CN105188008B - A kind of method and device of testing audio output unit - Google Patents
A kind of method and device of testing audio output unit Download PDFInfo
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- CN105188008B CN105188008B CN201510353629.9A CN201510353629A CN105188008B CN 105188008 B CN105188008 B CN 105188008B CN 201510353629 A CN201510353629 A CN 201510353629A CN 105188008 B CN105188008 B CN 105188008B
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Abstract
The embodiment of the invention discloses a kind of method and devices of testing audio output unit.This method includes：The audio output unit controlled in mobile terminal plays preset audio signal, and controls the audio input unit in mobile terminal and record the audio signal played；The audio signal of recording is handled, the spectrum information of the audio signal of the recording is obtained；The spectrum information is matched, the frequency spectrum grade belonging to the spectrum information is obtained, the frequency spectrum grade as the audio output unit.This method is participated in without artificial, is saved manpower, is effectively increased the testing efficiency of audio frequency apparatus, and test result is not interfered by artificial subjective judgement, and evaluation result is accurate, and reliability is high.
Description
Technical field
The present invention relates to audio output unit detection field more particularly to a kind of methods and dress of testing audio output unit
It sets.
Background technology
With popularizing for smart mobile phone, for using smart mobile phone to be become more and more popular to listen to music.Using intelligence
When energy mobile phone listens to music, the requirement to sound quality is also higher and higher.The quality of the audio output device of mobile phone has sound quality extremely strong
Influence, it is therefore desirable to the audio output device of mobile phone is detected accordingly, it is ensured that the matter of the audio output device of mobile phone
Amount.
Currently, general audio frequency apparatus is for sound and the preservation that the test method of sound quality is all by recording a period of time
For audio file, audio file is then played, using manually evaluating the audio of output, is completed to audio frequency apparatus sound quality
Test.But this test method for audio needs the subjective judgement of user, accuracy is not high, cannot be objective to audio
The sound quality of equipment makes evaluation, and needs a large amount of human cost.
Invention content
In view of this, the embodiment of the present invention proposes a kind of method and device of testing audio output unit, to simplify to sound
The test process of frequency output unit.
In a first aspect, an embodiment of the present invention provides a kind of method of testing audio output unit, the method includes：
The audio output unit controlled in mobile terminal plays preset audio signal, and controls the audio in mobile terminal
Input unit records the audio signal played；
The audio signal of recording is handled, the spectrum information of the audio signal of the recording is obtained；
The spectrum information is matched, the frequency spectrum grade belonging to the spectrum information is obtained, it is defeated as the audio
Go out the frequency spectrum grade of unit.
On the other hand, the embodiment of the present invention additionally provides a kind of device of testing audio output unit, and described device includes：
Control unit plays preset audio signal for controlling the audio output unit in mobile terminal, and controls shifting
Audio input unit in dynamic terminal records the audio signal played；
Spectrum information acquiring unit is handled for the audio signal to recording, obtains the audio signal of the recording
Spectrum information；
Frequency spectrum grade acquiring unit obtains the frequency belonging to the spectrum information for being matched to the spectrum information
Compose grade, the frequency spectrum grade as the audio output unit.
The preset audio signal that the embodiment of the present invention is exported by recording audio output unit, by the audio of the recording
Signal is converted to spectrum information, and is compared with preset spectral range, determines the grade of the audio output unit.The party
Method is participated in without artificial, is saved manpower, is effectively increased the testing efficiency of audio frequency apparatus, and test result is not artificially led
The interference judged is seen, evaluation result is accurate, and reliability is high.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the flow chart of the method for the testing audio output unit that first embodiment of the invention provides；
Fig. 2 is the flow chart of the method for the testing audio output unit that second embodiment of the invention provides；
Fig. 3 is the flow chart of the method for the testing audio output unit that third embodiment of the invention provides；
Fig. 4 is the structural schematic diagram of the device for the testing audio output unit that fourth embodiment of the invention provides.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is only used for explaining the present invention rather than limitation of the invention.It also should be noted that for the ease of
Description, only some but not all contents related to the present invention are shown in the drawings.
Fig. 1 shows the first embodiment of the present invention.
