CN1756444A - Self detection and correction method for electroacoustic system - Google Patents
Self detection and correction method for electroacoustic system Download PDFInfo
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- CN1756444A CN1756444A CN 200410085723 CN200410085723A CN1756444A CN 1756444 A CN1756444 A CN 1756444A CN 200410085723 CN200410085723 CN 200410085723 CN 200410085723 A CN200410085723 A CN 200410085723A CN 1756444 A CN1756444 A CN 1756444A
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Abstract
The invention provides a self detection adjustment method for electro acoustic system fit to any situation. Wherein, a self detection module build-in IC or DSP sends testing signal to be treated by a circuit element and transmitted by a audio sending device; at least one audio receiver takes over and sends the signal to connected circuit element for conversion into digital signal, then send back to self detection module for comparing the correlativity between send testing signal and back digital signal and optimizing the circuit parameter; then comes the next detection and adjustment for next parameter; if can not adjust, it sends testing failure alarm.
Description
Technical field
The present invention is the self detection and correction method of relevant a kind of electroacoustics system, is meant especially a kind ofly can carry out oneself to electroacoustics system in any occasion and detect also self-adjusting method.
Background technology
Along with development in science and technology and universal, communication apparatus such as phone etc. be every household indispensability, because its event at a low price, if fault is arranged all is directly to eliminate to change mostly, if but as conference telephone etc. at high price product have when inscribing between bad or noise of reception etc., maintenance cost costliness not only, maintenance package is also wanted more than ten thousand yuan, though send repair or voluntarily maintenance all spend not for a short time, allow the big sense of user be unable to stand.
In the prior art, these communication apparatus must be when semi-finished product, promptly just internal circuit is tested before the assembling, test is assembled into finished product after finishing again, yet, after the bad or situations such as interference, system's instability of signal occur in assembling sometimes or use a period of time, this moment is if desire detects finished product, expensive external checkout equipment need be arranged, could detect its internal circuit, cause cost waste otherwise just finished product must be taken apart.
Moreover, if the mortality of a collection of finished product when sampling observation is too high, then must with this by the gross finished product carry out complete detection, promptly need use expensive detection equipment or finished product is taken apart to detect internal circuit, consuming timely under these a large amount of situations about detecting take a lot of work again, may cause the delay of production line, increase production cost.Therefore, the present invention promptly proposes a kind of self detection and correction method of electroacoustics system at above-mentioned several points, effectively to overcome these above-mentioned topics.
Summary of the invention
Main purpose of the present invention provides a kind of self detection and correction method of electroacoustics system, it is to set up an oneself to detect module, the producer or user can be detected this electroacoustics system voluntarily, checkout equipment that must be external not is convenient on production line or the medium any occasion of family is carried out oneself detection.
Another object of the present invention provides a kind of self detection and correction method of electroacoustics system, and it can detect this electroacoustics system voluntarily, does not need finished product taken apart to detect its internal circuit, can significantly reduce production costs.
A further object of the present invention provides a kind of self detection and correction method of electroacoustics system, and stability and performance that it can promote electroacoustics system prolong the life-span of this electroacoustics system.
In order to achieve the above object, be to set up an oneself to detect module on one digital signal processor of electroacoustics system, utilize this oneself to detect module and send a test signal, through behind this signal of a circuit element processes by the sound dispensing device signal of sounding, after at least one sound receiver receives this voice signal, pass through this signal of another circuit element processes again, and convert to and pass this oneself back after the digital signal and detect module, relatively this sends signal and this passes correlation between signals back to detect module by this oneself; Whether each circuit element all is provided with a parameter value, detect the signal correlation comparative result decision of module according to this oneself and this parameter value is adjusted, and compare the consistency of this parameter value, and the test and the adjustment of the next item down parameter carried out in the recirculation that continues; Therefore, this electroacoustics system can be utilized built-in oneself to detect module to carry out that the oneself detects and proofread and correct, though on production line or family detect all very convenient.
