CN103179495A - Audio test method and system for earphone microphone and receiver of mobile terminal - Google Patents
Audio test method and system for earphone microphone and receiver of mobile terminal Download PDFInfo
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Abstract
The invention discloses an audio test method for an earphone microphone and a receiver of a mobile terminal. The method comprises that an audio test device sends test audio signals to the mobile terminal by measuring earpieces; the mobile terminal receives the test audio signals through an earphone microphone interface and generates audio signals according to the test audio signals; the receiver of the mobile terminal plays the audio signals; and the audio test device receives the audio signals generated by the mobile terminal and tests an audio channel of the mobile terminal according to the audio signals and the test audio signals. The invention further discloses an audio test system for the earphone microphone and the receiver of the mobile terminal. By means of the audio test method and the system for the earphone microphone and the receiver of the mobile terminal, an input channel of the earphone microphone and an output channel of the receiver of the mobile terminal can be tested; and the test time is short, and the test cost is low.
Description
Technical field
The present invention relates to the audio-frequency test technical field, particularly the audio test system of a kind of ear microphone of mobile terminal and receiver and audio testing method.
Background technology
Now, mobile terminal has become the necessity of people's daily life.In the large-scale production of modernization mobile terminal, in order to guarantee the audio performance of product, audio-frequency test is link necessary in production test.Wherein, the main test purpose of the audio-frequency test in mobile terminal large-scale production is for making quality.Wherein, audio-frequency test comprises the paster quality that detects mainboard and the assembling quality that detects all parts.
The method that traditional mobile terminal large-scale production audio frequency is surveyed comprises following four kinds:
(1) the artificial subjective testing of terminal voice winding.Use path by the terminal software analog subscriber.This method of testing shortcoming is that Stability and veracity is poor.Because artificial test is subjective judgement, and judgement itself there is no fixed standard in, therefore the standard of test may vary with each individual.And artificial measuring stability is poor, the long sense of fatigue brought of mechanical action, and it is unstable that the rotation of changing shifts all can cause testing.
(2) test of the voice pathway under the signaling call model.Set up signaling by the terminal comprehensive tester and call out, the conversation that simulation is real off the net, and realize audio-frequency test by audio-frequency generator and audio analyzer.The shortcoming of this method of testing is that tester is more and path test is also comparatively complicated, and also long testing cost is high to cause the testing time.
(3) recording of terminal audio frequency path or playback test.Realize that by terminal software each voice-frequency channel independently records or playback, and realize the automatic test of audio frequency by audio-frequency test equipment.The shortcoming of this method of testing is to have split path and makes number of passages be multiplied, thereby has increased testing cost, can not carry out real-time testing.
(4) the terminal voice loopback test of band delay.Set up by terminal software the language path that the user uses, and be the realization of audio-frequency test, path is necessarily postponed.The shortcoming of this method of testing is to have added delay, has increased the testing time, has increased testing cost, can not carry out real-time testing.
In addition, in the ear microphone of traditional mobile terminal and the audio-frequency test of receiver, need to test to determine effective range scope to a plurality of tone signals, the testing time be longer.And tester is more, needs to use simultaneously simulation artitificial ear and simulation artificial mouth, causes two sound sources to interfere with each other, and measuring accuracy is low.And the more production cost that also causes of tester strengthens, and is unfavorable for large-scale production.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency.
For this reason, first purpose of the present invention is to provide a kind of ear microphone of mobile terminal and the audio testing method of receiver, and the method can realize the test to the output channel of the input channel of the ear microphone of mobile terminal and receiver.Second purpose of the present invention is to provide a kind of ear microphone of mobile terminal and the audio test system of receiver.
For achieving the above object, the embodiment of first aspect present invention provides a kind of ear microphone of mobile terminal and the audio testing method of receiver, comprise the steps: that audio test device sends to mobile terminal by measuring microphone earphone with test audio signal, and receive described testing audio letter by the ear microphone interface of described mobile terminal, described mobile terminal generates audio signal according to described test audio signal, and plays described audio signal by the receiver of described mobile terminal; Described audio test device receives the described audio signal that described mobile terminal generates; And described audio test device is tested the voice-frequency channel of described mobile terminal according to described audio signal and described test audio signal.
