CN107801131A - A kind of automatic musical frequency response adjustment power amplifier and its application method - Google Patents
A kind of automatic musical frequency response adjustment power amplifier and its application method Download PDFInfo
- Publication number
- CN107801131A CN107801131A CN201711055231.2A CN201711055231A CN107801131A CN 107801131 A CN107801131 A CN 107801131A CN 201711055231 A CN201711055231 A CN 201711055231A CN 107801131 A CN107801131 A CN 107801131A
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- CN
- China
- Prior art keywords
- dsp
- power amplifier
- arm processor
- frequency response
- signal
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- 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.)
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
Abstract
The present invention relates to a kind of automatic musical frequency response to adjust power amplifier, including the dual processor framework cooperateed with using DSP as core, arm processor, DSP is used for the audio algorithms such as process signal selection, digital filtering, equilibrium, signal generator, peak value measurement, arm processor is used to handle the work such as user's operation, system administration, algorithm computing, also include that sound equipment D-type power amplifier can be directly driven, can be according to the actual conditions of use environment, environmental factor is compensated by way of adjusting audio processing parameters, so as to solve problem.
Description
Technical field
The present invention relates to digital audio processor technical field, more particularly to a kind of automatic musical frequency response adjustment power
Amplifier and its application method.
Background technology
Ultra-thin television audio amplifier is due to the limitation of volume at present, it is necessary to which using small size loudspeaker, and small loudspeaker is in frequency
Many defects in response range all be present, therefore just need DSP by being handled audio signal to make up these defects, allow
Product obtains more preferable tonequality.But such audio frequency processing system is all in order at the purpose of compensation loudspeaker deficiencies and set
Meter, what system debug, test were also carried out in the constant temperature and humidity anechoic chamber of standard, not by different use environments to tonequality
Influence is taken into account, for example, hearing effect of the same set of sound equipment in parlor and the hearing effect in study just have it is apparent
Difference, this is due to the presence that the factors such as the size in room, the layout of household cause to have frequency trap, reflecting surface in environment, is made
The frequency response curve of sound equipment otherwise flat is changed.
The content of the invention
To the above-mentioned state of the art, the technical problems to be solved by the invention are to provide one kind can be according to use
The actual conditions of environment, environmental factor is compensated by way of adjusting audio processing parameters, so as to solve the automatic sound of problem
Ring frequency response adjustment power amplifier.
Technical scheme is used by the present invention solves above-mentioned technical problem：A kind of automatic musical frequency response adjusts power
Amplifier, including the dual processor framework cooperateed with using DSP as core, arm processor, DSP are used for process signal selection, numeral filter
The audio algorithms such as ripple, equilibrium, signal generator, peak value measurement, arm processor are used to handle user's operation, system administration, algorithm
The work such as computing, in addition to sound equipment D-type power amplifier can be directly driven.
A kind of automatic musical frequency response adjusts the signal of power amplifier application method, first arm processor control DSP
Generator sends sine wave signal, and the signal amplifies by power amplifier and promotes loudspeaker to send sound wave, and sound wave can surveyed
Some changes are produced in test ring border.At the same time, microphone receives sound wave, and enters DSP by ADC samplings and carry out signal in advance
Reason.Then, the data that arm processor is read after DSP processing are calculated, and result are present in RAM, this completes one
The test of Frequency point, following ARM can complete 20Hz to the test of 200 Frequency points altogether between 20KHz according to setting.Finally
All results are carried out segmentation and average, calculate midrange, extraction characteristic value, matching characteristic value etc. by arm processor
Reason, the filter parameter according to needed for the matching result of characteristic value calculates audio frequency process, and update into DSP.
Compared with prior art, the advantage of the invention is that：The present invention can pass through according to the actual conditions of use environment
The mode for adjusting audio processing parameters compensates environmental factor, so as to solving problem.
Brief description of the drawings
Fig. 1 adjusts power amplifier structure schematic diagram for a kind of automatic musical frequency response of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing, the present invention is entered
Row is further described.
A kind of automatic musical frequency response adjusts power amplifier, including pair cooperateed with using DSP as core, arm processor
Processor architecture, DSP are used for the audio algorithms such as process signal selection, digital filtering, equilibrium, signal generator, peak value measurement,
Arm processor is used to handle the work such as user's operation, system administration, algorithm computing, in addition to can directly drive sound equipment D class work(
Rate amplifier.
A kind of automatic musical frequency response adjusts the signal of power amplifier application method, first arm processor control DSP
Generator sends sine wave signal, and the signal amplifies by power amplifier and promotes loudspeaker to send sound wave, and sound wave can surveyed
Some changes are produced in test ring border.At the same time, microphone receives sound wave, and enters DSP by ADC samplings and carry out signal in advance
Reason.Then, the data that arm processor is read after DSP processing are calculated, and result are present in RAM, this completes one
The test of Frequency point, following ARM can complete 20Hz to the test of 200 Frequency points altogether between 20KHz according to setting.Finally
All results are carried out segmentation and average, calculate midrange, extraction characteristic value, matching characteristic value etc. by arm processor
Reason, the filter parameter according to needed for the matching result of characteristic value calculates audio frequency process, and update into DSP.
Compared with prior art, the advantage of the invention is that：The present invention can pass through according to the actual conditions of use environment
The mode for adjusting audio processing parameters compensates environmental factor, so as to solving problem.
Claims (2)
1. a kind of automatic musical frequency response adjusts power amplifier, it is characterised in that including using DSP as core, arm processor
The dual processor framework of collaboration, DSP are used for the sounds such as process signal selection, digital filtering, equilibrium, signal generator, peak value measurement
Frequency algorithm, arm processor is used to handle the work such as user's operation, system administration, algorithm computing, in addition to can directly drive sound
Ring D-type power amplifier.
2. a kind of automatic musical frequency response adjusts power amplifier application method, it is characterised in that arm processor controls first
DSP signal generator sends sine wave signal, and the signal amplifies by power amplifier and promotes loudspeaker to send sound wave, sound
Ripple can produce some changes in test environment, and at the same time, microphone receives sound wave, and enters DSP by ADC samplings and carry out
Signal Pretreatment, then, the data that arm processor reads after DSP processing are calculated, and result is present in RAM, thus complete
Into the test of a Frequency point, following ARM can complete 20Hz to 200 Frequency points altogether between 20KHz according to setting
Test, last arm processor by all results carry out segmentation average, calculates midrange, extraction characteristic value, matching spy
The processing such as value indicative, the filter parameter according to needed for the matching result of characteristic value calculates audio frequency process, and update into DSP
Go.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055231.2A CN107801131A (en) | 2017-11-01 | 2017-11-01 | A kind of automatic musical frequency response adjustment power amplifier and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055231.2A CN107801131A (en) | 2017-11-01 | 2017-11-01 | A kind of automatic musical frequency response adjustment power amplifier and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107801131A true CN107801131A (en) | 2018-03-13 |
Family
ID=61548667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711055231.2A Pending CN107801131A (en) | 2017-11-01 | 2017-11-01 | A kind of automatic musical frequency response adjustment power amplifier and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107801131A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111314825A (en) * | 2018-12-11 | 2020-06-19 | 无锡华润矽科微电子有限公司 | System and method for automatically adjusting frequency response curve of loudspeaker |
| CN111479197A (en) * | 2020-04-30 | 2020-07-31 | 北京猎户星空科技有限公司 | Audio playing method, device, system, equipment and medium |
| CN111586530A (en) * | 2020-05-14 | 2020-08-25 | 广州声德电子有限公司 | Sound box processor |
Citations (5)
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| CN101137250A (en) * | 2007-10-08 | 2008-03-05 | 卢灿光 | Vehicle-mounted acoustics self-adaptive sound field regulating method and device |
| CN103414991A (en) * | 2013-05-21 | 2013-11-27 | 杭州联汇数字科技有限公司 | Self-adaptive adjustment method for indoor sound reinforcement system |
| US20140177871A1 (en) * | 2012-12-26 | 2014-06-26 | Dts Llc | Systems and methods of frequency response correction for consumer electronic devices |
| CN104038882A (en) * | 2014-05-26 | 2014-09-10 | 小米科技有限责任公司 | Loudspeaker debugging model calibration method and loudspeaker debugging method and device |
| CN106131726A (en) * | 2016-07-22 | 2016-11-16 | 歌尔科技有限公司 | The earphone active denoising method of active noise reduction earphone ear muff material different with adaptation |
-
2017
- 2017-11-01 CN CN201711055231.2A patent/CN107801131A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137250A (en) * | 2007-10-08 | 2008-03-05 | 卢灿光 | Vehicle-mounted acoustics self-adaptive sound field regulating method and device |
| US20140177871A1 (en) * | 2012-12-26 | 2014-06-26 | Dts Llc | Systems and methods of frequency response correction for consumer electronic devices |
| CN103414991A (en) * | 2013-05-21 | 2013-11-27 | 杭州联汇数字科技有限公司 | Self-adaptive adjustment method for indoor sound reinforcement system |
| CN104038882A (en) * | 2014-05-26 | 2014-09-10 | 小米科技有限责任公司 | Loudspeaker debugging model calibration method and loudspeaker debugging method and device |
| CN106131726A (en) * | 2016-07-22 | 2016-11-16 | 歌尔科技有限公司 | The earphone active denoising method of active noise reduction earphone ear muff material different with adaptation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111314825A (en) * | 2018-12-11 | 2020-06-19 | 无锡华润矽科微电子有限公司 | System and method for automatically adjusting frequency response curve of loudspeaker |
| CN111479197A (en) * | 2020-04-30 | 2020-07-31 | 北京猎户星空科技有限公司 | Audio playing method, device, system, equipment and medium |
| CN111479197B (en) * | 2020-04-30 | 2021-10-01 | 北京猎户星空科技有限公司 | Audio playing method, device, system, equipment and medium |
| CN111586530A (en) * | 2020-05-14 | 2020-08-25 | 广州声德电子有限公司 | Sound box processor |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |
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| RJ01 | Rejection of invention patent application after publication |