CN202551266U - Microphone structure capable of restraining feedback - Google Patents
Microphone structure capable of restraining feedback Download PDFInfo
- Publication number
- CN202551266U CN202551266U CN2012200329301U CN201220032930U CN202551266U CN 202551266 U CN202551266 U CN 202551266U CN 2012200329301 U CN2012200329301 U CN 2012200329301U CN 201220032930 U CN201220032930 U CN 201220032930U CN 202551266 U CN202551266 U CN 202551266U
- Authority
- CN
- China
- Prior art keywords
- film
- feedback
- microphone
- sound wave
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model discloses a microphone structure capable of restraining feedback. The microphone structure comprises a hollow tube body, wherein a sound conduction channel is formed in the upper end of the hollow tube body; a microphone module is arranged in the lower end of the tube body; a film is arranged at the top end of the tube body; and at least one kerf is formed on the film, so that the film is partitioned into two half films respectively. When a sound wave reach the film, the half films are used for generating two sound waves which are of same waveform, have halved amplitudes and have a certain time difference respectively, the two sound waves are resynthesized into one sound wave after passing through the sound conduction channel, and a tiny difference exists between the newly-synthesized sound wave and the sound wave generated by a sound source due to the time difference, so that the waveform accumulation difference is larger when a quantity of feedback times is larger, and the restraining effect on the generation of squeaking is more remarkable.
Description
Technical field
The utility model is relevant with a kind of microphone configurations, refers to a kind of microphone configurations that suppresses to feedback especially.
Background technology
When the radio reception of device use microphone, and see through audio frequency expansion instrument amplifying power, come out by loudspeaker plays sound wave 1 again; If microphone receives the sound wave that loud speaker discharges out repeatedly, this sound wave of frequency together just can be superposed to sound wave 2, is called the back coupling phenomenon of microphone; See also shown in Figure 1, for microphone is feedback the phenomenon sketch map, when feedback gain reaches certain limit; And when surpassing the loud speaker load; Just make loud speaker produce ear-piercing howling, and then produce the destruction of loud speaker, power amplifier, loud speaker is dialled the audio signals distortion of putting and is influenced problem such as activity atmosphere.
Be generally head it off, all be between adjustment microphone and loud speaker distance or in the audio frequency expansion instrument the extra electronic loop of setting up solve, as set up feedback suppressor or frequency shifter etc.; The principle of feedback suppressor is the too high crest that in audio signals, occurs; This crest is suppressed amplitude, reach the purpose that inhibition is uttered long and high-pitched sounds, the principle of frequency shifter is to arrive the critical point of uttering long and high-pitched sounds when loud speaker; Gain by this this audio frequency expansion instrument of frequency shifter reduction reaches the purpose that inhibition is uttered long and high-pitched sounds.
Use above-mentioned feedback suppressor or frequency shifter, still have the part defective to wait to improve, the inhibition of this feedback suppressor or the frequency shifter phenomenon of uttering long and high-pitched sounds; Be to change the amplitude of sound wave or the gain of audio frequency expansion instrument, can produce that acoustic pressure is subsided, problems such as depletion and audio distortions, and be mostly that the user denounces; And need the extra electronic loop that is provided with; Can improve manufacturing cost and reduce market competitiveness,, and necessity of improvement arranged so it is required to meet reality.
Summary of the invention
In view of this, the main purpose of the utility model is to provide a kind of microphone configurations that suppresses to feedback, and effectively suppresses to utter long and high-pitched sounds phenomenon, and the person easy to use operation of raising one's voice.
For achieving the above object, the technical scheme of the utility model is achieved in that
A kind of microphone configurations that suppresses to feedback consists predominantly of:
One microphone module;
One body, it passes through empty body for two ends, and this body upper end is provided with a leading note end; Form a leading note passage in this leading note end; And this body lower end is provided with a transaudient end, forms an accommodation space in this transaudient end, and this microphone module can supply to be arranged in this transaudient end in addition;
One film, this film are located at this body top, and this film is provided with a joint-cutting at least, make this film form 2 half films.
As preferred version, this slot length approximates the internal diameter of this body upper end.
As preferred version, this joint-cutting is located in the middle of this film.
As preferred version, this body is that empty round body is passed through at two ends.
As preferred version, this body is an elasticity body.
As preferred version, this film thickness is about 0.01mm to 0.1 mm.