According to the ear microphone of the mobile terminal of the embodiment of the present invention and the audio testing method of receiver, can realize the test to the output channel of the input channel of the ear microphone of mobile terminal and receiver, and adopt the method for acoustoelectric signal intersection winding to carry out in real time audio frequency winding frequency sweep, thereby reduced unnecessary delay, shortened the testing time.In addition, the tester that the present invention adopts is less, thereby has reduced testing cost.
the embodiment of second aspect present invention provides a kind of ear microphone of mobile terminal and the audio test system of receiver, comprise: audio test device and measurement microphone, described audio test device is used for generating test audio signal and described test audio signal being sent to described mobile terminal, and according to the audio signal that receives and described test audio signal, the voice-frequency channel of described mobile terminal is tested, wherein, the described audio signal test audio signal that to be described mobile terminal receive according to the ear microphone interface of described mobile terminal is converted to, and play by the receiver of described mobile terminal, described measurement microphone is used for receiving the described mobile audio signal that sends, and described audio signal is sent to described audio test device.
According to the ear microphone of the mobile terminal of the embodiment of the present invention and the audio test system of receiver, can realize the test to the output channel of the input channel of the ear microphone of mobile terminal and receiver, and adopt the method for acoustoelectric signal intersection winding to carry out in real time audio frequency winding frequency sweep, thereby reduced unnecessary delay, shortened the testing time.In addition, the tester that the present invention adopts is less, thereby has reduced testing cost.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is the FB(flow block) according to the audio testing method of the ear microphone of the mobile terminal of the embodiment of the present invention and receiver;
Fig. 2 is the schematic diagram of the audio test system of the ear microphone of mobile terminal according to an embodiment of the invention and receiver;
Fig. 3 is the schematic diagram according to the audio test device of the embodiment of the present invention; And
Fig. 4 is the schematic diagram of the audio test system of the ear microphone of mobile terminal in accordance with another embodiment of the present invention and receiver.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
With reference to following description and accompanying drawing, these and other aspects of embodiments of the invention will be known.These describe and accompanying drawing in, specifically disclose some specific implementations in embodiments of the invention, represent to implement some modes of the principle of embodiments of the invention, still should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise spirit and interior all changes, modification and the equivalent of intension scope that falls into additional claims.
Describe according to the ear microphone of the mobile terminal of the embodiment of the present invention and the audio testing method of receiver below with reference to Fig. 1.Wherein, mobile terminal comprises receiver, loud speaker, microphone and with the stereophone interface of microphone.
As shown in Figure 1, the ear microphone of the mobile terminal that the embodiment of the present invention provides and the audio testing method of receiver comprise the steps:
Step S101, audio test device sends to mobile terminal by measuring microphone earphone with test audio signal, and receive test audio signal by the ear microphone interface of mobile terminal, mobile terminal generates audio signal according to test audio signal, and by the receiver playing audio signal of mobile terminal.
Audio test device generates test audio signal.Wherein, test audio signal is the audio signal with multi-frequency sequence and several value sequences.Then, audio test device exports this test audio signal to the measurement microphone earphone, further is sent to mobile terminal by measuring microphone earphone by wire.Wherein, the plug of measurement microphone earphone and the ear microphone interface of mobile terminal are suitable, and are connected with audio test device.Thus, the test audio signal of audio test device generation is sent to mobile terminal by the ear microphone interface of measuring microphone earphone plug and mobile terminal.Wherein, audio test device is for supporting the audio-frequency test instrument of multichannel input and output.
In an embodiment of the present invention, the plug of mobile terminal and measurement microphone earphone all is arranged in the audio frequency shielded box.The test audio signal that is generated by audio test device is input in the audio frequency shielded box and outputs in mobile terminal with the form of the signal of telecommunication.
In one embodiment of the invention, measuring microphone earphone is that four joints are with the stereophone of microphone.
Voice modulation demodulator circuit by inside generates audio signal according to test audio signal to mobile terminal with the test audio signal that receives, and further with the receiver of audio signal winding to mobile terminal.The receiver of mobile terminal is play this audio signal, thereby test audio signal is converted to sound wave, and propagate in the space of sound wave in the audio frequency shielded box.
Also be provided with the measurement microphone in the audio frequency shielded box, and measure the position that microphone is arranged on the receiver of close mobile terminal.Utilize to measure microphone and gather the audio signal that receiver is play, and will collect audio signal and send to audio test device.
In one embodiment of the invention, measure microphone and be the simulation artitificial ear.
