal and/or the method for storage and decoding |
| JP2010207555A (en) * | 2009-03-09 | 2010-09-24 | Toytec:Kk | Toy with ultrasound image-linking system |
| CN102348014A (en) * | 2010-07-22 | 2012-02-08 | 三星电子株式会社 | Apparatus and method for providing augmented reality service using sound |
| WO2015163031A1 (en) * | 2014-04-23 | 2015-10-29 | ソニー株式会社 | Information processing device, information processing method, and program |
| US20150365384A1 (en) * | 2014-06-16 | 2015-12-17 | Wul4 | System and Methods for Transmitting Information Using Inaudible Acoustic Signals |
| CN104869502A (en) * | 2015-03-19 | 2015-08-26 | 络达科技股份有限公司 | Sound effect gain method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112889297A (en) * | 2018-08-20 | 2021-06-01 | 思睿逻辑国际半导体有限公司 | Auricle proximity detection |
| CN112889297B (en) * | 2018-08-20 | 2022-09-13 | 思睿逻辑国际半导体有限公司 | Auricle proximity detection |
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Application publication date: 20160615 |