A kind of self detection and correction method of electroacoustics system is may further comprise the steps:
One oneself detects module and sends a test signal, and this test signal reaches a sound dispensing device after through one first circuit element processes and sends a voice signal;
At least one sound receiver receives this voice signal, after at least one second circuit element treatment conversion is a digital signal, passes this digital signal back this oneself and detects module, relatively the linear differences between this test signal and this digital signal; And
Determine the whether needs adjustment of parameter value of this first and second circuit element according to the result of this comparison, and with its optimization.
The self detection and correction method of described electroacoustics system, wherein, this oneself detects module and is built in an integrated circuit or the digital signal processor in being.
The self detection and correction method of described electroacoustics system, wherein, the parameter of this circuit element is to comprise gain (Gain), sensitivity (Sensivity), phase delay (Phase delay) and frequency response (Frequency response).
The self detection and correction method of described electroacoustics system, wherein, this sound issue device is a player, this sound receiver is a microphone, and be to comprise digital signal being converted to anaiog signal or anaiog signal is converted to digital signal a codec (CODEC) in this first and second circuit element.
The self detection and correction method of described electroacoustics system wherein, when the linear differences between this test signal and this digital signal surpasses default scope, need be adjusted the parameter value of this first and second circuit element.
The self detection and correction method of described electroacoustics system, wherein, adjust the step of the parameter of this first circuit element, be to set up a default median of this second circuit component parameters and the maximum of this first circuit element parameter earlier, this oneself detects module and sends a test signal again, and this maximum is reduced gradually with a control signal, till this oneself detected enough height of linearity between this test signal of module and digital signal that this is passed back, the numerical value of this moment was the optimum parameter value of this first circuit element; And after the parameter value of this first circuit element of decision, set up the maximum of this second circuit component parameters earlier, detect module by this oneself again and send a test signal, and send a control signal this maximum is reduced gradually, till the enough height of the linearity between this test signal and this digital signal of passing back, the numerical value of this moment is the optimum parameter value of this second circuit element.
The self detection and correction method of described electroacoustics system, wherein, when there is any one when overload in the loop between this first and second circuit element, then this first or the setting of second circuit element make whole circuit produce non-linear relation.
The self detection and correction method of described electroacoustics system, wherein, when this project of desiring test parameter was plural number, it was to send different test signals to come Automatic Cycle to test that this oneself detects module; If this selftest module can't be with the parameter adjustment of this first and second circuit element during to optimization, it is to send an alert news to notify user or testing staff.
The self detection and correction method of described electroacoustics system wherein, when this sound receiver and this second circuit element are plural number, is heavily to be covered with to state step and obtain this second circuit element parameter value separately, relatively its consistency and with its optimization.
The self detection and correction method of described electroacoustics system, wherein, when the interelement digital signal of passing back of this plural number second circuit does not reach consistency, parameter value that then should plural number second circuit element is set and is not reached optimization, should further proofread and correct otherness therebetween; Still can't reaching an agreement property if repetitiousness is adjusted parameter value, then should plural number second circuit interelement otherness excessive, send an alert news to notify user or testing staff.
Below by illustrating in detail, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and is reached by specific embodiment.
Description of drawings
Fig. 1 carries out the block schematic diagram that electroacoustics system detects the gain parameter method for the present invention utilizes an oneself to detect module;
Fig. 2 detects the block schematic diagram of gain parameter for the present invention in to plural microphone system at a loud speaker.
Embodiment
The invention provides a kind of self detection and correction method of electroacoustics system, wherein, this electroacoustics system can be divided into as shown in Figure 1 a loud speaker to the system one to one of a microphone, with as shown in Figure 2 the loud speaker one-to-many system to plural microphone.In system one to one, this oneself detects module 10 detectable parameter projects and comprises gain (Gain), sensitivity (Sensmvity), phase delay (Phasedelay) and frequency response (Frequency response); In the one-to-many system, this oneself detects module 10 detectable parameter projects and comprises gain inequality (Gain difference), poor sensitivity (Sensitivity difference), phase-delay difference (Phase delay difference) and frequency response poor (Frequency response difference); The detection of gain parameter can keep programmable gain amplify between the linear relationship of circuit, and determine its parameter value all in correct scope, the detection of frequency response then can control loudspeaker, the stability of microphone and circuit.Below be that the embodiment that detects gain parameter for desire in system and the one-to-many system one to one respectively illustrates this method.