The microphone configurations that suppresses to feedback that the utility model provided when sound wave arrives these half films, makes these half films independently produce vibration; And form different some wave sources respectively, make the some wave source of these half films produce respectively that waveform is identical, amplitude reduces by half, have two sound waves of a time difference, and through behind the leading note passage; Again synthesize a sound wave, but, make the new synthetic sound wave and the sound wave of source of sound generation that fine difference arranged because of having the relation of time difference; So what the utility model was provided suppresses to feedback and all can accumulate difference when microphone configurations is feedback at every turn, make same frequency sound wave Overlay descend, feedback number of times the more; Waveform accumulation difference is bigger; Suppress to produce and utter long and high-pitched sounds phenomenon more obviously, by this, effectively suppress to produce the phenomenon of uttering long and high-pitched sounds; And problems such as the acoustic pressure that can not cause existing feedback suppressor or frequency shifter to produce is subsided, depletion and audio distortions.
Description of drawings
Fig. 1 is the back coupling phenomenon sketch map of microphone.
Fig. 2 is the exploded perspective view of the utility model.
Fig. 3 is the combination stereogram of the utility model.
Fig. 4 is the AA direction cutaway view of Fig. 3.
Fig. 5 is the utility model vertical view.
Fig. 6 forms a wave source sketch map respectively for 2 half films of the utility model.
Fig. 7 is the sound wave of the source of sound generation of the utility model and the sonic waveforms figure that 2 half films produce respectively.
Fig. 8 is the synthetic new sound wave sketch mapes of the utility model two sound waves.
Fig. 9 is the oscillogram of the sound wave of newly synthetic sound wave of the utility model and source of sound generation.
Embodiment
Please consult Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5 simultaneously, be respectively exploded perspective view, this combination stereogram of the utility model, AA direction cutaway view and the vertical view of Fig. 3, it mainly is made up of a microphone module 10, a body 20 and 30 of films; Wherein:
This microphone module 10 is a prior art, does not give unnecessary details so do not intend.
This body 20; It is that two ends pass through empty circular bodys, and this body 20 can be the elasticity body, and these body 20 upper ends are provided with a leading note end 21; Be provided with a leading note passage 22 in this leading note end 21; Other and these body 20 lower ends form a transaudient end 23, form accommodation spaces 24 in this transaudient end 23, and this microphone module 10 can be arranged in this transaudient end 23.
This film 30; This film 30 is located at this body 20 tops, and is provided with a joint-cutting 31 at least in the middle of this film 30, makes this film 30 form 2 half films 32 respectively; In present embodiment; These joint-cutting 31 quantity are one, and these joint-cutting 31 length approximate the interior electrical path length of this leading note end 21, and these film 30 thickness are about 0.01mm to 0.1 mm.
By supply further to understand the utility model structural feature, application technology means and the effect reached of expection, now the utility model occupation mode is narrated, believing to have more deeply and concrete understanding the utility model therefrom, is described below:
Please consult Fig. 6 and shown in Figure 7 simultaneously, 2 half films that are respectively the utility model form the oscillogram of the sound wave and the sound wave that 2 half films produce respectively of a wave source sketch map and source of sound generation, the microphone configurations that suppresses to feedback that the utility model provided respectively; When the sound wave 100 of source of sound generation arrives these half films 32, these half films, 32 independent generations are vibrated, form different some wave sources respectively; Making the some wave source of these half films 32 produce respectively that waveform is identical, amplitude reduces by half, have the sound wave of time difference 200, please consult Fig. 8 and shown in Figure 9 more simultaneously, is the waveform comparison diagram of new synthetic sound wave and the sound wave of source of sound generation of the synthetic new sound wave sketch map of two sound waves and the utility model of the utility model; Two sound waves synthesize a sound wave 300, because have the relation of time difference 200 again through behind the leading note passage 22; Make new synthetic sound wave 300 fine difference arranged with the sound wave 100 that source of sound produces; Wherein, utter long and high-pitched sounds produce be the sound wave of same frequency because of after feedbacking, the sound wave that makes same waveform as is after repeatedly superposeing; Exceed loud speaker load and produce and utter long and high-pitched sounds; Review the microphone configurations that the utility model can suppress to feedback and when each the back coupling, all can accumulate difference, feedback more repeatedly, sonic waveforms difference is big more; Make same frequency sound wave Overlay descend, suppress to utter long and high-pitched sounds phenomenon more obviously.
It is said that the microphone configurations of the suppressed back coupling of the utility model is not limited to this execution mode; Also can be oval and square like this body; Also can be a reed like this film, also can be a glued membrane, also can suppress wind like this microphone configurations that can suppress to feedback and cut noises such as sound like this film.
The above is merely the preferred embodiment of the utility model, is not the protection range that is used to limit the utility model.
