CN113766407B - Audio phase detection system based on singlechip - Google Patents
Audio phase detection system based on singlechip Download PDFInfo
- Publication number
- CN113766407B CN113766407B CN202110903705.4A CN202110903705A CN113766407B CN 113766407 B CN113766407 B CN 113766407B CN 202110903705 A CN202110903705 A CN 202110903705A CN 113766407 B CN113766407 B CN 113766407B
- Authority
- CN
- China
- Prior art keywords
- singlechip
- audio
- chip microcomputer
- detection system
- phase detection
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000005236 sound signal Effects 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention relates to the field of audio detection, in particular to an audio phase detection system and method based on a single chip microcomputer. The system comprises a singlechip, a power amplifier, a filter and a waveform shaper; the left speaker and the right speaker are connected with corresponding pins of the singlechip through corresponding power amplifiers, filters and waveform shapers in sequence, wherein the corresponding pins of the singlechip are connected with a production line control system. The invention has the beneficial effects that: the invention can be used for realizing the operations of sound collection, filtering, shaping, conversion, judgment and output of the left and right speakers under the detection scene of most double speakers, realizing the detection of the same phase of the double speakers, being linked with an automatic production line, realizing the accurate and rapid audio phase detection function, retaining the manual release function, replacing the original manual position detection, and improving the detection accuracy and the production efficiency.
Description
Technical Field
The invention relates to the field of audio detection, in particular to an audio phase detection system and method based on a single chip microcomputer.
Background
The loudspeaker is driven by amplifying sound signals through a power amplification chip and then driving the loudspeaker to work, a group of loudspeakers generally consists of L and R loudspeakers, the driving signals L_OUT+, L_OUT-, R_OUT+ and R_OUT-are composed of four paths of signals, the positive electrode and the negative electrode of a single loudspeaker are strictly distinguished, if the positive electrode and the negative electrode of one of the L or R loudspeakers are connected reversely, the loudspeaker is actually in reverse phase, when only one of the L and R loudspeakers is in reverse phase, abnormal phenomena such as noise, sound weakness and the like can occur, the sound quality is influenced, and the hidden quality hidden trouble is difficult to check.
In actual production, in order to prevent the occurrence of the inversion of a single loudspeaker, the loudspeaker wire harness is subjected to foolproof treatment to prevent the reverse connection of a production line, but the situation that the wire harness is wrongly processed cannot be avoided by the measure, and if the wire harness is subjected to the inversion during processing, the abnormal sound can be caused.
In the past, the inspection mode of single anti-phase fault of an L/R loudspeaker is that white noise with fixed frequency is played when a product passes through an inspection position through manual inspection of a production line, sound emitted by a left loudspeaker and a right loudspeaker is collected through a microphone, amplified by a power amplifier and output to two channels CH1/CH2 of an oscilloscope, and the waveform phase of an audio signal collected by the oscilloscope is compared and confirmed by the phase of the manual visual inspection oscilloscope.
Disclosure of Invention
In order to solve the problem of insufficient manual detection precision and complex operation in the background technology, the invention provides an audio phase detection system and method based on a singlechip, and the specific scheme is as follows:
an audio phase detection system based on a singlechip comprises the singlechip, a power amplifier, a filter and a waveform shaper; the left speaker and the right speaker are connected with corresponding pins of the singlechip through corresponding power amplifiers, filters and waveform shapers in sequence, wherein the corresponding pins of the singlechip are connected with a production line control system.
Specifically, the filter includes a band-pass filter.
Specifically, the waveform shaper includes a schmitt trigger.
Specifically, the device also comprises an indicator lamp connected with the corresponding pin of the singlechip.
Specifically, the device also comprises a buzzer connected with the corresponding pin of the singlechip.
Specifically, the device also comprises a manual release button connected with the pin corresponding to the singlechip.
A method for the above system, comprising the steps of:
s1, acquiring audio signals of a left speaker and a right speaker by a singlechip;
s2, selecting any loudspeaker, starting from the low level to the high level of the audio signal of the loudspeaker, and sampling the audio signal of the other loudspeaker in a set period;
and S3, if all three continuous sampling are high level, judging that the sample is qualified, otherwise judging that the sample is unqualified.
The invention has the beneficial effects that:
(1) The invention can be used for realizing the operations of sound collection, filtering, shaping, conversion, judgment and output of the left and right speakers under the detection scene of most double speakers, realizing the detection of the same phase of the double speakers, being linked with an automatic production line, realizing the accurate and rapid audio phase detection function, retaining an oscilloscope interface and a manual release function, being capable of replacing the original manual detection, and improving the detection accuracy and the production efficiency.
(2) The Schmitt trigger can accurately convert the audio signal into the square wave signal, and the square wave assignment meets the level requirement of GPIO, so that the analog-to-digital conversion process can be replaced with low cost.
(3) Through setting up artifical release button, can guarantee the stability of system when the system breaks down.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a flow chart of the method of the present invention;
FIG. 3 is a schematic diagram of an embodiment;
fig. 4 is a simulation waveform diagram of an embodiment.
The specific identification in the figure is as follows:
1. a single chip microcomputer; 2. a power amplifier, 3, a filter; 4. a waveform shaper; 5. a production line control system; 6. an indicator light; 7. a buzzer; 8. and manually releasing the keys.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention discloses an audio phase detection system and method based on a singlechip, comprising the following steps:
as shown in fig. 1, an audio phase detection system based on a single chip microcomputer comprises a single chip microcomputer 1, a power amplifier 2, a filter 3 and a waveform shaper 4; the left speaker and the right speaker are connected with corresponding pins of the singlechip 1 sequentially through the corresponding power amplifier 2, the filter 3 and the waveform shaper 4, wherein the corresponding pins of the singlechip 1 are connected with the production line control system 5.
The filter 3 comprises a band pass filter.
The waveform shaper 4 comprises a schmitt trigger.
The system also comprises an indicator lamp 6 connected with the corresponding pin of the singlechip 1.
The system also comprises a buzzer 7 connected with the corresponding pin of the singlechip 1.
The system also comprises a manual release button 8 connected with the corresponding pin of the singlechip 1.
As shown in fig. 2, the method for the above system includes the steps of:
s1, acquiring audio signals of a left speaker and a right speaker by a singlechip 1;
s2, selecting any loudspeaker, starting from the low level to the high level of the audio signal of the loudspeaker, and sampling the audio signal of the other loudspeaker in a set period;
and S3, if all three continuous sampling are high level, judging that the sample is qualified, otherwise judging that the sample is unqualified.
As shown in fig. 3 and 4, the high-low level state of the R audio input is respectively sampled for 50ms, 100ms and 150ms from the low level to the high level of the left speaker audio input, if the three samples are all high level, the judgment is qualified, otherwise, the judgment is unqualified. For the condition that the station is free of products, the schmitt trigger continuously outputs low level, and the single chip microcomputer 1 can not continuously keep the fail output in the state of receiving effective high level.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An audio phase detection system based on a singlechip is characterized by comprising the singlechip (1), a power amplifier (2), a filter (3) and a waveform shaper (4); the left speaker and the right speaker are connected with corresponding pins of the singlechip (1) sequentially through the corresponding power amplifier (2), the filter (3) and the waveform shaper (4), wherein the corresponding pins of the singlechip (1) are connected with the production line control system (5);
the method steps of the detection system comprise:
s1, acquiring audio signals of a left speaker and a right speaker by a singlechip (1);
s2, selecting any loudspeaker, starting from the low level to the high level of the audio signal of the loudspeaker, and sampling the audio signal of the other loudspeaker in a set period;
and S3, if all three continuous sampling are high level, judging that the sample is qualified, otherwise judging that the sample is unqualified.
2. An audio phase detection system based on a single chip microcomputer according to claim 1, characterized in that the filter (3) comprises a band pass filter.
3. The audio phase detection system based on a single chip microcomputer according to claim 1, characterized in that the waveform shaper (4) comprises a schmitt trigger.
4. The audio phase detection system based on the single-chip microcomputer according to claim 1, further comprising an indicator lamp (6) connected with a corresponding pin of the single-chip microcomputer (1).
5. The audio phase detection system based on the single-chip microcomputer according to claim 1, further comprising a buzzer (7) connected with a corresponding pin of the single-chip microcomputer (1).
6. The audio phase detection system based on the single-chip microcomputer according to claim 1, further comprising a manual release button (8) connected with a pin corresponding to the single-chip microcomputer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903705.4A CN113766407B (en) | 2021-08-06 | 2021-08-06 | Audio phase detection system based on singlechip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110903705.4A CN113766407B (en) | 2021-08-06 | 2021-08-06 | Audio phase detection system based on singlechip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113766407A CN113766407A (en) | 2021-12-07 |
| CN113766407B true CN113766407B (en) | 2024-03-08 |
Family
ID=78788663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110903705.4A Active CN113766407B (en) | 2021-08-06 | 2021-08-06 | Audio phase detection system based on singlechip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113766407B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319714A (en) * | 1992-09-23 | 1994-06-07 | Mctaggart James E | Audio phase polarity test system |
| JPH06311578A (en) * | 1993-04-19 | 1994-11-04 | Clarion Co Ltd | Speaker polarity deciding method in audio system |
| JP2000102089A (en) * | 1998-09-22 | 2000-04-07 | Yamaha Corp | Polarity discrimination circuit for speaker, audio circuit provided with polarity discrimination function of speaker and audio circuit provided with polarity discrimination and polarity changeover function of speaker |
| JP2004297368A (en) * | 2003-03-26 | 2004-10-21 | Yamaha Corp | Array speaker inspection apparatus, array speaker device, and method for determining wiring of device |
| JP2006279753A (en) * | 2005-03-30 | 2006-10-12 | Yamaha Corp | Speaker inspection method, speaker inspection apparatus and sound reproducing apparatus |
| JP2012160913A (en) * | 2011-01-31 | 2012-08-23 | Toshiba Corp | Digital broadcast receiver and control method of audio output signal |
| WO2015118643A1 (en) * | 2014-02-06 | 2015-08-13 | 三菱電機株式会社 | Audio device |
| CN108900835A (en) * | 2018-09-21 | 2018-11-27 | 南京创维平面显示科技有限公司 | A kind of television audio phase test device and test method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090232318A1 (en) * | 2006-07-03 | 2009-09-17 | Pioneer Corporation | Output correcting device and method, and loudspeaker output correcting device and method |
-
2021
- 2021-08-06 CN CN202110903705.4A patent/CN113766407B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5319714A (en) * | 1992-09-23 | 1994-06-07 | Mctaggart James E | Audio phase polarity test system |
| JPH06311578A (en) * | 1993-04-19 | 1994-11-04 | Clarion Co Ltd | Speaker polarity deciding method in audio system |
| JP2000102089A (en) * | 1998-09-22 | 2000-04-07 | Yamaha Corp | Polarity discrimination circuit for speaker, audio circuit provided with polarity discrimination function of speaker and audio circuit provided with polarity discrimination and polarity changeover function of speaker |
| US6681019B1 (en) * | 1998-09-22 | 2004-01-20 | Yamaha Corporation | Polarity determining circuit for loudspeakers, an audio circuit having a function of determining polarities of loudspeakers, and an audio circuit having functions of determining polarities of loudspeakers and switching the polarities |
| JP2004297368A (en) * | 2003-03-26 | 2004-10-21 | Yamaha Corp | Array speaker inspection apparatus, array speaker device, and method for determining wiring of device |
| JP2006279753A (en) * | 2005-03-30 | 2006-10-12 | Yamaha Corp | Speaker inspection method, speaker inspection apparatus and sound reproducing apparatus |
| JP2012160913A (en) * | 2011-01-31 | 2012-08-23 | Toshiba Corp | Digital broadcast receiver and control method of audio output signal |
| WO2015118643A1 (en) * | 2014-02-06 | 2015-08-13 | 三菱電機株式会社 | Audio device |
| CN108900835A (en) * | 2018-09-21 | 2018-11-27 | 南京创维平面显示科技有限公司 | A kind of television audio phase test device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113766407A (en) | 2021-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9191753B2 (en) | Hearing aid and a method of enhancing speech reproduction | |
| US4542525A (en) | Method and apparatus for classifying audio signals | |
| CN102970646B (en) | Loudspeaker abnormal sound detection circuit device and detection method based on constant current source power amplification | |
| WO2007063880A1 (en) | Position detection system, audio device and terminal device used in the position detection system | |
| CN111866690A (en) | Microphone testing method and device | |
| CN113766407B (en) | Audio phase detection system based on singlechip | |
| CN103796136A (en) | Equipment and method for ensuring output loudness and tone quality of different sound effect modes | |
| CN107438221A (en) | A kind of online loudspeaker acoustic pressure detector and detection method | |
| JP2007049413A (en) | Method for inspecting listening position, listening position inspection system and loudspeaker apparatus to be used for the system | |
| US20060050891A1 (en) | Method for automatic loudspeaker polarity determination through loudspeaker-room acoustic responses | |
| CN112822624A (en) | Linear array loudspeaker detection method and system based on FFT | |
| CN107465987A (en) | A kind of method of testing and its test system of interactive voice audio amplifier finished product pickup system | |
| CN108900835A (en) | A kind of television audio phase test device and test method | |
| CN210016636U (en) | Loudspeaker abnormal sound test system | |
| CN114566185A (en) | Abnormal sound automatic detection method and equipment and computer readable storage medium | |
| JPS55163453A (en) | Quality discriminating method of cast metal | |
| CN109510624B (en) | High-voltage digital-to-analog conversion and inspection device for airborne equipment | |
| CN111833894A (en) | Far-field pickup method and system based on far-field pickup model | |
| CN106507263B (en) | Loudspeaker exception sound detecting circuit device and detection method based on adaptive-filtering | |
| CN107017006B (en) | Method and system for detecting simulated subsonic tail based on infinite impulse response filter | |
| CN112822623A (en) | Wireless earphone abnormity detection method and structure | |
| CN104469621A (en) | Anti-interference circuit and method of voice remote controller | |
| CN110220593A (en) | A kind of sound abnormality detecting system based on deep learning | |
| CN220440674U (en) | Active two-frequency-division audio amplifying circuit | |
| CN212364611U (en) | Gold detection machine capable of inhibiting product effect and demodulation circuit thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |