CN104618552A - Audio detection system of mobile terminal - Google Patents
Audio detection system of mobile terminal Download PDFInfo
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- CN104618552A CN104618552A CN201310536255.5A CN201310536255A CN104618552A CN 104618552 A CN104618552 A CN 104618552A CN 201310536255 A CN201310536255 A CN 201310536255A CN 104618552 A CN104618552 A CN 104618552A
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Abstract
The invention provides an audio detection system of a mobile terminal, comprising a detection unit and a processing unit. A first MIC interface receives a first audio signal; a first baseband chip converts the first audio signal into a first digital signal, encodes and modulates the first digital signal, and transmits the first digital signal to a second baseband chip; the second baseband chip demodulates and decodes the first digital signal, converts the first digital signal into a first analog signal, and transmits the first analog signal to a second SPK interface; and the detection unit detects whether the first audio signal is the same with the first analog signal. A second MIC interface receives a second audio signal; the second baseband chip converts the second audio signal into a second digital signal, encodes and modulates the second digital signal, and transmits the second digital signal to a first radio frequency module; the first baseband chip demodulates and decodes the second digital signal, converts the second digital signal into a second analog signal, and transmits the second analog signal to a second SPK interface; and the detection unit detects whether the second audio signal is the same with the second analog signal. The audio detection system can accurately detect whether audio signals transmitted by an audio channel are distorted.
Description
Technical field
The present invention relates to a kind of mobile terminal, particularly a kind of audio detection system of mobile terminal.
Background technology
A function very important for mobile terminals such as mobile phones is exactly transmission of speech signals; and existing mobile phone in use often to there will be voice fuzzy unclear or intermittent; can't hear the situation of sound even completely; so be necessary to detect the voice channel of mobile phone before mobile phone dispatches from the factory, ensure that the voice of mobile phone transmission are undistorted.
The distortion level active perception mostly artificially of the transferring voice of current inspection mobile phone, but people's ear is narrower for the sensing range of audio frequency, and very large otherness is also existed for the perceptual sensitivity of the voice signal of different frequency, this artificially judges that in mobile terminal, the distortion level of Signal transmissions also exists very large uncertainty and otherness with regard to directly results in.
Summary of the invention
The technical problem to be solved in the present invention goes whether the audio signal judging to transmit in mobile terminal is undistorted transmission in order to overcome in prior art by the subjective sense of hearing of people, there is the defect judging uncertain and otherness, a kind of audio detection system that accurately can detect audio signal that the voice-grade channel of mobile terminal transmits the whether mobile terminal of distortion is provided.
The present invention solves above-mentioned technical problem by following technical proposals:
The invention provides a kind of audio detection system of mobile terminal, this mobile terminal comprises a MIC interface, a SPK interface and the first baseband chip, this first baseband chip comprises one first AD converter, one first encoder, one first decoder, one first D/A converter and one first radio-frequency module, its feature is, this audio detection system comprises a detecting unit and a processing unit, and this processing unit comprises the 2nd MIC interface, the 2nd SPK interface and the second baseband chip;
One MIC interface is for receiving one first audio signal, this first AD converter is used for this first audio signal to be converted to one first digital signal, this first encoder is used for this first encoding digital signals, and this first radio-frequency module is used for modulating this encoded first digital signal and this first digital signal modulated being sent to this second baseband chip;
This second baseband chip is used for carrying out demodulation code to this first digital signal received, and this first digital signal through demodulation code is converted to one first analog signal and transfers to the 2nd SPK interface;
Whether this detecting unit is identical with the first analog signal of the 2nd SPK interface for this first audio signal detecting a MIC interface; Or,
2nd MIC interface is for receiving one second audio signal, this second baseband chip is used for this second audio signal to be converted to one second digital signal, and to this second encoding digital signals, modulation and this second digital signal modulated is sent to this first radio-frequency module;
This first radio-frequency module is used for carrying out demodulation to this second digital signal received, this first decoder is used for decoding to this second digital signal through demodulation, and this first D/A converter is used for this second digital signal through decoding be converted to one second analog signal and transfer to a SPK interface;
Whether this detecting unit is identical with the second analog signal of a SPK interface for this second audio signal detecting the 2nd MIC interface.
In such scheme, if this detecting unit detects that this first audio signal of a MIC interface is identical with the first analog signal of the 2nd SPK interface, the audio-frequency function then characterizing the upstream tones passage of this mobile terminal is normal, namely there is not distortion phenomenon in the up link of mobile terminal, otherwise the audio-frequency function characterizing this voice-grade channel is abnormal, and distortion phenomenon appears in the up link of mobile terminal.
If this detecting unit detects that this second audio signal of the 2nd MIC interface is identical with the second analog signal of a SPK interface, the audio-frequency function then characterizing the downstream tones passage of this mobile terminal is normal, namely there is not distortion phenomenon in the down link of mobile terminal, otherwise the audio-frequency function characterizing this voice-grade channel is abnormal, and distortion phenomenon appears in the down link of mobile terminal.
Preferably, this audio detection system also comprises a signal generator, and this first audio signal and this second audio signal produce by this signal generator.This programme selects this signal generator to produce audio signal, but those skilled in the art will appreciate that the generation source of audio signal of the present invention is not limited to signal generator, any parts producing audio signal.
Preferably, this first audio signal and this second audio signal are the simple signal of 1-4KHz.Certainly, those skilled in the art will appreciate that this signal is not limited to this simple signal, those skilled in the art can also select other signal.
Preferably, this detecting unit comprises one for showing the dual channel oscilloscope of this first audio signal and this first analog signal or this second audio signal and this second analog signal, one passage of this dual channel oscilloscope is connected with a MIC interface, another passage is connected with the 2nd SPK interface, or a passage of this dual channel oscilloscope is connected with the 2nd MIC interface, another passage is connected with a SPK interface.
When detecting the up link of mobile terminal, user sees the waveform of this first audio signal and this first analog signal by this dual channel oscilloscope, when detecting the down link of mobile terminal, user sees the waveform of this second audio signal and this second analog signal by this dual channel oscilloscope.
Preferably, this detecting unit for detecting the amplitude of this first audio signal, whether the amplitude of frequency and this first analog signal, frequency identical, or, this detecting unit for detecting the amplitude of this second audio signal, whether the amplitude of frequency and this second analog signal, frequency identical.
Preferably, this processing unit is a radio frequency comprehensive test instrument, and this radio frequency comprehensive test instrument is existing parts, therefore, is no longer described in detail the structure of this radio frequency comprehensive test instrument here.
Preferably, this first encoder and this second encoder are DSP(Digital Signal Processing) processor.
Preferably, this first baseband chip also comprises a baseband modulation unit, and this baseband modulation unit is used for modulating this encoded first digital signal, and this first radio-frequency module is used for again modulating this first digital signal modulated.
On the basis meeting this area general knowledge, above-mentioned each optimum condition, can combination in any, obtains the preferred embodiments of the invention.
Positive progressive effect of the present invention is:
The audio detection system of mobile terminal of the present invention, to be set up with processing unit by mobile terminal and communicate, and detected the audio signal transmitted between the two by detecting unit, and then accurately can detect the audio signal whether distortion of voice-grade channel transmission of mobile terminal.The present invention realizes the automatic detection function to voice-grade channel, judges without the need to human subjective, improves the reliability of production test.
Accompanying drawing explanation
Fig. 1 is the structural representation of the audio detection systems axiol-ogy up link of present pre-ferred embodiments.
Fig. 2 is the structural representation of the audio detection systems axiol-ogy down link of present pre-ferred embodiments.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.
As depicted in figs. 1 and 2, the invention provides a kind of audio detection system of mobile terminal, this audio detection system comprises mobile terminal 1, radio frequency comprehensive test instrument 2, signal generator 3 and detecting unit (not shown), this mobile terminal 1 comprises a MIC interface 11, SPK interface 18 and a first baseband chip (not shown), and this first baseband chip comprises the first AD converter 12, first encoder 13, baseband modulation unit 14, first radio-frequency module 15, first decoder 16 and the first D/A converter 17; This radio frequency comprehensive test instrument 2 comprises the 2nd MIC interface 21, second baseband chip 22 and the 2nd SPK interface 23; This detecting unit comprises one for showing the dual channel oscilloscope 4 of audio signal.
The above-mentioned vibrational power flow introducing this audio detection system, below introduce in detail and utilize the up link of this this mobile terminal 1 of audio detection systems axiol-ogy and the process of down link:
Structure chart shown in composition graphs 1, introduce the process of the up link of this this mobile terminal 1 of audio detection systems axiol-ogy in detail:
One MIC interface 11 is for receiving one first audio signal, and this first audio signal is the simple signal of 1-4KHz, the simple signal of the preferred 3KHz of the present embodiment, and it is produced by this signal generator 3.This first AD converter 12 is for being converted to one first digital signal by this first audio signal, this first encoder 13 is for this first encoding digital signals, wherein, this first encoder 13 is dsp processor, this baseband modulation unit 14 is for modulating this encoded first digital signal, and this first radio-frequency module 15 is for again modulating this encoded first digital signal and this first digital signal modulated being sent to this second baseband chip 22.
This first digital signal through demodulation code, for carrying out demodulation code to this first digital signal received, is converted to one first analog signal and transfers to the 2nd SPK interface 23 by this second baseband chip 22.
Whether the amplitude of the first analog signal that this detecting unit receives with the 2nd SPK interface 23 for the amplitude of this first audio signal, the frequency detecting a MIC interface 11 and receive, frequency be identical, if identical, the audio-frequency function characterizing the upstream tones passage of this mobile terminal is normal, namely there is not distortion phenomenon in the up link of mobile terminal, otherwise the audio-frequency function characterizing this voice-grade channel is abnormal, and distortion phenomenon appears in the up link of mobile terminal.
And in the process, a passage of this dual channel oscilloscope 4 is connected with a MIC interface 11, another passage is connected with the 2nd SPK interface 23.This dual channel oscilloscope 4 is for showing this first audio signal and this first analog signal, user sees the waveform of this first audio signal and this first analog signal by this dual channel oscilloscope 4, certainly, by the waveform of this first audio signal of this dual channel oscilloscope 4 display and this first analog signal, user can also judge whether the up link of mobile terminal occurs distortion phenomenon artificially.If in the waveform of this dual channel oscilloscope 4 display, amplitude, the frequency of the amplitude of this first audio signal, frequency and this first analog signal are identical, then there is not distortion phenomenon in the up link of mobile terminal, if the amplitude of the amplitude of this first audio signal, frequency and this first analog signal, frequency are not identical, then there is distortion phenomenon in the up link of mobile terminal.
Structure chart shown in composition graphs 2, introduce the process of the down link of this this mobile terminal 1 of audio detection systems axiol-ogy in detail:
2nd MIC interface 21 is for receiving one second audio signal, and this second audio signal is the simple signal of 1-4KHz, the simple signal of the preferred 2KHz of the present embodiment, and it is produced by this signal generator 3.This second baseband chip 22 for this second audio signal is converted to one second digital signal, and to this second encoding digital signals, modulation and this second digital signal modulated is sent to this first radio-frequency module 15.
This first radio-frequency module 15 is for carrying out demodulation to this second digital signal received, this first decoder 16 is for decoding to this second digital signal through demodulation, and this first D/A converter 17 is for being converted to one second analog signal by this second digital signal through decoding and transferring to a SPK interface 18.
Whether the amplitude of the second analog signal that this detecting unit receives with a SPK interface 18 for the amplitude of this second audio signal, the frequency detecting the 2nd MIC interface 21 and receive, frequency be identical.If identical, the audio-frequency function characterizing the downstream tones passage of this mobile terminal is normal, and namely distortion phenomenon does not appear in the down link of mobile terminal, otherwise the audio-frequency function characterizing this voice-grade channel is abnormal, and distortion phenomenon appears in the down link of mobile terminal.
And in the process, a passage of this dual channel oscilloscope 4 is connected with the 2nd MIC interface 21, another passage is connected with a SPK interface 18.This dual channel oscilloscope 4 is for showing this second audio signal and this second analog signal, user sees the waveform of this second audio signal and this second analog signal by this dual channel oscilloscope 4, certainly, by the waveform of this second audio signal of this dual channel oscilloscope 4 display and this second analog signal, user can also judge whether the down link of mobile terminal occurs distortion phenomenon artificially.If in the waveform of this dual channel oscilloscope 4 display, amplitude, the frequency of the amplitude of this second audio signal, frequency and this second analog signal are identical, then there is not distortion phenomenon in the down link of mobile terminal, if the amplitude of the amplitude of this second audio signal, frequency and this second analog signal, frequency are not identical, then there is distortion phenomenon in the down link of mobile terminal.
In the present embodiment, this signal generator 3 is selected to produce audio signal, but those skilled in the art it will be appreciated that, the generation source of audio signal of the present invention is not limited to signal generator, any parts producing audio signal, and this signal is not limited to this simple signal, those skilled in the art can also select other signal.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection scope of the present invention.
Claims (8)
1. the audio detection system of a mobile terminal, this mobile terminal comprises a MIC interface, a SPK interface and the first baseband chip, this first baseband chip comprises one first AD converter, one first encoder, one first decoder, one first D/A converter and one first radio-frequency module, it is characterized in that, this audio detection system comprises a detecting unit and a processing unit, and this processing unit comprises the 2nd MIC interface, the 2nd SPK interface and the second baseband chip;
Wherein, one MIC interface is for receiving one first audio signal, this first AD converter is used for this first audio signal to be converted to one first digital signal, this first encoder is used for this first encoding digital signals, and this first radio-frequency module is used for modulating this encoded first digital signal and this first digital signal modulated being sent to this second baseband chip;
This second baseband chip is used for carrying out demodulation code to this first digital signal received, and this first digital signal through demodulation code is converted to one first analog signal and transfers to the 2nd SPK interface;
Whether this detecting unit is identical with the first analog signal of the 2nd SPK interface for this first audio signal detecting a MIC interface; Or,
2nd MIC interface is for receiving one second audio signal, this second baseband chip also for this second audio signal is converted to one second digital signal, and to this second encoding digital signals, modulation and this second digital signal modulated is sent to this first radio-frequency module;
This first radio-frequency module is used for carrying out demodulation to this second digital signal received, this first decoder is used for decoding to this second digital signal through demodulation, and this first D/A converter is used for this second digital signal through decoding be converted to one second analog signal and transfer to a SPK interface;
Whether this detecting unit this second audio signal also for detecting the 2nd MIC interface is identical with the second analog signal of a SPK interface.
2. audio detection system as claimed in claim 1, it is characterized in that, this audio detection system also comprises a signal generator, and this first audio signal and this second audio signal produce by this signal generator.
3. audio detection system as claimed in claim 2, is characterized in that, this first audio signal and this second audio signal are the simple signal of 1-4KHz.
4. audio detection system as claimed in claim 1, it is characterized in that, this detecting unit comprises one for showing the dual channel oscilloscope of this first audio signal and this first analog signal or this second audio signal and this second analog signal, one passage of this dual channel oscilloscope is connected with a MIC interface, another passage is connected with the 2nd SPK interface, or a passage of this dual channel oscilloscope is connected with the 2nd MIC interface, another passage is connected with a SPK interface.
5. audio detection system as claimed in claim 1, it is characterized in that, this detecting unit for detecting the amplitude of this first audio signal, whether the amplitude of frequency and this first analog signal, frequency identical, or, this detecting unit for detecting the amplitude of this second audio signal, whether the amplitude of frequency and this second analog signal, frequency identical.
6. audio detection system as claimed in claim 1, it is characterized in that, this processing unit is a radio frequency comprehensive test instrument.
7. audio detection system as claimed in claim 1, it is characterized in that, this first encoder is dsp processor.
8. audio detection system as claimed in claim 1, it is characterized in that, this first baseband chip also comprises a baseband modulation unit, this baseband modulation unit is used for modulating this encoded first digital signal, and this first radio-frequency module is used for again modulating this first digital signal modulated.
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| CN201310536255.5A CN104618552A (en) | 2013-11-01 | 2013-11-01 | Audio detection system of mobile terminal |
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| CN201310536255.5A CN104618552A (en) | 2013-11-01 | 2013-11-01 | Audio detection system of mobile terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019104480A1 (en) * | 2017-11-28 | 2019-06-06 | 福建联迪商用设备有限公司 | Audio pin testing method and testing device for communication module |
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| CN103179240A (en) * | 2011-12-20 | 2013-06-26 | 比亚迪股份有限公司 | Audio test method and system for mobile terminal |
| CN203554542U (en) * | 2013-11-01 | 2014-04-16 | 上海晨兴希姆通电子科技有限公司 | Audio detection system of mobile terminal |
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| CN102651671A (en) * | 2011-02-23 | 2012-08-29 | 西安龙飞软件有限公司 | Novel mobile phone audio test method |
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Application publication date: 20150513 |