CN105188008A - Method and device for testing audio output unit - Google Patents
Method and device for testing audio output unit Download PDFInfo
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- CN105188008A CN105188008A CN201510353629.9A CN201510353629A CN105188008A CN 105188008 A CN105188008 A CN 105188008A CN 201510353629 A CN201510353629 A CN 201510353629A CN 105188008 A CN105188008 A CN 105188008A
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Abstract
Embodiments of the invention disclose a method and a device for testing an audio output unit. The method comprises the following steps: making an audio output unit in a mobile terminal play a preset audio signal and making an audio input unit in the mobile terminal record the played audio signal; processing the recorded audio signal to obtain the spectrum information of the recorded audio signal; and carrying out matching for the spectrum information to obtain the spectrum level to which the spectrum information belongs and taking the spectrum level as the spectrum level of the audio output unit. The method needs no manual intervention, and is manpower-saving. The efficiency of audio equipment test is improved effectively, and the test result is not affected by the interference of subjective judgment. The evaluation result is accurate, and the reliability is high.
Description
Technical field
The present invention relates to audio output unit detection field, particularly relate to a kind of method and device of testing audio output unit.
Background technology
Along with popularizing of smart mobile phone, music is listened to for use smart mobile phone and becomes more and more universal.When using smart mobile phone to listen to music, also more and more higher to the requirement of tonequality.The product confrontation tonequality of the audio output device of mobile phone has extremely strong impact, therefore needs to detect accordingly the audio output device of mobile phone, guarantees the quality of the audio output device of mobile phone.
At present, general audio frequency apparatus is all sound by recording a period of time for the method for testing of tonequality and saves as audio file, then displaying audio file, utilizes and manually evaluates the audio frequency exported, complete the test to audio frequency apparatus tonequality.But this method of testing for audio frequency needs the subjective judgement of user, accuracy is not high, the objective tonequality to audio frequency apparatus can not make evaluation, and need a large amount of human costs.
Summary of the invention
In view of this, the embodiment of the present invention proposes a kind of method and device of testing audio output unit, to simplify the test process to audio output unit.
First aspect, embodiments provide a kind of method of testing audio output unit, described method comprises:
The audio output unit controlled in mobile terminal plays the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play;
The audio signal recorded is processed, obtains the spectrum information of the audio signal of described recording;
Described spectrum information is mated, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output 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 comprises:
Control unit, plays for the audio output unit controlled in mobile terminal the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play;
Spectrum information acquiring unit, for processing the audio signal recorded, obtains the spectrum information of the audio signal of described recording;
Frequency spectrum grade acquiring unit, for mating described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
The preset audio signal that the embodiment of the present invention is exported by recording audio output unit, is converted to spectrum information by the audio signal of described recording, and compares with the spectral range preset, and determines the grade of described audio output unit.The method, without the need to artificial participation, saves manpower, effectively improves the testing efficiency of audio frequency apparatus, and test result is not by the interference of artificial subjective judgement, and evaluation result is accurate, and reliability is high.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
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 representation of the device of the testing audio output unit that fourth embodiment of the invention provides.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Fig. 1 illustrates the first embodiment of the present invention.
Fig. 1 is the schematic flow sheet of the method for a kind of testing audio output unit that first embodiment of the invention provides.The method of the present embodiment can be performed by the device of testing audio output unit, and this device realizes by the mode of software and/or hardware, is arranged at mobile terminal inside.
See Fig. 1, the method for described testing audio output unit, comprising:
Step S101, the audio output unit controlled in mobile terminal plays the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play.
In the present embodiment, audio output unit can be loud speaker, control loudspeaker played pre-recorded the audio file be stored in mobile terminal.Described audio file fully can show the audible spectrum feature of sound, such as, should comprise each frequency ranges such as high pitch frequency range, middle bass frequency range and bass frequency range, can reflect the performance of loud speaker comprehensively.
While starting to play default audio signal, the audio input unit such as microphone of mobile terminal, records the audio signal that loud speaker is play.The signal of telecommunication of described audio signal received by microphone.Before recording, need the relevant parameter of microphone and loud speaker to arrange, thus avoid in recording audio signal process owing to transshipping the distortion phenomenon caused.
Step S102, processes the audio signal recorded, obtains the spectrum information of the audio signal of described recording.
Frequency spectrum is the abbreviation of frequency spectral density, is the distribution curve of frequency, specifically refers to and the amplitude of resonance oscillation is called frequency spectrum by the figure of frequency permutation.The research of frequency spectrum to signal guides to frequency domain from time domain, and audio signal can be made to have more intuitive display.By processing accordingly the audio signal recorded, make it to become the audio-frequency information that can carry out spectral conversion.Determine suitable sampled point, by Fourier transform, audio signal is processed, get the spectrum information of this audio signal.
Step S103, mates described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
Optionally, described described spectrum information is mated before, also comprise: set up and store the mapping relations of the multiple spectral range preset and the inter-stages such as multiple frequency spectrums preset.Such as, be preset with excellent, good, qualified, differ from four frequency spectrum grades, and all corresponding spectral range of each frequency spectrum grade.Exemplary, when the spectrum information obtained by step S102 mates with the spectral range preset, determine the spectral range belonging to spectrum information, and using the frequency spectrum grade of frequency spectrum grade corresponding for this spectral range 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 to spectrum information, spectrum information and the spectral range preset are compared, determines the frequency spectrum grade belonging to audio output unit.The method operation is concisely clear, without the need to artificial participation, saves manpower, effectively improves the testing efficiency of audio frequency apparatus, and test result is not by the interference of 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 described recording first can be converted to corresponding digital signal, when recording obtain electric current the frequency of frequency and amplitude and sound and amplitude corresponding, be a kind of analog signal, analog signal can be transferred to digital signal by existing A/D modular converter.In the present embodiment, after the signal of telecommunication being sampled by A/D modular converter, quantize and encodes, corresponding audio digital signals is generated.And described audio digital signals being saved as the audio file of wav form, the audio file of wav form is without compression original audio data, facilitates follow-up spectral conversion operation.
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 method of described testing audio output unit is based on first embodiment of the invention, further, described audio input unit comprises primary input unit and time input unit, and the described audio signal to recording is processed, obtain the spectrum information of the audio signal of described recording, be optimized for further: the noise audio signal according to described input unit recording carries out denoising to the audio signal that described primary input unit is recorded; Obtain the spectrum information of the audio signal after denoising.
See Fig. 2, the method for described testing audio output unit comprises:
Step S201, the audio output unit controlled in mobile terminal plays the audio signal preset, and the audio frequency primary input unit controlled in mobile terminal records the audio signal play.
Described mobile terminal can be provided with a more than audio input unit, and optionally, audio input unit comprises primary input unit and time input unit.In the present embodiment, described primary input unit is microphone, controls the audio signal that microphone recording audio output unit is play.
Step S202, the audio frequency time input unit controlled in mobile terminal records noise audio signal.
Due to the environmental impact at recording audio signal, the audio signal recorded can comprise some noises, if noise is comparatively large, the accuracy of the frequency spectrum grade belonging to the described spectrum information of follow-up acquisition can be affected, so need to carry out noise reduction process to recorded audio signal.In the present embodiment, the position that the distance loud speaker that described input unit is located at described mobile terminal is far away, starts with primary input unit simultaneously and terminates to record, and is used for recording the noise of external environment.
Step S203, the noise audio signal according to described input unit recording carries out denoising to the audio signal that described primary input unit is recorded.
The audio signal that the noise audio signal recorded due to secondary input unit and described primary input unit are recorded is recorded simultaneously, utilizes this characteristic, can abating noises on the impact of audio signal, realize the denoising effect to audio signal.Such as, can adopt and realize denoising with the following method, system is by time input unit acquisition noise signal, described noise signal is oppositely obtained noise reduction signal afterwards, and described noise reduction signal is superposed with audio signal, due to primary input unit and time input unit close together, be similar to zero relative to velocity of sound.Described noise reduction signal is contrary with the noise signal phase place propagating into primary input unit place, amplitude is identical.As the intensity of noise signal in sound channel is cancelled, noise is cut down.
Step S204, processes the audio signal after denoising, obtains the spectrum information of the audio signal of described recording.
Step S205, mates described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
The embodiment of the present invention is by carrying out denoising according to the noise audio signal of described input unit recording to the audio signal that described primary input unit is recorded; Obtain the spectrum information of the audio signal after denoising, decrease the interference of external environment to the audio signal recorded, make the spectrum information that is converted to according to the audio signal obtained 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 method of described testing audio output unit is based on first embodiment of the invention, further, described spectrum information is being mated, obtain the frequency spectrum grade belonging to described spectrum information, after frequency spectrum grade as described audio output unit, increase following steps: the frequency spectrum grade of audio output unit described in the screen display of control mobile terminal.
See Fig. 3, the method for described testing audio output unit comprises:
Step S301, the audio output unit controlled in mobile terminal plays the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play.
Step S302, processes the audio signal recorded, obtains the spectrum information of the audio signal of described recording.
Step S303, mates described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
Step S304, the frequency spectrum grade of audio output unit described in the screen display of control mobile terminal.
The frequency spectrum grade of described audio output unit can be determined by step S303, by the display of the frequency spectrum grade of described audio output unit on the screen of the mobile terminal, in the textbox that corresponding word or image can be adopted the frequency spectrum grade of described audio output unit to be presented at mobile terminal screen with the form of textbox or frames images or frames images.Such as, step S303 determines that the frequency spectrum grade of described audio output unit is high-grade, can popup text frame on the screen of the mobile terminal, the word content of display in textbox " when the frequency spectrum grade of aforementioned audio output unit be height ", checks for testing staff.
The embodiment of the present invention is being mated described spectrum information, obtain the frequency spectrum grade belonging to described spectrum information, after frequency spectrum grade as described audio output unit, increase following steps: the frequency spectrum grade of audio output unit described in the screen display of control mobile terminal.In the frequency spectrum grade of audio output unit described in the screen display of mobile terminal, can check for testing staff, distinguish the mobile terminal of the audio output unit of different brackets in time.Without the need to external other display equipment, save testing cost.
Fig. 4 shows the fourth embodiment of the present invention.
Fig. 4 is the structural representation of the device of the testing audio output unit that fourth embodiment of the invention provides.See Fig. 4, the device of described testing audio output unit comprises: control unit 410, spectrum information acquiring unit 420 and frequency spectrum grade acquiring unit 430.
Wherein, described control unit 410 plays for the audio output unit controlled in mobile terminal the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play;
Described spectrum information acquiring unit 420, for processing the audio signal recorded, obtains the spectrum information of the audio signal of described recording;
Described frequency spectrum grade acquiring unit 430, for mating described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
The preset audio signal that the embodiment of the present invention is exported by recording audio output unit, and the audio signal of described recording is converted to spectral conversion, and compare with the frequency spectrum preset, determine the grade of described audio output unit.Step is concisely clear, without the need to artificial participation, saves manpower, effectively improves the testing efficiency of audio frequency apparatus.And test result is not by the interference of artificial subjective judgement, and evaluation result is accurate, and reliability is high.
Further, described spectrum information acquiring unit 420, comprises denoising subelement 421 and spectrum information obtains subelement 422.
Wherein, described denoising subelement 421, for carrying out denoising according to the noise audio signal of described input unit recording to the audio signal that described primary input unit is recorded;
Described spectrum information obtains subelement 422, for obtaining the spectrum information of the audio signal after denoising.
Further, described spectrum information acquiring unit 420, also comprises digital audio and video signals transformant unit 423 and digital spectrum acquisition of information subelement 424.
Wherein, described digital audio and video signals transformant unit 423 is for being converted into digital audio signal by the audio signal after denoising;
Described digital spectrum acquisition of information subelement 424 is for obtaining the spectrum information of described digital audio signal.
Further, described device also comprises: mapping relations set up unit 440.
Described mapping relations set up unit 4404 for setting up and storing the mapping relations of the multiple spectral range preset and the inter-stages such as multiple frequency spectrums preset.
Further, described device also comprises: frequency spectrum grade display unit 450.
Described frequency spectrum grade display unit 450 for control mobile terminal screen display described in the frequency spectrum grade of audio output unit.
The device of above-mentioned testing audio output unit can perform the method for the audio output unit that the embodiment of the present invention provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Those of ordinary skill in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of computer installation, thus they storages can be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to the combination of any specific hardware and software.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, the same or analogous part between each embodiment mutually see.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various change and change.All do within spirit of the present invention and principle any amendment, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method for testing audio output unit, is characterized in that, comprising:
The audio output unit controlled in mobile terminal plays the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play;
The audio signal recorded is processed, obtains the spectrum information of the audio signal of described recording;
Described spectrum information is mated, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
2. method according to claim 1, is characterized in that, described audio input unit comprises primary input unit and time input unit,
The described audio signal to recording processes, and obtains the spectrum information of the audio signal of described recording, comprising:
Noise audio signal according to described input unit recording carries out denoising to the audio signal that described primary input unit is recorded;
Obtain the spectrum information of the audio signal after denoising.
3. method according to claim 2, is characterized in that, the spectrum information of the audio signal after described acquisition denoising, comprising:
Audio signal after denoising is converted into digital audio signal;
Obtain the spectrum information of described digital audio signal.
4. method according to claim 1, is characterized in that, described described spectrum information is mated before, also comprise:
Set up and store the mapping relations of the multiple spectral range preset and the inter-stages such as multiple frequency spectrums preset.
5. method according to claim 1, is characterized in that, mates described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, after the frequency spectrum grade as described audio output unit, also comprises:
The frequency spectrum grade of audio output unit described in the screen display of control mobile terminal.
6. a device for testing audio output unit, is characterized in that, comprising:
Control unit, plays for the audio output unit controlled in mobile terminal the audio signal preset, and the audio input unit controlled in mobile terminal records the audio signal play;
Spectrum information acquiring unit, for processing the audio signal recorded, obtains the spectrum information of the audio signal of described recording;
Frequency spectrum grade acquiring unit, for mating described spectrum information, obtains the frequency spectrum grade belonging to described spectrum information, as the frequency spectrum grade of described audio output unit.
7. device according to claim 6, is characterized in that, when described audio input unit comprises primary input unit and secondary input unit, described spectrum information acquiring unit, comprising:
Denoising subelement, for carrying out denoising according to the noise audio signal of described input unit recording to the audio signal that described primary input unit is recorded;
Spectrum information obtains subelement, for obtaining the spectrum information of the audio signal after denoising.
8. device according to claim 7, is characterized in that, described spectrum information acquiring unit is used for:
Digital audio and video signals transformant unit, for being converted into digital audio signal by the audio signal after denoising;
Digital spectrum acquisition of information subelement, for obtaining the spectrum information of described digital audio signal.
9. device according to claim 6, is characterized in that, described device also comprises:
Mapping relations set up unit, for before mating described spectrum information, set up and store the mapping relations of the multiple spectral range preset and the inter-stages such as multiple frequency spectrums preset.
10. device according to claim 6, is characterized in that, described device also comprises:
Frequency spectrum grade display unit, for mating described spectrum information, obtain the frequency spectrum grade belonging to described spectrum information, after the frequency spectrum grade as described audio output unit, the frequency spectrum grade of audio output unit described in the screen display of control mobile terminal.
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| 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 |
| CN110503979A (en) * | 2019-08-01 | 2019-11-26 | 腾讯科技（深圳）有限公司 | Monitoring method, device, medium and the electronic equipment of audio output effect |
| CN111122163A (en) * | 2019-09-19 | 2020-05-08 | 人本集团有限公司 | Bearing fault detection system |
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| CN111122163A (en) * | 2019-09-19 | 2020-05-08 | 人本集团有限公司 | Bearing fault detection system |
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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. |