CN109068256A - Detection method, system, microphone and the intelligent sound box of microphone - Google Patents
Detection method, system, microphone and the intelligent sound box of microphone Download PDFInfo
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- CN109068256A CN109068256A CN201811174236.1A CN201811174236A CN109068256A CN 109068256 A CN109068256 A CN 109068256A CN 201811174236 A CN201811174236 A CN 201811174236A CN 109068256 A CN109068256 A CN 109068256A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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Abstract
The invention discloses the detection method of microphone, system, microphone and intelligent sound box, belongs to and relate to Audiotechnica field.The detection method of microphone is applied in microphone, and the microphone includes at least a pair of of audio receiving unit, and the detection method includes: to obtain the triggering level of at least a pair of of audio receiving unit；Obtain the digital signal of at least a pair of of audio receiving unit output；The digital signal is parsed according to the triggering level of at least a pair of of audio receiving unit to obtain the working condition of at least a pair of of audio receiving unit.The present invention parses to obtain the working condition of corresponding audio receiving unit the digital signal of every a pair of of audio receiving unit output according to the triggering level of every a pair of of audio receiving unit, to realize the purpose of the audio receiving unit of investigation positioning failure.
Description
Technical field
The present invention relates to Audiotechnica field more particularly to a kind of detection method of microphone, system, microphone and intelligence
Speaker.
Background technique
Based on PDM (pulse code modulation, pulse density modulated) signal characteristic (referring to Fig. 1), control unit
A DATA interface can connect two microphone chips (MIC0 and MIC1), since the DATA pin of microphone has parasitic electricity
Hold, if the interface rosin joint or damage, another good PDM interface chip of PDM interface chip will be in high configuration (High
Z) state holding and signal as before, leading to two PDM interface chips, (MIC0 is as the data of MIC1).At present for
If multiple microphone chips have Mike's rosin joint to be difficult to check and position to the microphone chip of failure, and then influence speech recognition
And user experience effect.
Summary of the invention
Aiming at the problem that can not carry out investigation positioning to microphone chip failure, one kind is now provided and aims to check and is determined
Detection method, system, microphone and the intelligent sound box of the microphone of position failure microphone chip.
A kind of detection method of microphone is applied in microphone, and the microphone includes that at least a pair of of audio receives list
Member, the detection method include the following steps:
Obtain the triggering level of at least a pair of of audio receiving unit；
Obtain the digital signal of at least a pair of of audio receiving unit output；
The digital signal is parsed to obtain according to the triggering level of at least a pair of of audio receiving unit
State the working condition of at least a pair of of audio receiving unit.
Preferably, the triggering level of the audio receiving unit at least a pair of of according to solves the digital signal
It analyses to obtain the working condition of at least a pair of of audio receiving unit, comprising:
When the data of even number 2i bit and odd number 2i+1 bit in the data of predetermined width in the digital signal
Data are identical, and at least the data of a bit and other even bit positions data are not in the data of the even bit position
Together, then triggering level is that the working condition of low level audio receiving unit is in event at least a pair of of audio receiving unit
Hinder shape；
Wherein, i is integer, i=0,1,2 ... ..., 31.
Preferably, the triggering level of the audio receiving unit at least a pair of of according to solves the digital signal
It analyses to obtain the working condition of at least a pair of of audio receiving unit, comprising:
When the data of even number 2j bit and odd number 2j-1 bit in the data of predetermined width in the digital signal
Data are identical, and at least the data of a bit and other even bit positions data are not in the data of the even bit position
Together, then the working condition of audio receiving unit of the triggering level for high level is in event at least a pair of of audio receiving unit
Barrier state；
Wherein, j is integer, j=1,2 ... ..., 31.
Preferably, the triggering level of the audio receiving unit at least a pair of of according to solves the digital signal
It analyses to obtain the working condition of at least a pair of of audio receiving unit, comprising:
When the data of even number 2i bit and odd number 2i+1 bit in the data of predetermined width in the digital signal
Data are not identical, then two audio receiving units at least a pair of of audio receiving unit are in normal condition；
Wherein, i is integer, i=0,1,2 ... ..., 31.
The present invention also provides a kind of detection systems of microphone, are applied in microphone, and the microphone includes at least
A pair of of audio receiving unit, the detection system include:
First acquisition unit, for obtaining the triggering level of at least a pair of of audio receiving unit；
Second acquisition unit, for obtaining the digital signal of at least a pair of of audio receiving unit output；
Resolution unit, for being carried out according to the triggering level of at least a pair of of audio receiving unit to the digital signal
It parses to obtain the working condition of at least a pair of of audio receiving unit.
Preferably, the resolution unit, comprising:
Extraction module, for extracting the data and surprise of the even bit position in the digital signal in the data of predetermined width
The data of number bit；
Identification module, for judging the data and odd number of even bit position in the data of predetermined width in the digital signal
Whether the data of bit identical, when in the digital signal in the data of predetermined width even number 2i bit data and odd number
The data of 2i+1 bit are identical, and at least data of a bit and other even numbers in the data of the even bit position
Number of bits according to difference, then at least a pair of of audio receiving unit triggering level be low level audio receiving unit work
Make state and is in failure shape；
Wherein, i is integer, i=0,1,2 ... ..., 31.
Preferably, the identification module is used to judge in the digital signal even bit position in the data of predetermined width
Whether data and the data of odd bits are identical, when even number 2j bit in the data of predetermined width in the digital signal
Data are identical as the data of odd number 2j-1 bit, and in the data of the even bit position at least the data of a bit with
Other even bit positions data are different, then triggering level is that the audio of high level connects at least a pair of of audio receiving unit
The working condition for receiving unit is in malfunction；
Wherein, j is integer, j=1,2 ... ..., 31.
Preferably, the identification module is used to judge in the digital signal even bit position in the data of predetermined width
Whether data and the data of odd bits are identical, when even number 2i bit in the data of predetermined width in the digital signal
Data are not identical as the data of odd number 2i+1 bit, then two audios at least a pair of of audio receiving unit receive single
Member is in normal condition；
Wherein, i is integer, i=0,1,2 ... ..., 31.
The present invention also provides a kind of microphones, comprising:
At least a pair of of audio receiving unit, for audio analog signals to be converted to digital signal；
Control unit connects at least a pair of of audio receiving unit, single for receiving at least a pair of of audio reception
The digital signal that member is sent；
Further include:
First acquisition unit, connection at least a pair of of audio receiving unit connect for obtaining at least a pair of of audio
Receive the triggering level of unit；
Second acquisition unit connects described control unit, for obtaining at least a pair of of audio receiving unit output
Digital signal；
Resolution unit, for being carried out according to the triggering level of at least a pair of of audio receiving unit to the digital signal
It parses to obtain the working condition of at least a pair of of audio receiving unit.
The present invention also provides a kind of intelligent sound boxes, including such as above-mentioned microphone.
Above-mentioned technical proposal the utility model has the advantages that
In the technical program, the present invention receives every a pair of of audio according to the triggering level of every a pair of of audio receiving unit single
The digital signal of member output is parsed to obtain the working condition of corresponding audio receiving unit, to realize investigation positioning event
The purpose of the audio receiving unit of barrier.
Detailed description of the invention
Fig. 1 is the circuit diagram of existing microphone；
Fig. 2 is timing diagram of the MIC0 and MIC1 when being normal condition；
Fig. 3 be MIC0 be in normal condition, MIC1 interface rosin joint timing diagram；
Fig. 4 is that interface rosin joint, the MIC1 of MIC0 are in the timing diagram of normal condition；
Fig. 5 is a kind of method flow diagram of embodiment of the detection method of microphone of the present invention；
Fig. 6 is a kind of module map of embodiment of the detection system of microphone of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
For having the microphone apparatus of multipair microphone chip, said as follows by taking a pair of of microphone chip as an example
It is bright: when two microphone chips (MIC0 and MIC1) are all normal working conditions, with reference to as Figure 1-Figure 2:
The data of DATA are normal: 1001011001111111, wherein the data of MIC0 are:
1 0 0 1 0 1 1 1；The data of MIC1 are: 01101111.
It should be noted that 2 foot of pin of MIC0 connects high level, the data of MIC0 can be in the clock signal of 4 foot of pin
CLOCK is exported when being rising edge；2 foot of pin of MIC1 connects low level, and the data of MIC1 can be in the clock signal of 4 foot of pin
CLOCK is exported when being failing edge.
If the microphone chip rosin joint (i.e. MIC1 rosin joint) of odd number, the rising of the failing edge and next cycle in last period
The data on edge are the same, the data in two channels can a little difference, (amplitude will not be just the same, but difference is very small), and
And good microphone chip is tested can also fall in this section sometimes, is difficult to judge.With reference to as shown in Figure 3:
The data of DATA are: 1100001100111111；
Wherein, the data of MIC0 are: 10010111；The data of MIC1 are that (due to rosin joint, the data of MIC1 are
The result that MIC0 is kept): 10010111；
It should be noted that grey parts indicate the uncertain part of low and high level in Fig. 3.
If the microphone chip rosin joint (i.e. MIC0 rosin joint) of even number, the data of failing edge can as rising edge data, two
The data in a channel can just the same (amplitude is just the same), can not distinguish the microphone chip of failure.With reference to as shown in Figure 4:
The data of DATA are:? 001111001111111；
Wherein, the data of MIC0 are (due to rosin joint, the data of MIC0 are the results that MIC1 is kept):? 011011
1；The data of MIC1 are: 01101111
It should be noted that grey parts indicate the uncertain part of low and high level in Fig. 4, "? " indicate that data are uncertain
(since first data is that rising edge obtains, so the data of first MIC0 are due to rosin joint for the scene of MIC0 rosin joint
State is indefinite).
Based on above-mentioned the problem of being difficult fixation and recognition microphone chip failure welding, it can check and determine the present invention provides one kind
Detection method, system and the microphone of the microphone of position failure microphone chip.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
As shown in figure 5, a kind of detection method of microphone, is applied in microphone, the microphone includes at least a pair of
Audio receiving unit, the detection method include the following steps:
S1. the triggering level of at least a pair of of audio receiving unit is obtained；
S2. the digital signal of at least a pair of of audio receiving unit output is obtained；
S3. the digital signal is parsed to obtain according to the triggering level of at least a pair of of audio receiving unit
The working condition of at least a pair of of audio receiving unit；
Further, as the data of even number 2i bit and odd number 2i+1 in the data of predetermined width in the digital signal
The data of bit are identical, and at least data of a bit and other even bits in the data of the even bit position
Position data are different, then at least a pair of of audio receiving unit triggering level be low level audio receiving unit work shape
State is in failure shape；
Wherein, i is integer, i=0,1,2 ... ..., 31.
It should be noted that the data of predetermined width can be 64bit, the audio receiving unit uses impulse density tune
Coremaking piece (that is: PDM interface chip).
For example and without limitation, when parsing to digital signal, the DATA pin for extracting control unit respectively is connect
The even bit position of the data-signal of receipts and odd bits, wherein even bit position (i.e. MIC0 occur digital signal) are as follows:
Bit [0]/bit [2]/bit [4]/bit [6]/bit [8]/bit [10]/.../bit [62], (i.e. MIC1 occurs odd bits
Digital signal) are as follows: bit [1]/bit [3]/bit [5]/bit [7]/bit [9]/bit [11]/.../bit [63].With judgement
Whether the data of even bit position and the data of odd bits are identical, if they are the same, and it is not complete in the data of even bit position
It is 1, or is all 0, indicates that the working condition for connecing low level audio receiving unit is in malfunction (rosin joint or damage).
It should be noted that SOC chip can be used in control unit.
When the data of even number 2j bit and odd number 2j-1 bit in the data of predetermined width in the digital signal
Data are identical, and at least the data of a bit and other even bit positions data are not in the data of the even bit position
Together, then the working condition of audio receiving unit of the triggering level for high level is in event at least a pair of of audio receiving unit
Barrier state；
Wherein, j is integer, j=1,2 ... ..., 31.
For example and without limitation, when parsing to digital signal, the DATA pin for extracting control unit respectively is connect
The even bit position of the data-signal of receipts and odd bits, wherein even bit position (i.e. MIC0 occur digital signal) are as follows:
Bit [2]/bit [4]/bit [6]/bit [8]/bit [10]/.../bit [62], odd bits (the i.e. number that MIC1 occurs
Signal) are as follows: bit [1]/bit [3]/bit [5]/bit [7]/bit [9]/bit [11]/.../bit [61].To judge even ratio
Whether the data of special position and the data of odd bits are identical, if they are the same, and 1 are not all in the data of even bit position, or
It is all 0, indicates that the working condition for the audio receiving unit for connecing high level is in malfunction (rosin joint or damage)
It should be noted that SOC chip can be used in control unit.
When the data of even number 2i bit and odd number 2i+1 bit in the data of predetermined width in the digital signal
Data are not identical, then two audio receiving units at least a pair of of audio receiving unit are in normal condition；
Wherein, i is integer, i=0,1,2 ... ..., 31.
For example and without limitation, when parsing to digital signal, the DATA pin for extracting control unit respectively is connect
The even bit position of the data-signal of receipts and odd bits, wherein even bit position (i.e. MIC0 occur digital signal) are as follows:
Bit [0]/bit [2]/bit [4]/bit [6]/bit [8]/bit [10]/.../bit [62], (i.e. MIC1 occurs odd bits
Digital signal) are as follows: bit [1]/bit [3]/bit [5]/bit [7]/bit [9]/bit [11]/.../bit [63].With judgement
Whether the data of even bit position and the data of odd bits are identical, if not identical, indicate that two audio receiving units are all
Normal condition.
It should be noted that SOC chip can be used in control unit.
In the present embodiment, every a pair of of audio receiving unit is exported according to the triggering level of every a pair of of audio receiving unit
Digital signal parsed to obtain the working condition of corresponding audio receiving unit, thus realize investigation positioning failure sound
The purpose of frequency receiving unit.
As shown in fig. 6, being applied in microphone, the Mike the present invention also provides a kind of detection system of microphone
Bellows chamber includes at least a pair of of audio receiving unit, and the detection system includes: first acquisition unit 1, second acquisition unit 2 and parsing
Unit 3.
Wherein, first acquisition unit 1, for obtaining the triggering level of at least a pair of of audio receiving unit；
Second acquisition unit 2, for obtaining the digital signal of at least a pair of of audio receiving unit output；
Resolution unit 3, for according to the triggering level of at least a pair of of audio receiving unit to the digital signal into
Row is parsed to obtain the working condition of at least a pair of of audio receiving unit.
In the present embodiment, every a pair of of audio receiving unit is exported according to the triggering level of every a pair of of audio receiving unit
Digital signal parsed to obtain the working condition of corresponding audio receiving unit, thus realize investigation positioning failure sound
The purpose of frequency receiving unit also has the used time short, and detection efficiency is high, the high advantage of accuracy.
In a preferred embodiment, the resolution unit 3 can include:
Extraction module, for extracting the data and surprise of the even bit position in the digital signal in the data of predetermined width
The data of number bit；
Identification module, for judging the data and odd number of even bit position in the data of predetermined width in the digital signal
Whether the data of bit identical, when in the digital signal in the data of predetermined width even number 2i bit data and odd number
The data of 2i+1 bit are identical, and at least data of a bit and other even numbers in the data of the even bit position
Number of bits according to difference, then at least a pair of of audio receiving unit triggering level be low level audio receiving unit work
Make state and is in failure shape；
Wherein, i is integer, i=0,1,2 ... ..., 31.
In a preferred embodiment, the identification module is used to judge even in the data of predetermined width in the digital signal
Whether the data of number bits and the data of odd bits are identical, when even number in the data of predetermined width in the digital signal
The data of 2j bit are identical as the data of odd number 2j-1 bit, and an at least bit in the data of the even bit position
The data of position are different from other even bit position data, then triggering level is high electricity at least a pair of of audio receiving unit
The working condition of flat audio receiving unit is in malfunction；
Wherein, j is integer, j=1,2 ... ..., 31.
In a preferred embodiment, the identification module is used to judge even in the data of predetermined width in the digital signal
Whether the data of number bits and the data of odd bits are identical, when even number in the data of predetermined width in the digital signal
The data of 2i bit are not identical as the data of odd number 2i+1 bit, then two at least a pair of of audio receiving unit
Audio receiving unit is in normal condition；
Wherein, i is integer, i=0,1,2 ... ..., 31.
The present invention also provides a kind of microphones, comprising:
At least a pair of of audio receiving unit, for audio analog signals to be converted to digital signal；
Control unit connects at least a pair of of audio receiving unit, single for receiving at least a pair of of audio reception
The digital signal that member is sent；
Microphone may also include that
First acquisition unit, connection at least a pair of of audio receiving unit connect for obtaining at least a pair of of audio
Receive the triggering level of unit；
Second acquisition unit connects described control unit, for obtaining at least a pair of of audio receiving unit output
Digital signal；
Resolution unit, for being carried out according to the triggering level of at least a pair of of audio receiving unit to the digital signal
It parses to obtain the working condition of at least a pair of of audio receiving unit.
The present invention also provides a kind of intelligent sound boxes, including such as above-mentioned microphone.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of detection method of microphone is applied in microphone, the microphone includes at least a pair of of audio receiving unit,
It is characterized in that, the detection method includes the following steps:
Obtain the triggering level of at least a pair of of audio receiving unit；
Obtain the digital signal of at least a pair of of audio receiving unit output；
The digital signal is parsed according to the triggering level of at least a pair of of audio receiving unit described extremely with acquisition
The working condition of few a pair of audio receiving unit.
2. the detection method of microphone according to claim 1, which is characterized in that the audio at least a pair of of according to
The triggering level of receiving unit parses the digital signal to obtain the work of at least a pair of of audio receiving unit
State, comprising:
When in the digital signal in the data of predetermined width the data of even number 2i bit and odd number 2i+1 bit data
It is identical, and at least the data of a bit are different from other even bit position data in the data of the even bit position,
Then triggering level is that the working condition of low level audio receiving unit is in failure at least a pair of of audio receiving unit
Shape；
Wherein, i is integer, i=0,1,2 ... ..., 31.
3. the detection method of microphone according to claim 1, which is characterized in that the audio at least a pair of of according to
The triggering level of receiving unit parses the digital signal to obtain the work of at least a pair of of audio receiving unit
State, comprising:
When in the digital signal in the data of predetermined width the data of even number 2j bit and odd number 2j-1 bit data
It is identical, and at least the data of a bit are different from other even bit position data in the data of the even bit position,
Then the working condition of audio receiving unit of the triggering level for high level is in failure at least a pair of of audio receiving unit
State；
Wherein, j is integer, j=1,2 ... ..., 31.
4. the detection method of microphone according to claim 1, which is characterized in that the audio at least a pair of of according to
The triggering level of receiving unit parses the digital signal to obtain the work of at least a pair of of audio receiving unit
State, comprising:
When in the digital signal in the data of predetermined width the data of even number 2i bit and odd number 2i+1 bit data
Not identical, then two audio receiving units at least a pair of of audio receiving unit are in normal condition；
Wherein, i is integer, i=0,1,2 ... ..., 31.
5. a kind of detection system of microphone is applied in microphone, the microphone includes at least a pair of of audio receiving unit,
It is characterized in that, the detection system includes:
First acquisition unit, for obtaining the triggering level of at least a pair of of audio receiving unit；
Second acquisition unit, for obtaining the digital signal of at least a pair of of audio receiving unit output；
Resolution unit, for being parsed according to the triggering level of at least a pair of of audio receiving unit to the digital signal
To obtain the working condition of at least a pair of of audio receiving unit.
6. the detection system of microphone according to claim 5, which is characterized in that the resolution unit, comprising:
Extraction module, for extracting the data and odd number ratio of the even bit position in the digital signal in the data of predetermined width
The data of special position；
Identification module, for judging the data and odd bit of even bit position in the data of predetermined width in the digital signal
Whether the data of position are identical, as the data of even number 2i bit and odd number 2i+1 in the data of predetermined width in the digital signal
The data of bit are identical, and at least data of a bit and other even bits in the data of the even bit position
Position data are different, then at least a pair of of audio receiving unit triggering level be low level audio receiving unit work shape
State is in failure shape；
Wherein, i is integer, i=0,1,2 ... ..., 31.
7. the detection system of microphone according to claim 6, which is characterized in that the identification module is described for judging
Whether the data of even bit position and the data of odd bits are identical in the data of predetermined width in digital signal, when the number
The data of even number 2j bit are identical as the data of odd number 2j-1 bit in the data of predetermined width in word signal, and the idol
At least the data of a bit are different from other even bit position data in the data of number bit, then described at least a pair of
Triggering level is that the working condition of the audio receiving unit of high level is in malfunction in audio receiving unit；
Wherein, j is integer, j=1,2 ... ..., 31.
8. the detection system of microphone according to claim 6, which is characterized in that the identification module is described for judging
Whether the data of even bit position and the data of odd bits are identical in the data of predetermined width in digital signal, when the number
The data of even number 2i bit are not identical as the data of odd number 2i+1 bit in the data of predetermined width in word signal, then described
Two audio receiving units at least a pair of of audio receiving unit are in normal condition；
Wherein, i is integer, i=0,1,2 ... ..., 31.
9. a kind of microphone, comprising:
At least a pair of of audio receiving unit, for audio analog signals to be converted to digital signal；
Control unit, connection at least a pair of of audio receiving unit, for receiving at least a pair of of audio receiving unit hair
The digital signal sent；
It is characterized by further comprising:
First acquisition unit connects at least a pair of of audio receiving unit, single for obtaining at least a pair of of audio reception
The triggering level of member；
Second acquisition unit connects described control unit, for obtaining the number of at least a pair of of audio receiving unit output
Signal；
Resolution unit, for being parsed according to the triggering level of at least a pair of of audio receiving unit to the digital signal
To obtain the working condition of at least a pair of of audio receiving unit.
10. a kind of intelligent sound box, including microphone as claimed in claim 9.
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| CN110995914A (en) * | 2019-12-02 | 2020-04-10 | 上海创功通讯技术有限公司 | Double-microphone testing method and device |
| CN112333616A (en) * | 2020-11-27 | 2021-02-05 | 深圳市同博威科技有限公司 | MEMS microphone module |
| CN113301490A (en) * | 2021-05-26 | 2021-08-24 | 四川长虹电器股份有限公司 | Method for detecting PDM silicon microphone array |
| CN114466299A (en) * | 2020-11-10 | 2022-05-10 | 北京君正集成电路股份有限公司 | Air tightness and insufficient solder joint detection method for multiple groups of microphones |
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