In yet another embodiment of the present invention,, can first be amplified by the front-located power amplifier device before outputing to audio test device by the audio signal of measuring microphone output.Audio signal after the front-located power amplifier device will amplify is transported to audio test device.Wherein, the measurement microphone is refuted and is connected to the front-located power amplifier device.Audio signal is amplified be conducive to follow-up data analysis, and be difficult for by noise jamming.
Step S102, the audio signal that the audio test device mobile terminal receive generates according to test sound wave.
Audio test device is by measuring the microphone mobile terminal receive according to the audio signal that generates.
Step S103, audio test device is tested the voice-frequency channel of mobile terminal according to audio signal and test audio signal.
Audio test device carries out data sampling to the audio signal that receives, and the rear data of sampling are carried out FFT (Fast Fourier Transformation, fast Fourier) conversion, thereby the frequency of determining audio signal is the frequency of mobile terminal playing.The frequency of the audio signal the determined difference with the frequency of test audio signal is compared with the scope of presetting, so that the input channel of ear microphone and the output channel of receiver are tested.
Within if the difference of the frequency of the frequency of audio signal and test audio signal is positioned at default scope, judge that mobile terminal tests by voice-frequency channel.If the difference of the frequency of the frequency of audio signal and test audio signal is positioned at outside default scope, the voice-frequency channel that judges mobile terminal is obstructed, and namely on the output channel of the input channel of mobile terminal earphone microphone and receiver, the paster quality of device has earphone jack and the receiver fault of problem or assembling.Judge that simultaneously loudness and distortion are whether within acceptable scope.If the loudness of audio signal is too little, assembly failure is described or foreign matters from being blocked has been arranged receiver.If the distortion of audio signal too greatly illustrate that harmonic signal is too loud.Have whister-type noise or cacophonia in conversation, need to do concrete analysis to the fault mobile phone.
By above-mentioned test, can test the following aspects of the output channel of the input channel of the ear microphone of mobile terminal and receiver:
(1) detect the paster quality of device on above-mentioned two paths;
(2) quality of microphone path in the Test earphone microphone jack;
(3) detect the monomer mass of loudspeaker in receiver;
(4) assembling quality of each assembly in detection receiver sound chamber.
According to ear microphone and the receiver audio testing method of the mobile terminal of the embodiment of the present invention, can realize the test to the output channel of the input channel of the ear microphone of mobile terminal and receiver.The input channel of ear microphone and the output channel of receiver are avoided the generation of crosstalking with acoustical signal and the signal of telecommunication combination cross-reference of audio frequency.And adopt the method for acoustoelectric signal intersection winding to carry out in real time audio frequency winding frequency sweep, thereby reduced unnecessary delay, shortened the testing time.In addition, the tester that the present invention adopts is less, thereby has higher stability, and measuring accuracy is higher, testing cost is low, is applicable to large-scale production.
Describe according to the ear microphone of the mobile terminal of the embodiment of the present invention and the audio test system 200 of receiver below with reference to Fig. 2 to Fig. 4.
The ear microphone of the mobile terminal that the embodiment of the present invention provides and the audio test system of receiver 200 comprise audio test device 210 and measure microphone 220.Audio test device 210 is used for generating test audio signal and test audio signal being sent to mobile terminal 230, and according to the audio signal that receives and test audio signal, the voice-frequency channel of mobile terminal 230 is tested, wherein, the audio signal test audio signal that to be mobile terminal 230 receive according to the ear microphone interface of mobile terminal 230 is converted to, and plays by the receiver of mobile terminal 230.Measuring microphone 220 is used for the audio signal of mobile terminal receive 230 transmissions and audio signal is sent to audio test device 210.
As shown in Figure 3, the ear microphone of the mobile terminal of the embodiment of the present invention and the audio test system of receiver 200 also comprise measures microphone earphone 260, be used for receiving the test audio signal from audio test device, and test audio signal further sent to the ear microphone interface of mobile terminal 230 by wire.Wherein, the plug of measurement microphone earphone 260 and the ear microphone interface of mobile terminal 230 are suitable, and are connected with audio test device 210.Thus, the test audio signal of audio test device 210 generations is sent to mobile terminal 230 by the ear microphone interface of measuring microphone earphone 260 plugs and mobile terminal 230.Wherein, audio test device 210 is for supporting the audio-frequency test instrument of multichannel input and output.
In one embodiment of the invention, measuring microphone earphone 260 is that four joints are with the stereophone of microphone.
As shown in Figure 4, audio test device 210 comprises generation module 211, sending module 212, receiver module 213, frequency generation module 214 and judge module 215.
Particularly, generation module 211 is used for generating test audio signal, then by sending module 212, this test audio signal is sent to and measures microphone earphone 260.Measure microphone earphone 260 and further this test audio signal is sent to mobile terminal 230.
In one embodiment of the invention, the audio test system 200 of the ear microphone of the mobile terminal of the embodiment of the present invention and receiver also comprises audio frequency shielded box 250.Accommodate mobile terminal 230 in audio frequency shielded box 250, measure microphone earphone 260 and measure microphone 220.The test audio signal that is generated by audio test device 210 is input in audio frequency shielded box 250 and outputs in mobile terminal 230 with the form of the signal of telecommunication.
Voice modulation demodulator circuit by inside generates audio signal according to test audio signal to mobile terminal 230 with the test audio signal that receives, and further with the receiver of audio signal winding to mobile terminal 230.The receiver of mobile terminal 230 is play this audio signal, thereby test audio signal is converted to sound wave, and propagate in the space of sound wave in audio frequency shielded box 250.
Measure microphone 220 and be arranged on position near the receiver of mobile terminal 230, be used for gathering the audio signal that mobile terminal 230 generates, and will collect audio signal and send to audio test device 210.
In one embodiment of the invention, the ear microphone of the mobile terminal of the embodiment of the present invention and the audio test system of receiver 200 also comprise front-located power amplifier device 240, be arranged on audio test device 210 and measure between microphone 220, be used for the audio signal of measuring microphone 220 outputs is first amplified, then the audio signal after amplifying is transported to audio test device 210.Wherein, measurement microphone 220 is refuted and is connected to front-located power amplifier device 240.Utilize 240 pairs of audio signals of front-located power amplifier device to amplify and be conducive to follow-up data analysis, and be difficult for by noise jamming.
In one embodiment of the invention, measure microphone 220 and can be the simulation artitificial ear.
The audio signal that receiver module 213 generates by measuring microphone 220 mobile terminal receives 230.214 pairs of audio signals that receive of frequency generation module are carried out data sampling, and the rear data of sampling are carried out the FFT conversion, thereby the frequency of determining audio signal is the frequency that mobile terminal 230 is play.Judge module 215 compares the frequency of the audio signal the determined difference with the frequency of test audio signal with the scope of presetting, so that the input channel of ear microphone and the output channel of receiver are tested.
Within if the difference of the frequency of the frequency of audio signal and test audio signal is positioned at default scope, judge module 215 judgement mobile terminals 230 are tested by voice-frequency channel.If the difference of the frequency of the frequency of audio signal and test audio signal is positioned at outside default scope, the voice-frequency channel of judge module 215 judgement mobile terminals is obstructed, and namely on the output channel of the input channel of ear microphone and receiver, the paster quality of device has earphone jack and the receiver fault of problem or assembling.
Judge module 215 is used for also judging that loudness and distortion are whether within acceptable scope.If the loudness of audio signal is too little, assembly failure is described or foreign matters from being blocked has been arranged receiver.If the distortion of audio signal too greatly illustrate that harmonic signal is too loud.Have whister-type noise or cacophonia in conversation, need to do concrete analysis to the fault mobile phone.
According to the ear microphone of the mobile terminal of the embodiment of the present invention and the audio test system of receiver, can realize the test to the output channel of the input channel of the ear microphone of mobile terminal and receiver.The input channel of ear microphone and the output channel of receiver are avoided the generation of crosstalking with acoustical signal and the signal of telecommunication combination cross-reference of audio frequency.And adopt the method for acoustoelectric signal intersection winding to carry out in real time audio frequency winding frequency sweep, thereby reduced unnecessary delay, shortened the testing time.In addition, the tester that the present invention adopts is less, thereby has higher stability, and measuring accuracy is higher, testing cost is low, is applicable to large-scale production.
Describe and to be understood in flow chart or in this any process of otherwise describing or method, expression comprises module, fragment or the part of code of the executable instruction of the step that one or more is used to realize specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by opposite order, carry out function, this should be understood by the embodiments of the invention person of ordinary skill in the field.
In flow chart the expression or in this logic of otherwise describing and/or step, for example, can be considered to the sequencing list be used to the executable instruction that realizes logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as the computer based system, comprise that the system of processor or other can and carry out the system of instruction from instruction execution system, device or equipment instruction fetch), or use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure be for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random access memory (RAM), read-only memory (ROM), the erasable read-only memory (EPROM or flash memory) of editing, fiber device, and portable optic disk read-only memory (CDROM).In addition, computer-readable medium can be even paper or other the suitable medium that can print described program thereon, because can be for example by paper or other media be carried out optical scanner, then edit, decipher or process in the electronics mode with other suitable methods in case of necessity and obtain described program, then it is stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, a plurality of steps or method can realize with being stored in memory and by software or firmware that suitable instruction execution system is carried out.For example, if realize with hardware, the same in another embodiment, can realize with any one in following technology well known in the art or their combination: have for data-signal being realized the discrete logic of the logic gates of logic function, application-specific integrated circuit (ASIC) with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that and realize that all or part of step that above-described embodiment method is carried is to come the relevant hardware of instruction to complete by program, described program can be stored in a kind of computer-readable recording medium, this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (11)
1. the audio testing method of the ear microphone of a mobile terminal and receiver, is characterized in that, comprises the steps:
Audio test device sends to mobile terminal by measuring microphone earphone with test audio signal, and receive described testing audio letter by the ear microphone interface of described mobile terminal, described mobile terminal generates audio signal according to described test audio signal, and plays described audio signal by the receiver of described mobile terminal;
Described audio test device receives the described audio signal that described mobile terminal generates; And
Described audio test device is tested the voice-frequency channel of described mobile terminal according to described audio signal and described test audio signal.
2. audio testing method as claimed in claim 1, is characterized in that, described mobile terminal is sent to described audio test device by measuring microphone with described audio signal.
3. audio testing method as claimed in claim 2, is characterized in that, described mobile terminal, described measurement microphone earphone and described measurement microphone are placed in the audio frequency shielded box.
4. audio testing method as claimed in claim 1, is characterized in that, also comprises: the described audio signal that described measurement microphone sends is amplified.
5. audio testing method as claimed in claim 1, is characterized in that, described audio test device is tested specifically the voice-frequency channel of described mobile terminal according to described audio signal and described test audio signal and comprised:
Described audio test device is sampled to described audio signal and is carried out fast Fourier FFT conversion to determine the frequency of described audio signal;
Judge that the difference of frequency of the frequency of described audio signal and described test audio signal is whether within default scope;
If judgement within default scope, judges described mobile terminal and tests by voice-frequency channel.
6. the audio test system of the ear microphone of a mobile terminal and receiver, is characterized in that, comprising: audio test device and measurement microphone,
Described audio test device is used for generating test audio signal and described test audio signal being sent to described mobile terminal, and according to the audio signal that receives and described test audio signal, the voice-frequency channel of described mobile terminal is tested, wherein, the described audio signal test audio signal that to be described mobile terminal receive according to the ear microphone interface of described mobile terminal is converted to, and plays by the receiver of described mobile terminal;
Described measurement microphone is used for receiving the described mobile audio signal that sends, and described audio signal is sent to described audio test device.
7. audio test system as claimed in claim 6, is characterized in that, described measurement microphone is the simulation artitificial ear.
8. audio test system as claimed in claim 6, is characterized in that, also comprises:
Measure microphone earphone, be used for receiving the test audio signal from described audio test device, and described test audio signal is sent to the ear microphone interface of described mobile terminal.
9. audio test system as claimed in claim 8, is characterized in that, also comprises:
The audio frequency shielded box accommodates described measurement microphone earphone, described mobile terminal and described measurement microphone among described audio frequency shielded box.
10. audio test system as claimed in claim 6, is characterized in that, also comprises:
Front-located power amplifier device, described front-located power amplifier device are arranged between described audio test device and described measurement microphone, are used for described audio signal is amplified.
11. as the described audio test system of any one in right goblin gas 6-10, it is characterized in that, described audio test device comprises:
Generation module is used for generating test audio signal;
Sending module is used for described test audio signal is sent to described measurement microphone earphone;
Receiver module is used for receiving the described audio signal that described measurement microphone sends;
The frequency generation module is used for described audio signal is sampled and carried out fast Fourier FFT conversion to determine the frequency of described audio signal; And
Judge module is used for judging that the difference of frequency of the frequency of described audio signal and described test audio signal whether within default scope, tests by voice-frequency channel if judgement within default scope, judges described mobile terminal.
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