Claims (6)
1. the microphone configurations that can suppress to feedback is characterized in that, consists predominantly of:
One microphone module;
One body, it passes through empty body for two ends, and this body upper end is provided with a leading note end; Form a leading note passage in this leading note end; And this body lower end is provided with a transaudient end, forms an accommodation space in this transaudient end, and this microphone module can supply to be arranged in this transaudient end in addition;
One film, this film are located at this body top, and this film is provided with a joint-cutting at least, make this film form 2 half films.
2. the microphone configurations that suppresses to feedback according to claim 1 is characterized in that, this slot length approximates the internal diameter of this body upper end.
3. the microphone configurations that suppresses to feedback according to claim 1 is characterized in that this joint-cutting is located in the middle of this film.
4. the microphone configurations that suppresses to feedback according to claim 1 is characterized in that, this body is that empty round body is passed through at two ends.
5. the microphone configurations that suppresses to feedback according to claim 1 is characterized in that, this body is an elasticity body.
6. the microphone configurations that suppresses to feedback according to claim 1 is characterized in that this film thickness is about 0.01mm to 0.1 mm.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200329301U CN202551266U (en) | 2012-02-02 | 2012-02-02 | Microphone structure capable of restraining feedback |
| PCT/US2013/020591 WO2013106292A1 (en) | 2012-01-09 | 2013-01-07 | Microphone module with and method for feedback suppression |
| EP13736031.9A EP2803204B1 (en) | 2012-01-09 | 2013-01-07 | Microphone module with and method for feedback suppression |
| US14/371,351 US9344797B2 (en) | 2012-01-09 | 2013-01-07 | Microphone module with and method for feedback suppression |
| JP2014551403A JP6145459B2 (en) | 2012-01-09 | 2013-01-07 | Microphone module having feedback suppression and feedback suppression method |
| KR1020147020606A KR101947985B1 (en) | 2012-01-09 | 2013-01-07 | Microphone module with and method for feedback suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200329301U CN202551266U (en) | 2012-02-02 | 2012-02-02 | Microphone structure capable of restraining feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202551266U true CN202551266U (en) | 2012-11-21 |
Family
ID=47171822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200329301U Expired - Fee Related CN202551266U (en) | 2012-01-09 | 2012-02-02 | Microphone structure capable of restraining feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202551266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248972A (en) * | 2012-02-01 | 2013-08-14 | 彭彦儒 | Microphone structure capable of restraining feedback |
-
2012
- 2012-02-02 CN CN2012200329301U patent/CN202551266U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248972A (en) * | 2012-02-01 | 2013-08-14 | 彭彦儒 | Microphone structure capable of restraining feedback |
| CN103248972B (en) * | 2012-02-01 | 2016-08-24 | 彭彦儒 | The microphone configurations feedback can be suppressed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9467784B2 (en) | Piezoelectric-type speaker | |
| CN101400007A (en) | Active noise eliminating earphone and noise eliminating method thereof | |
| CN104967958A (en) | Piezoelectric loudspeaker with high tone quality | |
| US20150055818A1 (en) | Speaker structure | |
| FI94203C (en) | Speaker | |
| CN110536217B (en) | Loudspeaker | |
| TW564655B (en) | Flat panel sound radiator with enhanced audio performance | |
| CN201839397U (en) | Sound box | |
| CN202551266U (en) | Microphone structure capable of restraining feedback | |
| CN103248972B (en) | The microphone configurations feedback can be suppressed | |
| CN110366075B (en) | Loudspeaker | |
| CN203136150U (en) | Integrated minisize noise reduction speaker | |
| CN115396791A (en) | Circuit and sound production device | |
| CN209930504U (en) | Annular dust collector for loudspeaker outer diaphragm | |
| CN106375908A (en) | Method for synthesizing ultrasonic wave into audible sound and controlling range of audible space | |
| KR101583650B1 (en) | nonflammables speaker of piezo electricity type | |
| CN205847590U (en) | A kind of single magnetic coaxial horn structure | |
| CN202425025U (en) | New type voice coil | |
| CN203072149U (en) | Coaxial double-frequency loudspeaker | |
| KR20160095601A (en) | PZT ceramic speaker | |
| CN110896514A (en) | Noise reduction earphone | |
| CN101094538B (en) | Device of improving external playback effect, its external means and playback terminal | |
| CN204010661U (en) | A kind of qin acoustic pickup | |
| CN101516052B (en) | Loudspeaker | |
| CN202889619U (en) | Piezoelectric ceramic flat plate vibration loudspeaker oscillator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20170202 |