CN110099350A - The test method of power amplifier - Google Patents
The test method of power amplifier Download PDFInfo
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- CN110099350A CN110099350A CN201910441346.8A CN201910441346A CN110099350A CN 110099350 A CN110099350 A CN 110099350A CN 201910441346 A CN201910441346 A CN 201910441346A CN 110099350 A CN110099350 A CN 110099350A
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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- General Health & Medical Sciences (AREA)
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- Acoustics & Sound (AREA)
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Abstract
The invention discloses the test methods of power amplifier, belong to field of hardware.The present invention is successively carried out using control terminal control test lead device under test according to test order, whether the power amplifier for checking Devices to test is normal, to be provided safeguard for the speech identifying function of Devices to test normal operation, the abort situation of Devices to test can be fast and accurately positioned, detection effect is improved.
Description
Technical field
The present invention relates to field of hardware more particularly to a kind of test methods of power amplifier.
Background technique
For intelligent voice system in the normal situation of software, can not recognition of speech signals or accuracy of speech recognition it is poor
The problem of, testing staff expends a large amount of human and material resources investigation reason still can not effective quick positioning failure reason.
Summary of the invention
Whether in view of the above-mentioned problems, now providing one kind, to be intended to effectively to detect intelligent voice system speech recognition normal,
The test method of the high power amplifier of detection efficiency.
A kind of test method of power amplifier, Devices to test are connect with control terminal and test lead respectively, the control terminal with it is described
Test lead connection；The control terminal controls the test lead and tests the Devices to test；Under the test method includes
State step:
S1. the control terminal carries out sound channel test to the Devices to test, judges whether the sound channel signal of output meets the
One preset condition, if so, executing step S2；If it is not, executing step S7；
S2. the control terminal carries out the test of total harmonic distortion plus noise to the Devices to test, judges the sound channel letter of output
Number whether meet the second preset condition, if so, executing step S3；If it is not, executing step S7；
S3. the control terminal carries out crosstalk test to the Devices to test, judges whether the sound channel signal of output meets the
Three preset conditions, if so, executing step S4；If it is not, executing step S7；
S4. the control terminal carries out amplitude-frequency response test to the Devices to test, judges whether the sound channel signal of output accords with
The 4th preset condition is closed, if so, executing step S5；If it is not, executing step S7；
S5. the control terminal carries out phase difference to the Devices to test and level difference is tested, and judges the sound channel signal of output
Whether fiveth preset condition is met, if so, executing step S6；If it is not, executing step S7；
S6. the control terminal carries out noise than test to the Devices to test, identifies whether the sound channel signal of output meets
6th preset condition executes step S7；
S7. generating test result terminates.
Preferably, the Devices to test is connect with the test lead using bluetooth approach；
The control terminal is used to send Devices to test output audio signal described in audio frequency control to the Devices to test；
The control terminal is also used to control the test lead and tests the Devices to test.
Preferably, in the step S1, the control terminal carries out sound channel test to the Devices to test, judges the sound of output
Whether road signal meets the first preset condition, comprising:
The control terminal carries out sound channel test by test lead device under test, and the control terminal controls the Devices to test
The audio of the first predeterminated frequency is played, and by the Devices to test output volume adjusting to volume threshold, the test lead is acquired
The sound channel signal of the Devices to test output, judges whether sound channel signal accords with the first preset condition；
First preset condition includes:
Whether the voltage value of sound channel signal is within the scope of voltage threshold；
Whether the power of sound channel signal is within the scope of power threshold.
Preferably, in the step S2, the control terminal carries out the test of total harmonic distortion plus noise to the Devices to test,
Judge whether the sound channel signal of output meets the second preset condition, comprising:
The control terminal carries out the test of total harmonic distortion plus noise, the control terminal control by test lead device under test
The Devices to test plays the audio of the second predeterminated frequency, and the test lead acquires the sound channel signal of the Devices to test output,
Judge whether sound channel signal accords with the second preset condition；
Whether the second preset condition includes: the decibel of sound channel signal within the scope of the first decibel threshold.
Preferably, in the step S3, the control terminal carries out crosstalk test to the Devices to test, judges the sound of output
Whether road signal meets third preset condition, comprising:
The control terminal carries out crosstalk test by test lead device under test, and the control terminal controls the Devices to test
The audio of third predeterminated frequency is played, the test lead acquires the sound channel signal of the Devices to test output, judges sound channel signal
Whether third preset condition is accorded with；
Third preset condition includes:
L channel to right channel decibel whether within the scope of the second decibel threshold；
Right channel to L channel decibel whether within the scope of third decibel threshold.
Preferably, in the step S4, the control terminal carries out amplitude-frequency response test to the Devices to test, judges to export
Sound channel signal whether meet the 4th preset condition, comprising:
The control terminal carries out amplitude-frequency response test by test lead device under test, and the control terminal control is described to be measured
The audio of the 4th predeterminated frequency of device plays, the test lead acquire the sound channel signal of the Devices to test output, judge sound channel
Whether signal accords with the 4th preset condition；
4th preset condition includes:
Whether the maximum decibel of sound channel signal is within the scope of the 4th decibel threshold；
Whether the minimum decibel of sound channel signal is within the scope of the 5th decibel threshold.
Preferably, in the step S5, the control terminal carries out phase difference to the Devices to test and level difference is tested, and sentences
Whether the sound channel signal of disconnected output meets the 5th preset condition, comprising:
The control terminal carries out phase difference by test lead device under test and level difference test, the control terminal control institute
The audio that Devices to test plays the 5th predeterminated frequency is stated, the test lead acquires the sound channel signal of the Devices to test output, sentences
Whether disconnected sound channel signal accords with the 5th preset condition；
5th preset condition includes:
When carrying out phase difference test, whether the phase difference between L channel and right channel is within the scope of preset difference value；
When carrying out level difference test, whether the decibel difference between L channel and right channel is in the 6th decibel threshold range
It is interior.
Preferably, in the step S6, the control terminal carries out noise than test to the Devices to test, identifies output
Whether sound channel signal meets the 6th preset condition, comprising:
The control terminal carries out noise than test by test lead device under test, and control terminal control is described to be measured to be set
The standby audio for playing the 6th predeterminated frequency, the test lead acquire the sound channel signal of the Devices to test output, judge that sound channel is believed
Number whether accord with the 6th preset condition；
6th preset condition includes:
Whether the noise decibel of L channel is in default first noise decibel range；
Whether the noise of L channel is than in default first noise comparing range；
Whether the noise decibel of right channel is in default second noise decibel range；
Whether the noise of right channel is than in default second noise comparing range.
Preferably, in the step S7, generating test result terminates, comprising:
Test result is imported in test template, test result is generated.
Above-mentioned technical proposal the utility model has the advantages that
In the technical program, is successively carried out, checked according to test order using control terminal control test lead device under test
Whether the power amplifier of Devices to test is normal, so that the speech identifying function normal operation for Devices to test provides safeguard, it can be quickly quasi-
The abort situation of true positioning Devices to test, improves detection effect.
Detailed description of the invention
Fig. 1 is a kind of flow chart of embodiment of the test method of power amplifier of the present invention；
Fig. 2 is a kind of test block diagram of embodiment of the test method of power amplifier of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
Intelligent voice system is incorrect because power amplifier Maximum Output Level is arranged, or cannot electrically meet the requirements etc. factors, meeting
Causing voice cannot identify or the problem of speech recognition effect difference, and based on the above issues, present applicant proposes one kind can be effective
Whether normal detect intelligent voice system speech recognition, the test method of the high power amplifier of detection efficiency.
As Figure 1-Figure 2, a kind of test method of power amplifier, Devices to test 1 are connect with control terminal 2 and test lead 3 respectively,
The control terminal 2 is connect with the test lead 3；The control terminal 2 controls the test lead 3 and surveys to the Devices to test 1
Examination；
It is connect it should be understood that bluetooth approach can be used with the test lead 3 in the Devices to test 1；
The Devices to test 1 can be connect by the communication mode of data line or WIFI with control terminal 2；
The control terminal 2 is used to send 1 output audio signal of Devices to test described in audio frequency control to the Devices to test 1；
The control terminal 2 is also used to control the test lead 3 and tests the Devices to test 1.
The test method includes the following steps:
S1. the control terminal carries out sound channel test to the Devices to test, judges whether the sound channel signal of output meets the
One preset condition, if so, executing step S2；If it is not, executing step S7；
Further, the step S1 includes:
The control terminal carries out sound channel test by test lead device under test, and the control terminal controls the Devices to test
The audio of the first predeterminated frequency is played, and by the Devices to test output volume adjusting to volume threshold, the test lead is acquired
The sound channel signal of the Devices to test output, judges whether sound channel signal accords with the first preset condition；
First preset condition includes:
Whether the voltage value of sound channel signal is within the scope of voltage threshold；
Whether the power of sound channel signal is within the scope of power threshold.
Wherein, sound channel signal includes left channel signals and right-channel signals.
In step sl when carrying out sound channel test, the voltage value of L channel and right channel is judged respectively；Simultaneously
The performance number of L channel and right channel is judged, is regarded if L channel and right channel have at least one not meet threshold range
Step S7 is executed for test crash.
For example and without limitation, before executing step S1, can device under test welding, power supply it is whether normal, with
And whether register setting meets the requirements and carries out investigation detection.
S2. the control terminal carries out the test of total harmonic distortion plus noise to the Devices to test, judges the sound channel letter of output
Number whether meet the second preset condition, if so, executing step S3；If it is not, executing step S7；
Further, the step S2 includes:
The control terminal carries out the test of total harmonic distortion plus noise, the control terminal control by test lead device under test
The Devices to test plays the audio of the second predeterminated frequency, and the test lead acquires the sound channel signal of the Devices to test output,
Judge whether sound channel signal accords with the second preset condition；
Whether the second preset condition includes: the decibel of sound channel signal within the scope of the first decibel threshold.
Wherein, sound channel signal includes left channel signals and right-channel signals.
In step s 2 when carrying out the test of total harmonic distortion plus noise, the decibel of L channel and right channel is carried out respectively
Judgement；It is considered as test crash if the decibel of L channel and right channel has at least one not meet threshold range and executes step S7.
S3. the control terminal carries out crosstalk test to the Devices to test, judges whether the sound channel signal of output meets the
Three preset conditions, if so, executing step S4；If it is not, executing step S7；
Further, the step S3 includes:
The control terminal carries out crosstalk test by test lead device under test, and the control terminal controls the Devices to test
The audio of third predeterminated frequency is played, the test lead acquires the sound channel signal of the Devices to test output, judges sound channel signal
Whether third preset condition is accorded with；
Third preset condition includes:
L channel to right channel decibel whether within the scope of the second decibel threshold；
Right channel to L channel decibel whether within the scope of third decibel threshold.
In step s3 when carrying out crosstalk test, if the decibel of L channel and right channel has at least one not meet threshold value
Range is then considered as test crash and executes step S7.
S4. the control terminal carries out amplitude-frequency response test to the Devices to test, judges whether the sound channel signal of output accords with
The 4th preset condition is closed, if so, executing step S5；If it is not, executing step S7；
Further, the step S4 includes:
The control terminal carries out amplitude-frequency response test by test lead device under test, and the control terminal control is described to be measured
The audio of the 4th predeterminated frequency of device plays, the test lead acquire the sound channel signal of the Devices to test output, judge sound channel
Whether signal accords with the 4th preset condition；
4th preset condition includes:
Whether the maximum decibel of sound channel signal is within the scope of the 4th decibel threshold；
Whether the minimum decibel of sound channel signal is within the scope of the 5th decibel threshold.
In step s 4 when carrying out amplitude-frequency response test, the maximum decibel of L channel and right channel is sentenced respectively
It is disconnected；It is considered as test crash if the maximum decibel of L channel and right channel has at least one not meet threshold range and executes step
S7。
S5. the control terminal carries out phase difference to the Devices to test and level difference is tested, and judges the sound channel signal of output
Whether fiveth preset condition is met, if so, executing step S6；If it is not, executing step S7；
Further, the step S5 includes:
The control terminal carries out phase difference by test lead device under test and level difference test, the control terminal control institute
The audio that Devices to test plays the 5th predeterminated frequency is stated, the test lead acquires the sound channel signal of the Devices to test output, sentences
Whether disconnected sound channel signal accords with the 5th preset condition；
5th preset condition includes:
When carrying out phase difference test, whether the phase difference between L channel and right channel is within the scope of preset difference value；
When carrying out level difference test, whether the decibel difference between L channel and right channel is in the 6th decibel threshold range
It is interior.
If having at least one test crash in phase difference test and level difference test in step s 5, it is considered as test crash
Execute step S7.
S6. the control terminal carries out noise than test to the Devices to test, identifies whether the sound channel signal of output meets
6th preset condition executes step S7；
Further, the step S6 includes:
The control terminal carries out noise than test by test lead device under test, and control terminal control is described to be measured to be set
The standby audio for playing the 6th predeterminated frequency, the test lead acquire the sound channel signal of the Devices to test output, judge that sound channel is believed
Number whether accord with the 6th preset condition；
6th preset condition includes:
Whether the noise decibel of L channel is in default first noise decibel range；
Whether the noise of L channel is than in default first noise comparing range；
Whether the noise decibel of right channel is in default second noise decibel range；
Whether the noise of right channel is than in default second noise comparing range.
If noise decibel or the noise ratio of at least one sound channel do not meet corresponding range in step s 6, it is considered as test
Failure is considered as power amplifier test if all tests pass through and passes through, and the speech identifying function of Devices to test operates normally.
S7. generating test result terminates.
Specifically, test result can be imported in test template in the step s 7, generates test result, record test waves
Document format can be used in shape, the test result.
It should be understood that Devices to test, which can be smart television, Intelligent set top box, intelligent sound box etc., needs voice control
Electronic product.
In the present embodiment, it is successively carried out, is checked according to test order using control terminal control test lead device under test
Whether the power amplifier of Devices to test is normal, so that the speech identifying function normal operation for Devices to test provides safeguard, it can be quickly quasi-
The abort situation of true positioning Devices to test, improves detection effect, avoids debugging repeatedly, save time and cost, avoid providing
Source waste.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (9)
1. a kind of test method of power amplifier, it is characterised in that: Devices to test is connect with control terminal and test lead respectively, the control
End is connect with the test lead；The control terminal controls the test lead and tests the Devices to test；The test side
Method includes the following steps:
S1. the control terminal carries out sound channel test to the Devices to test, and it is pre- to judge whether the sound channel signal of output meets first
If condition, if so, executing step S2；If it is not, executing step S7；
S2. the control terminal carries out the test of total harmonic distortion plus noise to the Devices to test, judges that the sound channel signal of output is
It is no to meet the second preset condition, if so, executing step S3；If it is not, executing step S7；
S3. the control terminal carries out crosstalk test to the Devices to test, and it is pre- to judge whether the sound channel signal of output meets third
If condition, if so, executing step S4；If it is not, executing step S7；
S4. the control terminal carries out amplitude-frequency response test to the Devices to test, judges whether the sound channel signal of output meets the
Four preset conditions, if so, executing step S5；If it is not, executing step S7；
S5. the control terminal carries out phase difference to the Devices to test and level difference is tested, and whether judges the sound channel signal exported
Meet the 5th preset condition, if so, executing step S6；If it is not, executing step S7；
S6. the control terminal carries out noise than test to the Devices to test, identifies whether the sound channel signal of output meets the 6th
Preset condition executes step S7；
S7. generating test result terminates.
2. the test method of power amplifier according to claim 1, it is characterised in that: the Devices to test is adopted with the test lead
It is connected with bluetooth approach；
The control terminal is used to send Devices to test output audio signal described in audio frequency control to the Devices to test；
The control terminal is also used to control the test lead and tests the Devices to test.
3. the test method of power amplifier according to claim 1, it is characterised in that: in the step S1, the control terminal pair
The Devices to test carries out sound channel test, judges whether the sound channel signal of output meets the first preset condition, comprising:
The control terminal carries out sound channel test by test lead device under test, and the control terminal controls the Devices to test and plays
The audio of first predeterminated frequency, and by the Devices to test output volume adjusting to volume threshold, described in the test lead acquisition
The sound channel signal of Devices to test output, judges whether sound channel signal accords with the first preset condition；
First preset condition includes:
Whether the voltage value of sound channel signal is within the scope of voltage threshold；
Whether the power of sound channel signal is within the scope of power threshold.
4. the test method of power amplifier according to claim 1, it is characterised in that: in the step S2, the control terminal pair
The Devices to test carries out the test of total harmonic distortion plus noise, judges whether the sound channel signal of output meets the second preset condition,
Include:
The control terminal carries out the test of total harmonic distortion plus noise by test lead device under test, described in control terminal control
Devices to test plays the audio of the second predeterminated frequency, and the test lead acquires the sound channel signal of the Devices to test output, judgement
Whether sound channel signal accords with the second preset condition；
Whether the second preset condition includes: the decibel of sound channel signal within the scope of the first decibel threshold.
5. the test method of power amplifier according to claim 1, it is characterised in that: in the step S3, the control terminal pair
The Devices to test carries out crosstalk test, judges whether the sound channel signal of output meets third preset condition, comprising:
The control terminal carries out crosstalk test by test lead device under test, and the control terminal controls the Devices to test and plays
The audio of third predeterminated frequency, the test lead acquire the sound channel signal of the Devices to test output, whether judge sound channel signal
Accord with third preset condition；
Third preset condition includes:
L channel to right channel decibel whether within the scope of the second decibel threshold；
Right channel to L channel decibel whether within the scope of third decibel threshold.
6. the test method of power amplifier according to claim 1, it is characterised in that: in the step S4, the control terminal pair
The Devices to test carries out amplitude-frequency response test, judges whether the sound channel signal of output meets the 4th preset condition, comprising:
The control terminal carries out amplitude-frequency response test by test lead device under test, and the control terminal controls the Devices to test
The audio of the 4th predeterminated frequency is played, the test lead acquires the sound channel signal of the Devices to test output, judges sound channel signal
Whether fourth preset condition is accorded with；
4th preset condition includes:
Whether the maximum decibel of sound channel signal is within the scope of the 4th decibel threshold；
Whether the minimum decibel of sound channel signal is within the scope of the 5th decibel threshold.
7. the test method of power amplifier according to claim 1, it is characterised in that: in the step S5, the control terminal pair
The Devices to test carries out phase difference and level difference test, judges whether the sound channel signal of output meets the 5th preset condition, wraps
It includes:
The control terminal carries out phase difference and level difference test by test lead device under test, control terminal control it is described to
Measurement equipment plays the audio of the 5th predeterminated frequency, and the test lead acquires the sound channel signal of the Devices to test output, judges sound
Whether road signal accords with the 5th preset condition；
5th preset condition includes:
When carrying out phase difference test, whether the phase difference between L channel and right channel is within the scope of preset difference value；
When carrying out level difference test, whether the decibel difference between L channel and right channel is within the scope of the 6th decibel threshold.
8. the test method of power amplifier according to claim 1, it is characterised in that: in the step S6, the control terminal pair
The Devices to test carries out noise than test, identifies whether the sound channel signal of output meets the 6th preset condition, comprising:
The control terminal carries out noise than test by test lead device under test, and the control terminal controls the Devices to test and broadcasts
The audio of the 6th predeterminated frequency is put, the test lead acquires the sound channel signal of the Devices to test output, judges that sound channel signal is
The 6th preset condition of no symbol；
6th preset condition includes:
Whether the noise decibel of L channel is in default first noise decibel range；
Whether the noise of L channel is than in default first noise comparing range；
Whether the noise decibel of right channel is in default second noise decibel range；
Whether the noise of right channel is than in default second noise comparing range.
9. the test method of power amplifier according to claim 1, it is characterised in that: in the step S7, generate test knot
Fruit terminates, comprising:
Test result is imported in test template, test result is generated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441346.8A CN110099350A (en) | 2019-05-24 | 2019-05-24 | The test method of power amplifier |
| PCT/CN2020/091113 WO2020238702A1 (en) | 2019-05-24 | 2020-05-19 | Method for testing power amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441346.8A CN110099350A (en) | 2019-05-24 | 2019-05-24 | The test method of power amplifier |
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| WO2020238702A1 (en) * | 2019-05-24 | 2020-12-03 | 晶晨半导体(上海)股份有限公司 | Method for testing power amplifier |
| CN110913323A (en) * | 2019-11-30 | 2020-03-24 | 航天科技控股集团股份有限公司 | Method for detecting heat dissipation performance of vehicle-mounted power amplifier |
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| WO2020238702A1 (en) | 2020-12-03 |
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