CN110113469A - Tested speech breaks through signal circuit and its method for measurement - Google Patents
Tested speech breaks through signal circuit and its method for measurement Download PDFInfo
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- CN110113469A CN110113469A CN201910373965.8A CN201910373965A CN110113469A CN 110113469 A CN110113469 A CN 110113469A CN 201910373965 A CN201910373965 A CN 201910373965A CN 110113469 A CN110113469 A CN 110113469A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000005259 measurement Methods 0.000 title claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 132
- 238000010168 coupling process Methods 0.000 claims abstract description 132
- 238000005859 coupling reaction Methods 0.000 claims abstract description 132
- 239000003990 capacitor Substances 0.000 claims abstract description 105
- 230000005611 electricity Effects 0.000 claims description 18
- 238000012360 testing method Methods 0.000 description 35
- 230000008569 process Effects 0.000 description 16
- 239000011324 bead Substances 0.000 description 9
- 238000007405 data analysis Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000036039 immunity Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention patent provides a kind of tested speech and breaks through signal circuit and its method for measurement, the tested speech breaks through signal circuit, it include: a power control unit, one first node of a first end electric property coupling of the power control unit, one second node of a second end electric property coupling of the power control unit, the one third node of a third end electric property coupling of the power control unit, the one first resistor unit of a 4th end electric property coupling of the power control unit；One first capacitor unit, third node described in one end electric property coupling of the first capacitor unit, the other end electrical ground of the first capacitor unit；One second capacitor cell, second node described in one end electric property coupling of second capacitor cell, the other end electrical ground of second capacitor cell；And a third capacitor cell, first node described in one end electric property coupling of the third capacitor cell, the other end electrical ground of the third capacitor cell.
Description
Technical field
The invention patent relates to tone testing fields, break through signal circuit and its measurement more particularly to a kind of tested speech
Method.
Background technique
Currently, for the communication products with audio-frequency function, such as mobile phone, it is sold on EU market, it is necessary to pass through
Corresponding electromagnetic compatibility testing；It needs to carry out audio for voice signal and breaks through test, be subjected to verify audio signal
In the case of external interference, whether the performance of voice signal is impacted, if influences speech quality, wherein radiation immunity and conduction
Immunity to interference test is two test items that electromagnetic compatibility testing requires.
And Electro Magnetic Compatibility (Electromagnetic Compatibility, EMC), mainly include two big tests:
EMI (Electromagnetic Interference, EMI) and EMS (Electro Magnetic Susceptibility,
EMS).And EMI is known as electromagnetic field active interference, and EMS is known as electromagnetic field interference rejection ability.And mainly introduce the one of them of EMS
(english abbreviation ABT) is broken through for voice, which are mainly applied to the communication terminal device for supporting voice communication, such as it is mobile phone, solid
Words, plate etc..The good of sound quality is generally determined by tested speech breakthrough level and bad (audio signal that interference signal demodulates is
It is no exceeded).And it is relevant to voice breakthrough have two class testings be respectively as follows: one is radiation test (Radiated
Susceptibility, RS), another kind is conduction test (Conducted Susceptibility, CS), the former is in antenna
It is tested under the electromagnetic field of source radiation 3V/m or 10V/m, the latter is the disturbed test that 3V or 10V is injected on power connector.Such as
Fruit RS or CS test crash, European Union forbid the product to sell in the market at it, unavailable product access license.And America for
RS or CS are not strictly required.
The test request measured object of RS and CS builds test environment according to normal use mode, and also meaning that needs in test
It arranges in pairs or groups earphone and charger.And this test is substantially transparent for earphone and charger supplier requirement, does not have
The scheme of body is implemented.So being all that terminal producer tries every possible means in the product the problem of encountering RS and CS.When CS is tested, 3V interference
Source is injected by USB charger, so terminal producer can add magnet ring processing to cross this and test directly on USB line.
RS is tested, test terminal device adequately leaks the radiation field in 3V/m or 10V/m cruelly, and DUT, earphone and charger all can
Interference signal is received, then by audio demodulation at interference signal, to generate interference to useful voice signal.
Voice breaks through item and is divided into uplink and downlink, and uplink, which refers to, receives radiofrequency signal demodulation by comprehensive test instrument end
Audio afterwards, and downlink refers to the speech level that earphone receives.It is to require the hole microphone (MIC) during the test
It blocks, excludes the interference of extraneous sound source.The sound pressure level value of test request RS and CS are lower than -35dBPa, are otherwise judged to breaking through.
If encountering RS CS problem, common solution is to change the reserved match bit of earphone MIC, inside earphone
Schematic diagram is broadly divided into: L channel, right channel, MIC and earphone are main.Some capacitors would generally be reserved in MIC access
Coordination, but producer will not usually paste material to save cost here.In fact in RS CS debug test,
Herein plus filter capacitor is also different is surely fully solved problem.Just as stated above, test whole process MIC is blocked, no
Have audio input signal, thus comprehensive test instrument end demodulate come will not be useful audio signal but interference signal.Such as Fig. 1
Shown, any filter capacitor will not be usually added in left and right acoustic channels, mainly prevent interference effect speech level.
Therefore, the main purpose of the invention patent is to provide a kind of tested speech and breaks through signal circuit and its measurement side
Method, with the more optimized above-mentioned problem mentioned.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the invention patent is, provides a kind of tested speech breakthrough signal electricity
Road a, comprising: power control unit, one first node of a first end electric property coupling of the power control unit, the power supply
One second node of a second end electric property coupling of control unit, one third of a third end electric property coupling of the power control unit
Node, the one first resistor unit of a 4th end electric property coupling of the power control unit；One first capacitor unit, described first
Third node described in one end electric property coupling of capacitor cell, the other end electrical ground of the first capacitor unit；One second electricity
Hold unit, second node described in one end electric property coupling of second capacitor cell, the other end electricity of second capacitor cell
Property ground connection；And a third capacitor cell, first node described in one end electric property coupling of the third capacitor cell, the third
The other end electrical ground of capacitor cell.
It the purpose of the invention patent and solves its technical problem and adopts the following technical solutions to realize.
In an embodiment of the invention patent, a second resistance unit, one end of the second resistance unit are further included
First resistor unit described in electric property coupling, the other end electrical ground of the second resistance unit.
In an embodiment of the invention patent, a 3rd resistor unit, one end of the 3rd resistor unit are further included
First node described in electric property coupling, one first speaker unit of other end electric property coupling of the 3rd resistor unit.
In an embodiment of the invention patent, one the 4th resistance unit, one end of the 4th resistance unit are further included
Second node described in electric property coupling, one second speaker unit of other end electric property coupling of the 4th resistance unit.
In an embodiment of the invention patent, one the 5th resistance unit, one end of the 5th resistance unit are further included
Third node described in electric property coupling, the one third speaker unit of other end electric property coupling of the 5th resistance unit.
In an embodiment of the invention patent, one the 6th resistance unit, one end of the 6th resistance unit are further included
The power control unit that one 1.8 volts of electric property coupling, the second loudspeaking described in the other end electric property coupling of the 6th resistance unit
Unit.
In an embodiment of the invention patent, one the 7th resistance unit, one end of the 7th resistance unit are further included
Electrically receive one first differential signal, the other end electrical ground of the 7th resistance unit.
In an embodiment of the invention patent, one the 4th capacitor cell, one end of the 4th capacitor cell are further included
Electrically receive one second differential signal, second resistance unit described in the other end electric property coupling of the 4th capacitor cell.
In an embodiment of the invention patent, a diode is further included, one end of the diode is electrical
Couple one the 4th speaker unit, the other end electrical ground of the diode.
It the purpose of the invention patent and solves its technical problem also following technical measures can be used to further realize.
The another object of the invention patent is to provide a kind of method for measurement of tested speech breakthrough signal circuit, comprising: is mentioned
For a power control unit, one first node of a first end electric property coupling of the power control unit, the power supply control list
One second node of a second end electric property coupling of member, the one third node of a third end electric property coupling of the power control unit,
The one first resistor unit of a 4th end electric property coupling of the power control unit；One first capacitor unit is provided, described first
Third node described in one end electric property coupling of capacitor cell, the other end electrical ground of the first capacitor unit；There is provided one
Two capacitor cells, second node described in one end electric property coupling of second capacitor cell, second capacitor cell it is another
Hold electrical ground；A third capacitor cell is provided, first node described in one end electric property coupling of the third capacitor cell is described
The other end electrical ground of third capacitor cell；One second resistance unit, one end electrical property coupling of the second resistance unit are provided
Connect the first resistor unit, the other end electrical ground of the second resistance unit；One 3rd resistor unit is provided, described
The other end electric property coupling 1 first of first node described in one end electric property coupling of three resistance units, the 3rd resistor unit is raised
Sound unit；One the 4th resistance unit is provided, second node described in one end electric property coupling of the 4th resistance unit, the described 4th
One second speaker unit of other end electric property coupling of resistance unit；One the 5th resistance unit is provided, the 5th resistance unit
Third node described in the electric property coupling of one end, the one third speaker unit of other end electric property coupling of the 5th resistance unit；It provides
One the 6th resistance unit, one 1.8 volts of one end electric property coupling of power control unit of the 6th resistance unit, the described 6th
Second speaker unit described in the other end electric property coupling of resistance unit；One the 7th resistance unit, the 7th resistance unit are provided
One end electrically receive one first differential signal, the other end electrical ground of the 7th resistance unit；One the 4th capacitor is provided
Unit, one end of the 4th capacitor cell electrically receive one second differential signal, the other end electricity of the 4th capacitor cell
Property the coupling second resistance unit；A diode is provided, one end electric property coupling 1 the 4th of the diode is raised
Sound unit, the other end electrical ground of the diode；And through the second resistance unit and the 4th capacitor
And the connection of the 7th resistance unit, measure the waveform signal of first differential signal and second differential signal.
The invention patent connects filter capacitor through power control unit, and by constantly testing, final to determine in left and right
Sound channel and microphone aperture parallel connection 680pf capacitance.And audio jack (Audio jack) on a printed circuit adds magnetic bead, and
By the break-through point of the audio after comprehensive test instrument end reception radiofrequency signal demodulation in 40-60Mhz range, and resonance point can be used and exist
The magnetic bead of high impedance in this frequency range, inhibition interference effect in this way will be more preferable, thus sound press value is made to fully meet requirement.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, making below to required in embodiment
Attached drawing is briefly described.The accompanying drawings in the following description is only the section Example of the application, skill common for this field
For art personnel, without creative efforts, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is exemplary earphone schematic internal view.
Fig. 2 is that the tested speech of one embodiment of the invention breaks through signal circuit figure.
Fig. 3 a is that the tested speech measured when the second resistance unit in Fig. 2 is 0 ohm in one embodiment of the invention is broken through
The data analysis chart of signal circuit.
Fig. 3 b is the tested speech breakthrough for measuring another embodiment of the present invention when the second resistance unit in Fig. 2 is 0 ohm
The data analysis chart of signal circuit.
Fig. 4 a is the tested speech breakthrough for measuring one embodiment of the invention when the second resistance unit in Fig. 2 is 600 ohm
The data analysis chart of signal circuit.
Fig. 4 b be measure second resistance unit another embodiment of the present invention when being 600 ohm in Fig. 2 tested speech it is prominent
The data analysis chart of broken signal circuit.
Fig. 5 is that the tested speech of one embodiment of the invention breaks through the method for measurement flow chart of signal circuit.
Specific embodiment
The explanation of following embodiment is to can be used to the specific of implementation to illustrate the invention patent with reference to additional schema
Embodiment.The direction term that the invention patent is previously mentioned, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "
Outside ", " side " etc. is only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention
Patent, rather than to limit the invention patent.
In an embodiment of the present invention, in order to assist to explain method of the invention, it will be assumed that broken through and interrogated with a tested speech
Number circuit executes method of the invention.It should be understood, however, that device and/or method can change, do not need completely
According to work associated with each other described below, these variations are all in the range of present embodiment.It is understood that some
In embodiment, processing method of the invention can be broken through in signal circuit by a tested speech to be implemented, such as is driven by operation
Dynamic chip.It is emphasized that unless otherwise indicated, method of the invention does not need to be held according to exact sequence as shown in the figure
Row；And similar multiple processes (blocks) can be concurrently performed, rather than in order；Therefore, method of the invention
Element be known as " process (blocks) " in the text rather than " step ".It is to be further understood that method can also be in test language
It is implemented in the modification of sound breakthrough signal circuit.It is further appreciated that method of the invention can be realized in the processing system.So
And method can also be implemented in the similar system for having similar component from system but being arranged in different configurations.
Attached drawing and explanation are considered inherently illustrative, rather than restrictive.The similar list of structure in the figure
Member is to be given the same reference numerals.In addition, in order to understand and be convenient for description, the size and thickness of each component shown in the accompanying drawings are
It is arbitrarily shown, but the invention patent is without being limited thereto.
In addition, in the description, unless explicitly described as opposite, otherwise word " comprising " will be understood as meaning to wrap
The component is included, but is not excluded for any other component.In addition, in the description, " above " means to be located at target group
Part either above or below, and be not intended to must be positioned on the top based on gravity direction.
Further to illustrate that the invention patent is the technical means and efficacy reaching predetermined goal of the invention and being taken, below
In conjunction with attached drawing and specific embodiment, signal circuit and its measurement side are broken through to the tested speech that patent according to the present invention proposes
Method, specific embodiment, structure, feature and its effect, detailed description is as follows.
Fig. 2 is that the tested speech of one embodiment of the invention breaks through signal circuit figure, Fig. 3 a is the second resistance measured in Fig. 2
Data analysis chart, Fig. 3 b of tested speech breakthrough signal circuit when unit is 0 ohm in one embodiment of the invention are to measure Fig. 2
In second resistance unit be 0 ohm when another embodiment of the present invention tested speech break through signal circuit data analysis chart,
Fig. 4 a is the tested speech breakthrough signal circuit for measuring one embodiment of the invention when the second resistance unit in Fig. 2 is 600 ohm
Data analysis chart and Fig. 4 b be the test for measuring second resistance unit another embodiment of the present invention when being 600 ohm in Fig. 2
Voice breaks through the data analysis chart of signal circuit, please refers to Fig. 2, Fig. 3 a and Fig. 3 b, for DOWNLINK, the audio of demodulation
Signal is that audio jack is output to from audio chip again to earphone, and entire access is long, and test macro is exactly to monitor earpiece holes
Sound pressure level, so might not be obvious close to earphone end shunt capacitance effect, and close to audio chip end and capacitor
There may be better effect.And for UPLINK, after comprehensive test instrument receives the upstream radio-frequency signal of mobile phone, it is demodulated to audio
Whether signal, the sound pressure level of audio analyzer detecting at this time are exceeded.It can be seen that the test result and earphone of UPLINK are not
Have what relationship, and big with cell phone mainboard Relationship Comparison, thus we to guarantee the ground of devices all in complete machine is all good
With main it is connected, audio jack is especially flowed back into printed circuit board mainly mainly.And Fig. 2 is that printed circuit board end audio is inserted
The schematic diagram in hole (Audio Jack), relevant with earpiece audio transmission is four lines (L channel, right channel, MIC and ground),
Middle earphone also as the Part way of FM, for second resistance unit 320 if it is 0ohm, the reflux of test ground is best, but at this time
FM differential lines are grounded together, and FM does not work at this time.So second resistance unit 320 can only use magnetic bead, and the choosing of magnetic bead at this time
Type requires to consider to inhibit to interfere, and guarantees that system flowback is minimum again.If scheming by taking the breakthrough of GSM900CS tested speech as an example
3a and Fig. 3 b is original uplink and downlink test data, it can be seen that has been above sound pressure level standard.
Referring to FIG. 2, in an embodiment of the invention patent, a kind of tested speech breakthrough signal circuit 10, comprising: one
Power control unit 100, first end 110 (citing: MIC microphone aperture) electric property coupling one for the power control unit 100
First node P1 (n), second end 120 (citing: audio L channel) electric property coupling one second for the power control unit 100
Node P2 (n), the one third node of third end 130 (citing: an audio right channel) electric property coupling of the power control unit 100
P3 (n), one the 4th end 140 (citing: audio ground terminal) electric property coupling, the one first resistor unit of the power control unit 100
310；One first capacitor unit 210, third node P3 (n) described in one end electric property coupling of the first capacitor unit 210 are described
The other end electrical ground of first capacitor unit 210；One second capacitor cell 220, one end electricity of second capacitor cell 220
Property the coupling second node P2 (n), the other end electrical ground of second capacitor cell 220；An and third capacitor list
Member 230, first node P1 (n) described in one end electric property coupling of the third capacitor cell 230, the third capacitor cell 230
Other end electrical ground.
Referring to FIG. 2, further including a second resistance unit 320, second electricity in an embodiment of the invention patent
First resistor unit 310 described in one end electric property coupling of unit 320 is hindered, the other end of the second resistance unit 320 is electrically connected with
Ground.
Referring to FIG. 2, further including a 3rd resistor unit 330, the third electricity in an embodiment of the invention patent
Hinder first node P1 (n) described in one end electric property coupling of unit 330, the other end electric property coupling of the 3rd resistor unit 330
One first speaker unit 410.
Referring to FIG. 2, further including one the 4th resistance unit 340, the 4th electricity in an embodiment of the invention patent
Hinder second node P2 (n) described in one end electric property coupling of unit 340, the other end electric property coupling of the 4th resistance unit 340
One second speaker unit 420.
Referring to FIG. 2, further including one the 5th resistance unit 350, the 5th electricity in an embodiment of the invention patent
Hinder third node P3 (n) described in one end electric property coupling of unit 350, the other end electric property coupling of the 5th resistance unit 350
One third speaker unit 430.
Referring to FIG. 2, further including one the 6th resistance unit 360, the 6th electricity in an embodiment of the invention patent
Hinder one 1.8 volts of one end electric property coupling of power control unit 105 of unit 360, the other end of the 6th resistance unit 360
Second speaker unit 420 described in electric property coupling.
Referring to FIG. 2, further including one the 7th resistance unit 370, the 7th electricity in an embodiment of the invention patent
The one end for hindering unit 370 electrically receives one first differential signal FM1, the other end electrical ground of the 7th resistance unit 370.
Referring to FIG. 2, further including one the 4th capacitor cell 240, the 4th electricity in an embodiment of the invention patent
The one end for holding unit 240 electrically receives one second differential signal FM2, the other end electric property coupling of the 4th capacitor cell 240
The second resistance unit 320.
Referring to FIG. 2, further including a diode 500, the diode list in an embodiment of the invention patent
The 4th speaker unit 440 of one end electric property coupling 1 of member 500, the other end electrical ground of the diode 500.
Referring to FIG. 2, a kind of tested speech breaks through the measurement side of signal circuit in an embodiment of the invention patent
Method a, comprising: power control unit 100,110 electric property coupling one first of a first end of the power control unit 100 are provided
Node P1 (n), 120 electric property coupling of a second end, the one second node P2 (n) of the power control unit 100, the power supply control
130 electric property coupling of a third end, the one third node P3 (n) of unit 100 processed, one the 4th end of the power control unit 100
140 electric property coupling, one first resistor unit 310；One first capacitor unit 210, one end of the first capacitor unit 210 are provided
Third node P3 (n) described in electric property coupling, the other end electrical ground of the first capacitor unit 210；One second capacitor is provided
Unit 220, second node P2 (n) described in one end electric property coupling of second capacitor cell 220, second capacitor cell
220 other end electrical ground；One third capacitor cell 230, one end electric property coupling institute of the third capacitor cell 230 are provided
State first node P1 (n), the other end electrical ground of the third capacitor cell 230；One second resistance unit 320, institute are provided
State first resistor unit 310 described in one end electric property coupling of second resistance unit 320, the second resistance unit 320 it is another
Hold electrical ground；One 3rd resistor unit 330, first segment described in one end electric property coupling of the 3rd resistor unit 330 are provided
Point P1 (n), one first speaker unit 410 of other end electric property coupling of the 3rd resistor unit 330；One the 4th resistance list is provided
Member 340, second node P2 (n) described in one end electric property coupling of the 4th resistance unit 340, the 4th resistance unit 340
One second speaker unit 420 of other end electric property coupling；One the 5th resistance unit 350 is provided, the 5th resistance unit 350
Third node P3 (n) described in the electric property coupling of one end, the one third loudspeaking list of other end electric property coupling of the 5th resistance unit 350
Member 430；One the 6th resistance unit 360, one 1.8 volts of one end electric property coupling of power supply of the 6th resistance unit 360 are provided
Control unit 105, the second speaker unit 420 described in the other end electric property coupling of the 6th resistance unit 360；There is provided one the 7th
One end of resistance unit 370, the 7th resistance unit 370 electrically receives one first differential signal FM1, the 7th resistance list
The other end electrical ground of member 370；One the 4th capacitor cell 240 is provided, one end of the 4th capacitor cell 240 electrically receives
One second differential signal FM2, second resistance unit 320 described in the other end electric property coupling of the 4th capacitor cell 240；It provides
One diode 500, the 4th speaker unit 440 of one end electric property coupling 1 of the diode 500, the diode list
The other end electrical ground of member 500；And through the second resistance unit 320 and the 4th capacitor 240 and the described 7th
The connection of resistance unit 370 measures the waveform signal of the first differential signal FM1 and the second differential signal FM2.
Please refer to Fig. 2, Fig. 4 a and Fig. 4 b, close to 100 end parallel filtering capacitor cell 210 of power control unit, 220,
230, because it is broken through in 40-60Mhz frequency, we can be attempted using big pf grades of capacitor or low nf grades of capacitor, by not
It is disconnected to attempt, it is final to determine in left and right acoustic channels and mic parallel connection 680pf capacitor (first capacitor unit 210, the second capacitor list of such as Fig. 2
First 220, third capacitor cell 230).It is not related with headset body and for uplink, our audios in galley
(the second resistance unit 320 of such as figure 2 above) plus magnetic bead on jack, break-through point on uplink also in 40-60Mhz range, we
The magnetic bead of resonance point high impedance in this frequency range can be used, inhibition interference effect in this way can be more preferable, and final choice is the
The magnetic bead of two resistance unit positions and 100Mhz 600ohm.After retesting, sound press value fully meets requirement.
Fig. 5 is that the tested speech of one embodiment of the invention breaks through the method for measurement flow chart of signal circuit.Referring to FIG. 5,
Process S500: providing a power control unit, and one first node of a first end electric property coupling of the power control unit is described
One second node of a second end electric property coupling of power control unit, a third end electric property coupling one of the power control unit
Third node, the one first resistor unit of a 4th end electric property coupling of the power control unit.
Referring to FIG. 5, process S510: providing a first capacitor unit, one end electric property coupling of the first capacitor unit
The third node, the other end electrical ground of the first capacitor unit.
Referring to FIG. 5, process S520: providing one second capacitor cell, one end electric property coupling of second capacitor cell
The second node, the other end electrical ground of second capacitor cell.
Referring to FIG. 5, process S530: providing a third capacitor cell, one end electric property coupling of the third capacitor cell
The first node, the other end electrical ground of the third capacitor cell.
Referring to FIG. 5, process S540: providing a second resistance unit, one end electric property coupling of the second resistance unit
The first resistor unit, the other end electrical ground of the second resistance unit.
Referring to FIG. 5, process S550: providing a 3rd resistor unit, one end electric property coupling of the 3rd resistor unit
The first node, one first speaker unit of other end electric property coupling of the 3rd resistor unit.
Referring to FIG. 5, process S560: providing one the 4th resistance unit, one end electric property coupling of the 4th resistance unit
The second node, one second speaker unit of other end electric property coupling of the 4th resistance unit.
Referring to FIG. 5, process S570: providing one the 5th resistance unit, one end electric property coupling of the 5th resistance unit
The third node, the one third speaker unit of other end electric property coupling of the 5th resistance unit.
Referring to FIG. 5, process S580: providing one the 6th resistance unit, one end electric property coupling of the 6th resistance unit
One 1.8 volts of power control unit, the second speaker unit described in the other end electric property coupling of the 6th resistance unit.
Referring to FIG. 5, process S590: providing one the 7th resistance unit, one end of the 7th resistance unit electrically receives
One first differential signal, the other end electrical ground of the 7th resistance unit.
Referring to FIG. 5, process S600: providing one the 4th capacitor cell, one end of the 4th capacitor cell electrically receives
One second differential signal, second resistance unit described in the other end electric property coupling of the 4th capacitor cell.
Referring to FIG. 5, process S610: providing a diode, one end electric property coupling 1 of the diode the
Four speaker units, the other end electrical ground of the diode.
Referring to FIG. 5, process S620: through the second resistance unit and the 4th capacitor and the 7th resistance list
The connection of member measures the waveform signal of first differential signal and second differential signal.
The invention patent connects filter capacitor through power control unit, and by constantly testing, final to determine in left and right
Sound channel and microphone aperture parallel connection 680pf capacitance.And audio jack (Audio jack) on a printed circuit adds magnetic bead, and
By the break-through point of the audio after comprehensive test instrument end reception radiofrequency signal demodulation in 40-60Mhz range, and resonance point can be used and exist
The magnetic bead of high impedance in this frequency range, inhibition interference effect in this way will be more preferable, thus sound press value is made to fully meet requirement.
" in some embodiments " and " in various embodiments " terms are used repeatedly etc..The term is not usually
Refer to identical embodiment；But it may also mean that identical embodiment.The words such as "comprising", " having " and " comprising " are synonymous
Word, unless its context meaning shows other meanings.
The above is only the embodiment of the invention patent, not makes any form of restriction to the invention patent, though
Right the invention patent is disclosed above with specific embodiment, patent that however, it is not intended to limit the invention, and any to be familiar with sheet special
The technical staff of industry is not departing from the invention patent technical proposal scope, is making when using the technology contents of the disclosure above
A little change or the equivalent embodiment for being modified to equivalent variations, but all contents without departing from the invention patent technical solution, according to
According to the technical spirit of the invention patent any simple modification, equivalent change and modification to the above embodiments, still fall within
In the range of the invention patent technical solution.
Claims (10)
1. a kind of tested speech breaks through signal circuit characterized by comprising
One power control unit, one first node of a first end electric property coupling of the power control unit, the power supply control
One second node of a second end electric property coupling of unit, the one third section of a third end electric property coupling of the power control unit
Point, the one first resistor unit of a 4th end electric property coupling of the power control unit；
One first capacitor unit, third node described in one end electric property coupling of the first capacitor unit, the first capacitor list
The other end electrical ground of member；
One second capacitor cell, second node described in one end electric property coupling of second capacitor cell, the second capacitor list
The other end electrical ground of member；And
One third capacitor cell, first node described in one end electric property coupling of the third capacitor cell, the third capacitor list
The other end electrical ground of member.
2. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that a second resistance unit is further included,
The other end of first resistor unit described in one end electric property coupling of the second resistance unit, the second resistance unit is electrically connected with
Ground.
3. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that a 3rd resistor unit is further included,
First node described in one end electric property coupling of the 3rd resistor unit, the other end electric property coupling one of the 3rd resistor unit
First speaker unit.
4. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that one the 4th resistance unit is further included,
Second node described in one end electric property coupling of 4th resistance unit, the other end electric property coupling one of the 4th resistance unit
Second speaker unit.
5. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that one the 5th resistance unit is further included,
Third node described in one end electric property coupling of 5th resistance unit, the other end electric property coupling one of the 5th resistance unit
Third speaker unit.
6. tested speech as claimed in claim 4 breaks through signal circuit, which is characterized in that one the 6th resistance unit is further included,
One 1.8 volts of one end electric property coupling of power control unit of the 6th resistance unit, the 6th resistance unit it is another
Hold the second speaker unit described in electric property coupling.
7. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that one the 7th resistance unit is further included,
One end of 7th resistance unit electrically receives one first differential signal, and the other end of the 7th resistance unit is electrically connected with
Ground.
8. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that one the 4th capacitor cell is further included,
One end of 4th capacitor cell electrically receives one second differential signal, the other end electric property coupling of the 4th capacitor cell
The second resistance unit.
9. tested speech as described in claim 1 breaks through signal circuit, which is characterized in that further include a diode, institute
State the 4th speaker unit of one end electric property coupling 1 of diode, the other end electrical ground of the diode.
10. the method for measurement that a kind of tested speech breaks through signal circuit characterized by comprising
One power control unit, one first node of a first end electric property coupling of the power control unit, the power supply are provided
One second node of a second end electric property coupling of control unit, one third of a third end electric property coupling of the power control unit
Node, the one first resistor unit of a 4th end electric property coupling of the power control unit；
One first capacitor unit, third node described in one end electric property coupling of the first capacitor unit, first electricity are provided
Hold the other end electrical ground of unit；
One second capacitor cell, second node described in one end electric property coupling of second capacitor cell, second electricity are provided
Hold the other end electrical ground of unit；
One third capacitor cell, first node described in one end electric property coupling of the third capacitor cell, the third electricity are provided
Hold the other end electrical ground of unit；
One second resistance unit is provided, first resistor unit described in one end electric property coupling of the second resistance unit, described
The other end electrical ground of two resistance units；
One 3rd resistor unit, first node described in one end electric property coupling of the 3rd resistor unit, the third electricity are provided
Hinder one first speaker unit of other end electric property coupling of unit；
One the 4th resistance unit, second node described in one end electric property coupling of the 4th resistance unit, the 4th electricity are provided
Hinder one second speaker unit of other end electric property coupling of unit；
One the 5th resistance unit, third node described in one end electric property coupling of the 5th resistance unit, the 5th electricity are provided
Hinder the one third speaker unit of other end electric property coupling of unit；
One the 6th resistance unit is provided, one 1.8 volts of one end electric property coupling of power control unit of the 6th resistance unit,
Second speaker unit described in the other end electric property coupling of 6th resistance unit；
One the 7th resistance unit is provided, one end of the 7th resistance unit electrically receives one first differential signal, and the described 7th
The other end electrical ground of resistance unit；
One the 4th capacitor cell is provided, one end of the 4th capacitor cell electrically receives one second differential signal, and the described 4th
Second resistance unit described in the other end electric property coupling of capacitor cell；
One diode, the 4th speaker unit of one end electric property coupling 1 of the diode, the diode list are provided
The other end electrical ground of member；And
Through the connection of the second resistance unit and the 4th capacitor and the 7th resistance unit, it is poor to measure described first
Divide the waveform signal of signal and second differential signal.
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| CN201910373965.8A CN110113469B (en) | 2019-05-07 | 2019-05-07 | Circuit for testing voice breakthrough signal and measuring method thereof |
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| CN201910373965.8A CN110113469B (en) | 2019-05-07 | 2019-05-07 | Circuit for testing voice breakthrough signal and measuring method thereof |
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| US20140294184A1 (en) * | 2013-04-01 | 2014-10-02 | Acer Incorporated | Detection circuit |
| CN104469615A (en) * | 2014-12-15 | 2015-03-25 | 上海华勤通讯技术有限公司 | Terminal device and earphone circuit thereof |
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| CN2875008Y (en) * | 2005-05-12 | 2007-02-28 | 上海环达计算机科技有限公司 | Electromagnetic interference preventing circuit of audio interface |
| CN101488999A (en) * | 2008-01-15 | 2009-07-22 | 诚实科技股份有限公司 | Test port processing method capable of lowering noise interference |
| CN102136273A (en) * | 2010-01-21 | 2011-07-27 | 比亚迪股份有限公司 | Audio processing device and method of electronic equipment |
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| CN110113469B (en) | 2021-07-06 |
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