Fig. 1 is a kind of flow diagram of the method for testing audio output unit that first embodiment of the invention provides.This
The method of embodiment can be executed by the device of testing audio output unit, which can pass through the side of software and/or hardware
Formula is realized, is set to inside mobile terminal.
Referring to Fig. 1, the method for the testing audio output unit, including：
Step S101, the audio output unit controlled in mobile terminal play preset audio signal, and control mobile whole
Audio input unit in end records the audio signal played.
In the present embodiment, audio output unit can be loud speaker, and controlling loudspeaker played pre-recorded is simultaneously stored in shifting
Audio file in dynamic terminal.The audio file can fully show the audible spectrum feature of sound, such as should include height
Each frequency ranges such as audio section, middle bass frequency range and bass frequency range, can reflect the performance of loud speaker comprehensively.
While starting to play preset audio signal, the audio input unit such as microphone of mobile terminal, recording is raised
The audio signal that sound device is played.The audio signal is the electric signal received by microphone.Before being recorded, need
The relevant parameter of microphone and loud speaker is configured, to avoid in recording audio signal process due to being lost caused by overload
True phenomenon.
Step S102 handles the audio signal of recording, obtains the spectrum information of the audio signal of the recording.
Frequency spectrum is the abbreviation of frequency spectral density, be the distribution curve of frequency, in particular to by the amplitude of resonance oscillation by frequency
The figure of arrangement is known as frequency spectrum.Frequency spectrum guides to frequency domain to the research of signal from time domain, audio signal can be made to have more intuitively aobvious
Show.It is handled accordingly by the audio signal to recording, makes the audio-frequency information that can carry out frequency spectrum conversion.It determines
Audio signal is handled by Fourier transformation, gets the spectrum information of the audio signal by suitable sampled point.
Step S103 matches the spectrum information, the frequency spectrum grade belonging to the spectrum information is obtained, as institute
State the frequency spectrum grade of audio output unit.
Optionally, it is described the spectrum information is matched before, further include：It establishes and stores preset multiple frequency spectrums
Mapping relations between range and preset multiple frequency spectrum grades.For example, excellent, good, qualified, poor four frequency spectrum grades are preset with, and
Each frequency spectrum grade corresponds to a spectral range.Illustratively, the spectrum information for obtaining step S102 with preset
Spectral range when being matched, determine the spectral range belonging to spectrum information, and by the corresponding frequency spectrum grade of the spectral range
Frequency spectrum grade as audio output unit.
The audio signal that the embodiment of the present invention is exported by recording audio output unit, and the audio signal of recording is converted
For spectrum information, spectrum information is compared with preset spectral range, determines the frequency spectrum grade belonging to audio output unit.
This method operates simplicity and clarity, is participated in without artificial, saves manpower, effectively increase the testing efficiency of audio frequency apparatus, and
Test result is not interfered by artificial subjective judgement, and evaluation result is accurate, and reliability is high.
In addition, in the present embodiment step S102, the audio electrical signal of the recording can be first converted to corresponding number
Word signal, when recording, the frequency and amplitude of acquired electric current are corresponding with the frequency of sound and amplitude, are a kind of analog signals,
Analog signal can be switched into digital signal by existing A/D conversion modules.In the present embodiment, pass through A/D conversion modules
After being sampled, quantified and being encoded to electric signal, corresponding audio digital signals are generated.And the audio digital signals are saved as
The audio file of wav formats, the audio file of wav formats are to facilitate subsequent frequency spectrum conversion behaviour without compression original audio data
Make.
Fig. 2 shows the second embodiment of the present invention.
Fig. 2 is the flow chart of the method for the testing audio output unit that second embodiment of the invention provides.The test
The method of audio output unit is based on first embodiment of the invention, and further, the audio input unit includes that master is defeated
Enter unit and time input unit, and the audio signal that described pair is recorded is handled, obtains the audio signal of the recording
Spectrum information, advanced optimize for：The noise audio signal recorded according to the secondary input unit records the primary input unit
The audio signal of system carries out denoising；Obtain the spectrum information of the audio signal after denoising.
Referring to Fig. 2, the method for the testing audio output unit includes：
Step S201, the audio output unit controlled in mobile terminal play preset audio signal, and control mobile whole
Audio primary input unit in end records played audio signal.