In the one to one electroacoustics system of a loud speaker to a microphone, as shown in Figure 1, a built-in oneself detects module 10 in digital signal processor or integrated circuit, this oneself detects test signal to one first circuit element that module 10 sends a detection gain parameter, by first programmable gain amplifier 18 (the ProgrammableGain Amplifier in first codec 12 (CODEC) of this first circuit element, be called for short PGA) this test signal is handled, this first codec 12 more can convert this test signal to anaiog signal, and compare signal for convenience, more signal can be reached an amplifier 14 amplifies, afterwards by a sound dispensing device, it is loud speaker 16 signal of sounding, this voice signal is by a sound receiver, and promptly microphone 20 receives; After the anaiog signal of this sound is received by microphone 20, reach a second circuit element through another amplifier 22 amplifications, by second codec 24 that comprises one second programmable gain amplifier 26 in the second circuit element with this analogy signal processing and convert digital signal to and pass the oneself back and detect module 10, by this oneself detect the module 10 more former test signals of sending and the digital signal passed back between linear relationship; If the result of this comparison exceeds a default tolerance interval, then need the parameter value of the first programmable gain amplifier 18 or the second programmable gain amplifier 26 is adjusted, wherein, this preset range is built in digital signal processor or a multicircuit in being and can eliminates in the exemplary systems in the read only memory that stylizes (EEPROM) (not shown).
When need the parameter value of the first programmable gain amplifier 18 or the second programmable gain amplifier 26 being adjusted, when obtaining its optimum parameter value, need set up the default median of the second programmable gain amplifier 26 and the maximum of the first programmable gain amplifier 18 earlier, this default median and maximum are all obtained by the preset range in the exemplary systems, and after foundation should be preset median and maximum, detect module 10 by the oneself again and send the loop that a test signal is heavily covered 24 of first codec, 12 to second codecs, and utilize a control signal that the maximum of the first programmable gain amplifier 18 is reduced gradually, till this oneself detected enough height of linear relationship between the digital signal that test signal that module 10 sent and second codec 24 passed back, the numerical value of this moment was the optimum parameter value of this first programmable gain amplifier 18; When if there is any one overload in the loop between first codec 12 and second codec 24, the oneself detect module 10 can detect this former send signal and pass back produce non-linear relation between signal, having preset parameter value because of the second programmable gain amplifier 26 is median, so the situation of non-linear relation can occur in the setting of the first programmable gain amplifier 18.
After determining the optimum parameter value of this first programmable gain amplifier 18, then find out the second programmable gain amplifier, 26 optimum parameter values.The parameter value of setting up this second programmable gain amplifier 26 earlier is a maximum, this maximum is built in the preset range of this exemplary systems in also, detect module 10 by this oneself again and send a test signal, heavily cover the loop of 24 of first codec, 12 to second codecs, and utilize a control signal that this maximum is reduced gradually, up to this oneself detect test signal that module 10 sent and this second codec 24 pass enough height of linear relationship between signal back till, the numerical value of this moment is the optimum parameter value of this second programmable gain amplifier 26, when if there is any one overload in the loop that first codec 12 and second codec are 24, the oneself detect module 10 can detect this former send signal and pass back produce non-linear relation between signal, because the first programmable gain amplifier 18 has had definite parameter value, so the situation of non-linear relation can occur in the setting of the second programmable gain amplifier 26; The gain parameter of these two programmable gain amplifiers 18,26 is that a tolerance interval is arranged respectively, it is recorded in digital signal processor or a multicircuit can be eliminated in the exemplary systems of the read only memory that stylizes (EEPROM) (not shown), if PGA minimum value＜optimization parameter value＜PGA maximum is then sent correct message; Otherwise, when the oneself detects module 10 can't be with the parameter adjustment of the first programmable gain amplifier 18 and the second programmable gain amplifier 26 during to optimization, the expression internal circuit element may be damaged, and can send an alert news to notify user or testing staff this moment.Detecting after gain parameter finishes, if also have other parameter projects to detect, then should the oneself detect module 10 and send test signal again, repeat above step and be all optimization until the parameter of all circuit elements.
A loud speaker to the one-to-many system of plural microphone in as shown in Figure 2, desire detects gain inequality, this oneself detects test signal to the first circuit element that module 10 sends a test gain inequality, handle this signal by the first programmable gain amplifier 18 in first codec 12 in this first circuit element, first codec 12 also converts digital signal to anaiog signal, again after an amplifier 14 amplifies these analogy signals, be loud speaker 16 signal of sounding by the sound dispensing device; This voice signal is by sound receiver, be after microphone 20 receives, its anaiog signal reaches the second circuit element through another amplifier 22, promptly second codec 24 that comprises the second programmable gain amplifier 26 with this analogy signal processing after, become digital signal to pass the oneself back this analogy conversion of signals and detect module 10, detecting module 10 by the oneself measures this former test signal and this of sending and passes linear differences between signal back, again according to the first programmable gain amplifier 18 and the optimized flow process of the second programmable gain amplifier, 26 parameter values in the aforementioned system one to one, with the parameter value optimization of the first programmable gain amplifier 18 and the second programmable gain amplifier 26; Detecting first and second programmable gain amplifier 18, detect the gain parameter of the first programmable gain amplifier 18 and the 3rd programmable gain amplifier 36 in the time of 26 gain parameter, oneself's testing circuit 10 sends this test signal of test gain, after first codec 12 and amplifier 14 are sent by loud speaker 16, by another sound receiver is that microphone 30 receives, be sent to the tertiary circuit element through amplifier 32, promptly the 3rd codec 34 that comprises the 3rd programmable gain amplifier 36 handle and coding after, pass this signal that is converted into digital signal back oneself and detect module 10, again according to the first programmable gain amplifier 18 and the optimized flow process of the second programmable gain amplifier, 26 parameter values in the system one to one, parameter optimization with the first programmable gain amplifier 18 and the 3rd programmable gain amplifier 36, these three programmable gain amplifiers 18,26,36 gain parameter is that a tolerance interval is arranged respectively, it is recorded in digital signal processor or a multicircuit can be eliminated in the exemplary systems of the read only memory that stylizes (EEPROM) (not shown), if PGA minimum value＜optimization parameter value＜PGA maximum, then send correct information, otherwise then send the false alarm message; The further relatively second programmable gain amplifier 26 of microphone end and the 3rd programmable gain amplifier 36 consistency of its parameter values and received signal relatively, and to adjust its consistency be the best, promptly finished the detection and the adjustment of gain; This oneself detects module 10 and can repeat above step and continue to detect other parameters, and with this parameter adjustment to optimization.Wherein, when the digital signal of passing back of 36 of the second programmable gain amplifier 26 and the 3rd programmable gain amplifiers does not reach consistency, represent then that its parameter value is set and do not reach optimization, should further proofread and correct otherness therebetween; Still can't reaching an agreement property if repetitiousness is adjusted parameter value, represent that promptly the second programmable gain amplifier 26 and the 3rd programmable gain amplifier 36 differences are excessive, can send an alert news to notify user or testing staff at this moment.
In sum, the present invention is the self detection and correction method of an electroacoustics system, be to utilize to be built in intrasystem oneself in one and to detect module and send a test signal, through after this test signal of a circuit element processes by the sound dispensing device signal of sounding, after at least one sound receiver receives this voice signal, pass through other this signal of at least one circuit element processes again, and this conversion of signals become to pass this oneself back after the digital signal and detect module, by this oneself detect module relatively this former test signal and this of sending pass linear relationship between the numerical digit signal back; Each circuit element all is provided with a parameter value, whether detect the comparative result decision of module adjusts this parameter value according to this oneself, the linear relationship of comparison between parameter value is with its optimization, and compare the consistency of this parameter value and received signal, this consistency is adjusted into the best, the test and the adjustment of the next item down parameter carried out in the recirculation that continues, so just do not need external checkout equipment or finished product to take apart, can directly utilize this oneself to detect the detection that module carries out internal circuit, can significantly reduce production costs; And can prolong the life-span of this electroacoustics system by this stability and performance that promotes electroacoustics system.
The above is preferred embodiment of the present invention only, is not to be used for limiting scope of the invention process.So be that all equalizations of doing according to described feature of the present patent application scope and spirit change or modification, all should be included in the claim of the present invention.
Claims (10)
1, a kind of self detection and correction method of electroacoustics system is characterized in that, is may further comprise the steps:
One oneself detects module and sends a test signal, and this test signal reaches a sound dispensing device after through one first circuit element processes and sends a voice signal;
At least one sound receiver receives this voice signal, after at least one second circuit element treatment conversion is a digital signal, passes this digital signal back this oneself and detects module, relatively the linear differences between this test signal and this digital signal; And
Determine the whether needs adjustment of parameter value of this first and second circuit element according to the result of this comparison, and with its optimization.
2, the self detection and correction method of electroacoustics system as claimed in claim 1 is characterized in that, the described module that should the oneself detects is built in an integrated circuit or the digital signal processor in being.
3, the self detection and correction method of electroacoustics system as claimed in claim 1 is characterized in that, and is described, and the parameter of this circuit element is to comprise gain, sensitivity, phase delay and frequency response.
4, the self detection and correction method of electroacoustics system as claimed in claim 1, it is characterized in that, described this sound issue device is a player, this sound receiver is a microphone, and be to comprise a codec in this first and second circuit element, digital signal is converted to anaiog signal or anaiog signal is converted to digital signal.
5, the self detection and correction method of electroacoustics system as claimed in claim 1 is characterized in that, when described linear differences when between this test signal and this digital signal surpasses default scope, need adjust the parameter value of this first and second circuit element.
6, the self detection and correction method of electroacoustics system as claimed in claim 1, it is characterized in that, the step of the parameter of this first circuit element of described adjustment, be to set up a default median of this second circuit component parameters and the maximum of this first circuit element parameter earlier, this oneself detects module and sends a test signal again, and this maximum is reduced gradually with a control signal, till this oneself detected enough height of linearity between this test signal of module and digital signal that this is passed back, the numerical value of this moment was the optimum parameter value of this first circuit element; And after the parameter value of this first circuit element of decision, set up the maximum of this second circuit component parameters earlier, detect module by this oneself again and send a test signal, and send a control signal this maximum is reduced gradually, till the enough height of the linearity between this test signal and this digital signal of passing back, the numerical value of this moment is the optimum parameter value of this second circuit element.
7, the self detection and correction method of electroacoustics system as claimed in claim 6 is characterized in that, when there is any one when overload in the loop between this first and second circuit element, then this first or the setting of second circuit element make whole circuit produce non-linear relation.
8, the self detection and correction method of electroacoustics system as claimed in claim 1 is characterized in that, when the described project that should desire test parameter was plural number, it was to send different test signals to come Automatic Cycle to test that this oneself detects module; If this selftest module can't be with the parameter adjustment of this first and second circuit element during to optimization, it is to send an alert news to notify user or testing staff.
9, the self detection and correction method of electroacoustics system as claimed in claim 1, it is characterized in that, when this sound receiver and this second circuit element are plural number, be heavily to be covered with to state step and obtain this second circuit element parameter value separately, its consistency and relatively with its optimization.
10. the self detection and correction method of electroacoustics system as claimed in claim 9, it is characterized in that, when the interelement digital signal of passing back of this plural number second circuit does not reach consistency, parameter value that then should plural number second circuit element is set and is not reached optimization, should further proofread and correct otherness therebetween; Still can't reaching an agreement property if repetitiousness is adjusted parameter value, then should plural number second circuit interelement otherness excessive, send an alert news to notify user or testing staff.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410085723 CN1756444B (en) | 2004-09-30 | 2004-09-30 | Self detection and correction method for electroacoustic system |
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| CN 200410085723 CN1756444B (en) | 2004-09-30 | 2004-09-30 | Self detection and correction method for electroacoustic system |
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| CN1756444A true CN1756444A (en) | 2006-04-05 |
| CN1756444B CN1756444B (en) | 2011-09-28 |
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| CN 200410085723 Expired - Fee Related CN1756444B (en) | 2004-09-30 | 2004-09-30 | Self detection and correction method for electroacoustic system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155438B (en) * | 2006-09-26 | 2011-12-28 | 张秀丽 | Frequency response adaptive equalization method for audio device |
| CN101420650B (en) * | 2007-10-24 | 2012-10-17 | 比亚迪股份有限公司 | Test control method |
| CN103442115A (en) * | 2013-08-23 | 2013-12-11 | 杭州爱华仪器有限公司 | Mobile phone frequency response automatic calibration system and automatic calibration method thereof |
| CN103685677A (en) * | 2012-08-31 | 2014-03-26 | 华为终端有限公司 | Audio processing method and device, and terminal equipment |
| CN103778040A (en) * | 2012-10-18 | 2014-05-07 | 通用汽车环球科技运作有限责任公司 | Self-diagnostic non-bussed control module |
| CN104244161A (en) * | 2014-09-17 | 2014-12-24 | 苏州酷果信息技术有限公司 | Method and device for testing equipment with voice playing function and voice recording function |
| CN104243652A (en) * | 2014-09-25 | 2014-12-24 | 南京声准科技有限公司 | Audio self-test method of communication terminals |
| CN109313909A (en) * | 2018-08-22 | 2019-02-05 | 深圳市汇顶科技股份有限公司 | Assess method, unit and the system of microphone array consistency |
| WO2020160703A1 (en) * | 2019-02-08 | 2020-08-13 | Ningbo Geely Automobile Research & Development Co., Ltd. | Audio diagnostics in a vehicle |
| CN113518298A (en) * | 2020-04-09 | 2021-10-19 | 圣布拉斯特有限公司 | Audio correction system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPM900594A0 (en) * | 1994-10-24 | 1994-11-17 | Cochlear Pty. Limited | Automatic sensitivity control |
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2004
- 2004-09-30 CN CN 200410085723 patent/CN1756444B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155438B (en) * | 2006-09-26 | 2011-12-28 | 张秀丽 | Frequency response adaptive equalization method for audio device |
| CN101420650B (en) * | 2007-10-24 | 2012-10-17 | 比亚迪股份有限公司 | Test control method |
| CN103685677A (en) * | 2012-08-31 | 2014-03-26 | 华为终端有限公司 | Audio processing method and device, and terminal equipment |
| CN103778040B (en) * | 2012-10-18 | 2017-04-12 | 通用汽车环球科技运作有限责任公司 | Self-diagnostic non-bussed control module |
| CN103778040A (en) * | 2012-10-18 | 2014-05-07 | 通用汽车环球科技运作有限责任公司 | Self-diagnostic non-bussed control module |
| US9510067B2 (en) | 2012-10-18 | 2016-11-29 | GM Global Technology Operations LLC | Self-diagnostic non-bussed control module |
| CN103442115B (en) * | 2013-08-23 | 2015-09-30 | 杭州爱华仪器有限公司 | Mobile phone frequency response automated calibration system and automatic calibrating method thereof |
| CN103442115A (en) * | 2013-08-23 | 2013-12-11 | 杭州爱华仪器有限公司 | Mobile phone frequency response automatic calibration system and automatic calibration method thereof |
| CN104244161A (en) * | 2014-09-17 | 2014-12-24 | 苏州酷果信息技术有限公司 | Method and device for testing equipment with voice playing function and voice recording function |
| CN104243652A (en) * | 2014-09-25 | 2014-12-24 | 南京声准科技有限公司 | Audio self-test method of communication terminals |
| CN109313909A (en) * | 2018-08-22 | 2019-02-05 | 深圳市汇顶科技股份有限公司 | Assess method, unit and the system of microphone array consistency |
| WO2020160703A1 (en) * | 2019-02-08 | 2020-08-13 | Ningbo Geely Automobile Research & Development Co., Ltd. | Audio diagnostics in a vehicle |
| CN113518298A (en) * | 2020-04-09 | 2021-10-19 | 圣布拉斯特有限公司 | Audio correction system |
| CN113518298B (en) * | 2020-04-09 | 2022-06-07 | 圣布拉斯特有限公司 | Audio correction system |
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