CN113660595B - Method for detecting proper earcaps and eliminating howling by earphone - Google Patents
Method for detecting proper earcaps and eliminating howling by earphone Download PDFInfo
- Publication number
- CN113660595B CN113660595B CN202111126839.6A CN202111126839A CN113660595B CN 113660595 B CN113660595 B CN 113660595B CN 202111126839 A CN202111126839 A CN 202111126839A CN 113660595 B CN113660595 B CN 113660595B
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- earphone
- earcap
- control unit
- loudspeaker
- earcaps
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
Classifications
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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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/30—Monitoring or testing of hearing aids, e.g. functioning, settings, battery power
- H04R25/305—Self-monitoring or self-testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/48—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using constructional means for obtaining a desired frequency response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
- H04R25/652—Ear tips; Ear moulds
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Neurosurgery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention relates to the technical field of earphones, in particular to a method for detecting proper earcaps and eliminating howling by using earphones, which comprises the following steps: s1, a microphone is assembled in an earphone, the microphone is arranged at the front end of a loudspeaker, and a selected earcap is arranged on the earphone and worn in the ear; s2, the loudspeaker sends out a test signal, the microphone receives the test signal sent by the loudspeaker and feeds back the test signal to the control unit for electric signal analysis, and the control unit compares the electric signal with built-in artificial ear test data.
Description
Technical Field
The invention relates to the technical field of earphones, in particular to a method for detecting proper earcaps and eliminating howling by using the earphones.
Background
A problem with hearing-aid headphones currently on the market is howling, which is mainly due to amplification of signals and positive feedback caused by cavity resonance formed after the ear wears the headphones. The hearing aid earphone is used for recording external sound (such as a talking object and the like) through an external microphone, amplifying the external sound and playing the amplified sound to the ears of a wearer through an earphone loudspeaker. The signal amplification of headphones worn by a normal person is about 15DB, while the amplification of a hearing aid headphone is typically about 30 DB. After the earphone is worn, a resonance cavity is formed between the earphone and the eardrum, the resonance cavity has a resonance point, the frequency of the resonance point can cause resonance, and the resonance point can be amplified by more than 5 DB. Howling of the hearing aid is unavoidable. It is common practice in the market at present to estimate the frequency points of howling that may occur and reduce the gain of the frequency of this part by 10-20 DB. However, this method has two disadvantages, namely that the frequency of the resonance point of the resonance cavity is greatly different due to the fact that the ears of each person are different, so that the preset frequency must have a large width, the frequency range is approximately 1500-3500 HZ (equal to 0.8 octaves), the frequency is an important area of human voice, and the quality of the voice is greatly affected after the gain is reduced; secondly, the preset gain reduction may be insufficient due to individual differences, i.e. howling may still occur-even if it is relatively slight.
The hearing-aid earphone has the howling problem, and the selection of the earcaps is an important step, but in practice, many people do not know which of the earcaps with various specifications provided by manufacturers is suitable for the user, because the user does not know what the real low-frequency music shows, or what the best noise reduction effect and howling elimination effect can be achieved by the earphone.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a method for detecting a proper earcap and eliminating howling by using an earphone.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A method for designing an earphone to detect a proper earcap and eliminate howling, comprising:
S1, a microphone is assembled in an earphone, the microphone is arranged at the front end of a loudspeaker, and a selected earcap is arranged on the earphone and worn in the ear;
s2, the loudspeaker sends out a test signal, the microphone receives the test signal sent by the loudspeaker and feeds back the test signal to the control unit for electric signal analysis, the control unit compares the electric signal with built-in artificial ear test data, and whether the current earcap is suitable or not is judged according to the descending amplitude of the frequency response of the low-frequency part until the conforming earcap is detected;
S3, selecting and installing the matched earcaps, wearing the earcaps, sending out test signals again by the loudspeaker, simultaneously receiving the test signals sent by the loudspeaker by the microphone, feeding back the test signals to the control unit for electric signal analysis, comparing the test data of the artificial ear built in the control unit, analyzing frequency points and gain amplitude which are used for self-feedback to cause howling, and reducing corresponding gain aiming at the frequency points to eliminate the howling.
Preferably, the step S2 further includes: when detecting the earcap that accords with, the control unit controls loudspeaker sound production, reminds the user that the current earcap fitness is high.
Preferably, the step S1 and the step S3 further include in-ear detection, a detection unit is assembled in the earphone, when the earphone is worn, the detection unit emits light signals, and the control unit determines whether the ear cap is in the ear by comparing the intensities of the emitted signals and the reflected signals of the detection unit.
Preferably, when the earphone is detected to be in the ear, the ear cap is judged to be in the ear, and the control unit controls the loudspeaker to send out a test signal.
Preferably, the earphone is an in-ear earphone, and the earcap is a silica gel cap.
Preferably, the test signal sent by the loudspeaker is a sweep frequency signal, white noise, pink noise or pulse signal.
Preferably, the control unit is internally provided with a wireless connection unit, and the control unit is in wireless connection with an external terminal through the wireless connection unit.
Preferably, the wireless connection unit is a WIFI unit or a bluetooth unit.
Preferably, the external terminal comprises a mobile phone, a computer or a tablet.
The method for detecting the proper earcaps and eliminating the howling by the earphone has the beneficial effects that: the invention has convenient use, improves the sense of embodiment of the user, does not need to additionally increase any material and assembly cost, and tells the user which is proper through voice after wearing all earcaps once after purchasing a new hearing aid earphone;
after selecting a proper earcap, the control unit adaptively determines the frequency point of howling, the bandwidth of actually generating howling is very narrow, generally less than one tenth octave, and as long as the gain of the bandwidth less than one eighth octave is reduced, the human ear hardly senses the change of sound, thereby solving the influence of the fixed bandwidth on the sound quality, and secondly, the gain required to be reduced is also adaptive, so that the situation that the fixed gain is possibly insufficient to continue howling and the influence of excessive reduction on the sound quality is even slight can be avoided, thereby achieving the optimal listening experience.
Drawings
FIG. 1 is a graph of artificial ear test data in accordance with the present invention;
FIG. 2 is a graph of data when the earcap is smaller or larger;
FIG. 3 is a data comparison chart of FIG. 1 and FIG. 2;
Fig. 4 is a normal spectrum diagram without howling;
fig. 5 is a spectrum diagram of the detection of howling;
Fig. 6 is a spectrum diagram after howling suppression.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
A method for an earphone to detect a suitable earcap and to eliminate howling, comprising:
S1, a microphone is assembled in an earphone, the microphone is arranged at the front end of a loudspeaker, and a selected earcap is arranged on the earphone and worn in the ear;
S2, the loudspeaker sends out a test signal, the microphone receives the test signal sent by the loudspeaker and feeds back the test signal to the control unit for electric signal analysis, the control unit compares the electric signal with built-in artificial ear test data, judges whether the current earcap is suitable according to the descending amplitude of the frequency response of the low-frequency part until the conforming earcap is detected, and the method further comprises the following steps: when the conforming earcaps are detected, the control unit controls the loudspeaker to sound, and the user is reminded that the current earcaps are high in fitness;
S3, selecting and installing the matched earcaps, wearing the earcaps, sending out test signals again by the loudspeaker, receiving the test signals sent by the loudspeaker by the microphone, feeding back the test signals to the control unit for electric signal analysis, comparing the test data of the artificial ear built in the control unit, analyzing frequency points (narrow bandwidth) and gain amplitude which are used for leading to howling by self-feedback, and reducing corresponding gain aiming at the frequency points to eliminate the howling.
S1 and S3 also comprise in-ear detection, a detection unit is assembled in the earphone, when the earphone is worn, the detection unit emits light signals, and the control unit judges whether the earcap is in the ear or not by comparing the intensity of the emitted signals and the reflected signals of the detection unit.
Wherein the earphone is an in-ear earphone, the earcap can be a silica gel cap, the test signal sent by the loudspeaker is a sweep frequency signal, white noise, pink noise or pulse signal,
The control unit is internally provided with a wireless connection unit, the control unit is in wireless connection with an external terminal through the wireless connection unit, the wireless connection unit is a WIFI unit or a Bluetooth unit, and the external terminal comprises a mobile phone, a computer or a tablet.
1-3, FIG. 1 is a graph of artificial ear test data, FIG. 2 is a graph of data when the earcap is smaller or larger, and FIG. 3 is a comparison of two sets of data, and it is obvious from the comparison that when the earcap is smaller or larger, the earcap is not well matched with the ear, so that leakage short circuit of a low-frequency part is caused, and the sensitivity of the low frequency is obviously reduced.