The mobile terminal can be provided with more than one audio input unit, and optionally, audio input unit includes
Primary input unit and time input unit.In the present embodiment, the primary input unit is microphone, control microphone recording audio output
The audio signal that unit is played.
Step S202, the audio time input unit controlled in mobile terminal record noise audio signal.
Due to the environment influence in recording audio signal, the audio signal recorded will include some noises, if noise
It is larger, it can influence subsequently to obtain the accuracy of the frequency spectrum grade belonging to the spectrum information, so needing the audio to being recorded
Signal carries out noise reduction process.In the present embodiment, the secondary input unit be located at the mobile terminal apart from loud speaker compared with
Remote position starts simultaneously at primary input unit and terminates to record, for recording the noise of external environment.
Step S203, the master that the noise audio signal according to the secondary input unit recording records the primary input unit
Audio signal carries out denoising.
Since the audio signal that the noise audio signal that secondary input unit is recorded is recorded with the primary input unit is same
When record, using the characteristic, influence that can be with abating noises to audio signal realizes that the denoising to audio signal is imitated
Fruit.For example, following method, which may be used, realizes that denoising, system are believed the noise by secondary input unit acquisition noise signal
Noise reduction signal is obtained after number reversed, and the noise reduction signal be superimposed with audio signal, since primary input unit is inputted with secondary
Cell distance is closer, is similar to zero relative to velocity of sound.The noise reduction signal and travel to the noise signal at primary input unit
Opposite in phase, amplitude are identical.If intensity of the noise signal in sound channel is cancelled, noise is cut down.
Step S204 handles the audio signal after denoising, obtains the frequency of the audio signal of the recording
Spectrum information.
Step S205 matches the spectrum information, the frequency spectrum grade belonging to the spectrum information is obtained, as institute
State the frequency spectrum grade of audio output unit.
The embodiment of the present invention is by the noise audio signal according to the secondary input unit recording to the primary input unit
The audio signal of recording carries out denoising；The spectrum information for obtaining the audio signal after denoising, reduces the external world
Interference of the environment to the audio signal of recording so that the spectrum information being converted to according to the audio signal of acquisition is more accurate.
Fig. 3 shows the third embodiment of the present invention.
Fig. 3 is the flow chart of the method for the testing audio output unit that third embodiment of the invention provides.The test
The method of audio output unit is based on first embodiment of the invention, further, is matched to the spectrum information,
The frequency spectrum grade belonging to the spectrum information is obtained, after the frequency spectrum grade of the audio output unit, increases following step
Suddenly：Control the frequency spectrum grade of audio output unit described in the screen display of mobile terminal.
Referring to Fig. 3, the method for the testing audio output unit includes：
Step S301, the audio output unit controlled in mobile terminal play preset audio signal, and control mobile whole
Audio input unit in end records the audio signal played.
Step S302 handles the audio signal of recording, obtains the spectrum information of the audio signal of the recording.
Step S303 matches the spectrum information, the frequency spectrum grade belonging to the spectrum information is obtained, as institute
State the frequency spectrum grade of audio output unit.
Step S304 controls the frequency spectrum grade of audio output unit described in the screen display of mobile terminal.
The frequency spectrum grade that the audio output unit can be determined by step S303, by the frequency spectrum of the audio output unit
Grade is shown on the screen of the mobile terminal, and corresponding word or image may be used in the form of textbox or frames images by institute
The frequency spectrum grade for stating audio output unit is shown in the textbox or frames images of mobile terminal screen.For example, step S303 is true
The frequency spectrum grade of the fixed audio output unit be it is high-grade, can popup text frame on the screen of the mobile terminal, textbox
The word content of interior display " when the frequency spectrum grade of aforementioned audio output unit is height ", is checked for testing staff.
The embodiment of the present invention is matched to the spectrum information, obtains the frequency spectrum grade belonging to the spectrum information,
After the frequency spectrum grade of the audio output unit, increase following steps：Control sound described in the screen display of mobile terminal
The frequency spectrum grade of frequency output unit.The frequency spectrum grade of the audio output unit described in the screen display of mobile terminal, for inspection
Survey personnel check, distinguish the mobile terminal of different grades of audio output unit in time.Without external other display equipment, save
Testing cost.