Referring to fig. 4 to 6, fig. 4 is a normal spectrum diagram without howling, fig. 5 is a spectrum diagram with howling detected (with a distinct peak around 2.5 KHZ), and fig. 6 is a spectrum diagram after howling is suppressed, it is seen that the peak at 2.5KHZ is disappeared, and the gain of other frequencies is hardly changed compared with the above spectrum diagram, thereby playing a role of eliminating howling.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. A method for detecting a proper earcap for removing howling by an earphone, comprising:
S1, a microphone is assembled in an earphone, the microphone is arranged at the sound producing end of a loudspeaker, and a selected earcap is arranged on the earphone and worn in the ear;
S2, the loudspeaker sends out a sweep frequency signal, the microphone receives the sweep frequency signal sent by the loudspeaker and feeds back to the control unit for electric signal analysis, the control unit compares the electric signal with built-in artificial ear test data, judges whether the current earcap is suitable according to the descending amplitude of the frequency response of the low-frequency part until the conforming earcap is detected, and when the conforming earcap is detected, the control unit controls the loudspeaker to sound so as to remind a user that the suitability of the current earcap is high;
S3, selecting and installing the matched earcaps, wearing the earcaps, sending out sweep signals again by the loudspeaker, receiving the sweep signals sent by the loudspeaker by the microphone, feeding back the sweep signals to the control unit for electric signal analysis, comparing the resonance frequency and the gain amplitude of the resonance at the analysis position by artificial ear test data built in the control unit, reducing corresponding gain to the frequency point, eliminating howling, detecting in the ear, installing a detection unit in the earphone, and judging whether the earcaps are in the ear or not by comparing the intensity of the emitted signals and the reflected signals of the detection unit by the control unit when the earphone is worn.
2. A method for detecting proper earcaps for howling cancellation in an earphone as claimed in claim 1, wherein: when the reflected signal intensity is larger than the transmitted signal intensity, the earcap is judged to be in the ear, and the control unit controls the loudspeaker to send out a sweep frequency signal.
3.A method for detecting proper earcaps for howling cancellation in an earphone as claimed in claim 1, wherein: the earphone is an in-ear earphone, and the earcap is a silica gel cap.
4. A method for detecting proper earcaps for howling cancellation in an earphone as claimed in claim 1, wherein: the sweep frequency signal sent by the loudspeaker is pink noise or white noise.
5. A method for detecting proper earcaps for howling cancellation in an earphone as claimed in claim 1, wherein: the control unit is internally provided with a wireless connection unit, and the control unit is in wireless connection with an external terminal through the wireless connection unit.
6. A method for detecting proper earcap for howling cancellation in an earphone as recited in claim 5, wherein: the wireless connection unit is a WIFI unit or a Bluetooth unit.
7. A method for detecting proper earcap for howling cancellation in an earphone as recited in claim 5, wherein: the external terminal comprises a mobile phone, a computer or a tablet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126839.6A CN113660595B (en) | 2021-09-19 | 2021-09-19 | Method for detecting proper earcaps and eliminating howling by earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126839.6A CN113660595B (en) | 2021-09-19 | 2021-09-19 | Method for detecting proper earcaps and eliminating howling by earphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113660595A CN113660595A (en) | 2021-11-16 |
| CN113660595B true CN113660595B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111126839.6A Active CN113660595B (en) | 2021-09-19 | 2021-09-19 | Method for detecting proper earcaps and eliminating howling by earphone |
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| CN (1) | CN113660595B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110166919A (en) * | 2019-05-05 | 2019-08-23 | 常德沁音科技有限公司 | A kind of hearing aid enters ear detection method and hearing aid |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120057714A1 (en) * | 2010-09-02 | 2012-03-08 | You-Ruei Lin | Automatic Tunable Earphone And Method For Tuning The Same |
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2021
- 2021-09-19 CN CN202111126839.6A patent/CN113660595B/en active Active
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| CN110166919A (en) * | 2019-05-05 | 2019-08-23 | 常德沁音科技有限公司 | A kind of hearing aid enters ear detection method and hearing aid |
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| CN211959496U (en) * | 2020-06-05 | 2020-11-17 | 东莞市库珀电子有限公司 | Intelligent wireless Bluetooth headset with function of detecting in ear |
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| Title |
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| Publication number | Publication date |
|---|---|
| CN113660595A (en) | 2021-11-16 |
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