Fig. 4 shows the fourth embodiment of the present invention.
Fig. 4 is the structural schematic diagram of the device for the testing audio output unit that fourth embodiment of the invention provides.Referring to figure
4, the device of the testing audio output unit includes：Control unit 410, spectrum information acquiring unit 420 and frequency spectrum grade obtain
Take unit 430.
Wherein, described control unit 410 is used to control the audio output unit in mobile terminal and plays preset audio letter
Number, and control the audio input unit in mobile terminal and record the audio signal played；
The spectrum information acquiring unit 420 obtains the sound of the recording for handling the audio signal of recording
The spectrum information of frequency signal；
The frequency spectrum grade acquiring unit 430 obtains the spectrum information institute for being matched to the spectrum information
The frequency spectrum grade of category, the frequency spectrum grade as the audio output unit.
The preset audio signal that the embodiment of the present invention is exported by recording audio output unit, and by the sound of the recording
Frequency signal is converted to frequency spectrum conversion, and is compared with preset frequency spectrum, determines the grade of the audio output unit.Step letter
Ming and Qing Chu participates in without artificial, saves manpower, effectively increase the testing efficiency of audio frequency apparatus.And test result not by
The interference of artificial subjective judgement, evaluation result is accurate, and reliability is high.
Further, the spectrum information acquiring unit 420, including denoising subelement 421 and spectrum information obtain
Subelement 422.
Wherein, the denoising subelement 421, the noise audio signal pair for being recorded according to the secondary input unit
The audio signal that the primary input unit is recorded carries out denoising；
The spectrum information obtains subelement 422, the spectrum information for obtaining the audio signal after denoising.
Further, the spectrum information acquiring unit 420 further includes 423 sum number of digital audio and video signals transforming subunit
Word spectrum information obtains subelement 424.
Wherein, the digital audio and video signals transforming subunit 423 is for converting the audio signal after denoising to
Digital audio signal；
The digital spectrum acquisition of information subelement 424 is used to obtain the spectrum information of the digital audio signal.
Further, described device further includes：Mapping relations establish unit 440.
The mapping relations establish unit 4404 for establish and store preset multiple spectral ranges with it is preset multiple
Mapping relations between frequency spectrum grade.
Further, the device further includes：Frequency spectrum grade display unit 450.
The frequency spectrum grade display unit 450 is used to control the frequency of audio output unit described in the screen display of mobile terminal
Compose grade.
The device of above-mentioned testing audio output unit can perform the side for the audio output unit that the embodiment of the present invention is provided
Method has the corresponding function module of execution method and advantageous effect.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
Will be appreciated by those skilled in the art that each module of the above invention or each step can use general meter
Device is calculated to realize, they can be concentrated on single computing device, or be distributed in network constituted by multiple computing devices
On, optionally, they can be realized with the program code that computer installation can perform, so as to be stored in storage
It is performed by computing device in device, either they are fabricated to each integrated circuit modules or will be more in them
A module or step are fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and
The combination of software.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, just to refer each other for the same or analogous part between each embodiment.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for those skilled in the art
For, the present invention can have various modifications and changes.It is all within spirit and principles of the present invention made by any modification, equivalent
Replace, improve etc., it should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of method of testing audio output unit, which is characterized in that including：
The audio output unit controlled in mobile terminal plays preset audio signal, and controls the audio input in mobile terminal
Unit records the audio signal played, wherein the audio signal includes high audio section, middle bass frequency range and bass frequency range；
The analog audio signal of recording is converted into corresponding digital signal；
The digital signal is saved as to the audio file of wav formats, the audio file of wav formats is without compression original audio number
According to；
The audio signal of recording is handled, the spectrum information of the audio signal of the recording is obtained, wherein frequency spectrum is frequency
Distribution curve, refer to that the amplitude of resonance oscillation is known as frequency spectrum by the figure of frequency permutation；
The spectrum information is matched, the frequency spectrum grade belonging to the spectrum information is obtained, as the audio output list
The frequency spectrum grade of member；
Wherein, it is described the spectrum information is matched before, further include：Establish and store preset multiple spectral ranges with
Mapping relations between preset multiple frequency spectrum grades；Wherein, default frequency spectrum grade includes excellent, good, qualified, poor, and each frequency spectrum
Grade corresponds to a spectral range.
2. according to the method described in claim 1, it is characterized in that, the audio input unit includes primary input unit and time defeated
Enter unit,
The audio signal of described pair of recording is handled, and obtains the spectrum information of the audio signal of the recording, including：
The noise audio signal recorded according to the secondary input unit carries out the audio signal that the primary input unit is recorded
Denoising；
Obtain the spectrum information of the audio signal after denoising.
3. according to the method described in claim 1, it is characterized in that, matched to the spectrum information, the frequency spectrum is obtained
Frequency spectrum grade belonging to information further includes after the frequency spectrum grade of the audio output unit：
Control the frequency spectrum grade of audio output unit described in the screen display of mobile terminal.
4. a kind of device of testing audio output unit, which is characterized in that including：
Control unit plays preset audio signal for controlling the audio output unit in mobile terminal, and controls mobile whole
Audio input unit in end records the audio signal played, wherein the audio signal includes high audio section, middle bass frequency range
With bass frequency range；
The analog audio signal of recording is converted into corresponding digital signal；
The digital signal is saved as to the audio file of wav formats, the audio file of wav formats is without compression original audio number
According to；
Spectrum information acquiring unit is handled for the audio signal to recording, obtains the frequency of the audio signal of the recording
Spectrum information, wherein frequency spectrum is the distribution curve of frequency, refers to that the amplitude of resonance oscillation is known as frequency spectrum by the figure of frequency permutation；
Frequency spectrum grade acquiring unit obtains the frequency spectrum etc. belonging to the spectrum information for being matched to the spectrum information
Grade, the frequency spectrum grade as the audio output unit；
Mapping relations establish unit, for before being matched to the spectrum information, establishing and storing preset multiple frequencies
Mapping relations between spectral limit and preset multiple frequency spectrum grades, wherein default frequency spectrum grade includes excellent, good, qualified, poor, and
Each frequency spectrum grade corresponds to a spectral range.
5. device according to claim 4, which is characterized in that the audio input unit include primary input unit and time
When input unit, the spectrum information acquiring unit, including：
Denoising subelement, the noise audio signal for being recorded according to the secondary input unit record the primary input unit
The audio signal of system carries out denoising；
Spectrum information obtains subelement, the spectrum information for obtaining the audio signal after denoising.
6. device according to claim 4, which is characterized in that the device further includes：
Frequency spectrum grade display unit obtains the frequency spectrum belonging to the spectrum information for being matched to the spectrum information
Grade controls audio output list described in the screen display of mobile terminal after the frequency spectrum grade of the audio output unit
The frequency spectrum grade of member.
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| CN108854062B (en) * | 2018-06-24 | 2019-08-09 | 广州银汉科技有限公司 | A kind of voice-enabled chat module of moving game |
| CN109600697A (en) * | 2018-10-15 | 2019-04-09 | 珠海格力电器股份有限公司 | The outer playback matter of terminal determines method and device |
| CN109559757A (en) * | 2018-11-30 | 2019-04-02 | 维沃移动通信有限公司 | A kind of method of canceling noise and mobile terminal |
| CN110503979B (en) * | 2019-08-01 | 2023-11-21 | 腾讯科技（深圳）有限公司 | Audio output effect monitoring method, device, medium and electronic equipment |
| CN111122163A (en) * | 2019-09-19 | 2020-05-08 | 人本集团有限公司 | Bearing fault detection system |
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| JP2001197585A (en) * | 2000-01-14 | 2001-07-19 | Sony Corp | Frequency characteristic adjustment system, acoustic device and frequency characteristic adjustment method |
| CN100554916C (en) * | 2006-04-28 | 2009-10-28 | 孙盈军 | A kind of method of testing of digital product and isolated plant thereof |
| CN101848288A (en) * | 2010-04-19 | 2010-09-29 | 北京东微世纪科技有限公司 | Simulation noise reduction system and method for microphone |
| CN102568470B (en) * | 2012-01-11 | 2013-12-25 | 广州酷狗计算机科技有限公司 | Acoustic fidelity identification method and system for audio files |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |