CN108664232A - A method of tapping the operation of microphone array analogue-key - Google Patents
A method of tapping the operation of microphone array analogue-key Download PDFInfo
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- CN108664232A CN108664232A CN201810384937.1A CN201810384937A CN108664232A CN 108664232 A CN108664232 A CN 108664232A CN 201810384937 A CN201810384937 A CN 201810384937A CN 108664232 A CN108664232 A CN 108664232A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/167—Audio in a user interface, e.g. using voice commands for navigating, audio feedback
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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Abstract
The present invention provides a kind of method of percussion microphone array analogue-key operation, including S1, setting and initializes percussion event opening flag position and timer；S2, using 10ms data as basic processing unit, read the gathered data of microphone；Whether S3, detection gathered data meet the variation characteristic of knocking, if satisfied, then entering S4；If not satisfied, adding ' 0 ' at the end of data sequence, and enter S5；S4, the zero-crossing rate for calculating gathered data, judge whether gathered data is knocking according to zero-crossing rate, if so, adding ' 1 ' at the end of data sequence；If not, adding ' 0 ' at the end of data sequence；S5, primary complete percussion event is intercepted out；S6, corresponding desired operation is searched for from map listing according to the percussion event of interception, and executes the desired operation.The function that user it is expected execution is completed by tapping microphone to realize by the method for the invention, can effectively be overcome in the past by inconvenient caused by remote controller operation.
Description
Technical field
The present invention relates to voice communication technology field, more particularly to a kind of side tapping the operation of microphone array analogue-key
Method.
Background technology
In conference system, the function of executing typically it is expected to complete user by remote controller operation, such as exports sound
Amount is adjusted, and is moved to left, is moved to right the operations such as feature list, and by remote controller operation, not only keypress function is clear, and easy to operate, at
This is low；But by remote controller operation, there are following defects：1, when remote controler breaks down, the normal of conferencing function can be influenced
It uses；2, when there are more people to need operation, remote controler inconvenience is transmitted, usage experience is influenced.Certainly, there is also have in the prior art
More convenient mode, for example, relevant operation can be realized by touch screen, more advanced can be by speech recognition come real
Existing, still, the cost that either touch screen is realized or speech recognition is realized is relatively high, and especially speech recognition is realized,
Great amount of samples is needed to train, development cost higher.
Invention content
The technical problem to be solved in the present invention is to provide a kind of method of percussion microphone array analogue-key operation, lead to
It crosses this method and completes the function that user it is expected execution by tapping microphone to realize, to effectively overcome in the past by distant
It is inconvenient caused by device operation to control.
The invention is realized in this way：A method of the operation of microphone array analogue-key being tapped, the method includes such as
Lower step：
Step S1, percussion event opening flag position and timer are set, and initialize percussion event opening flag position and
Timer；
Step S2, using 10ms data as basic processing unit, the gathered data of microphone is read；
Step S3, whether the gathered data that detection is read meets the variation characteristic of knocking, if satisfied, then entering step
S4；If not satisfied, then adding ' 0 ' at the end of data sequence, and enter step S5；
Step S4, the zero-crossing rate of gathered data is calculated, and judges whether gathered data is to strike according to calculated zero-crossing rate
Signal is hit, and if it is, adds ' 1 ' at the end of data sequence；If it is not, then adding ' 0 ' at the end of data sequence；
Step S5, primary complete percussion event is intercepted out；
Step S6, according to the percussion event of interception, data sequence is parsed, and searches for corresponding expectation behaviour from map listing
Make, and executes the desired operation.
Further, the step S3 is specially：
The a reference value D1 for meeting knocking variation characteristic is set；
By the gathered data of reading using the maximum value in every 1ms data as sampled point, amounts to and choose 10 sampled points, and
Calculate the difference between maxima and minima in this 10 sampled points；Meanwhile by calculated difference and a reference value D1 into
Row compares, and if difference is more than a reference value D1, is judged to meeting the variation characteristic of knocking, and enter step S4；Such as
Fruit difference is less than or equal to a reference value D1, then is judged to being unsatisfactory for the variation characteristic of knocking, at this time need to be at the end of data sequence
Tail addition ' 0 ', and enter step S5.
Further, the value range of a reference value D1 is：0.5-0.8.
Further, the step S4 is specially：
The fundamental frequency value D2 of knocking is set；
The maximum sampled value v of the gathered data and time t of maximum sampled value appearance is obtained, and centered on time t, it is past
The left minimal instant t_left for obtaining sampled value and being more than k*v, turns right and obtains the maximum moment t_right that sampled value is more than k*v,
In, k is used to determine the range of signal that zero-crossing rate calculates, and calculates minimal instant t_left to maximum moment t_right ranges
The zero passage number z of interior gathered data；Meanwhile it calculating z/ (t_right-t_left) and obtaining frequency values, and the frequency values that will be obtained
It is compared with fundamental frequency value D2, and if frequency values are more than fundamental frequency value D2, gathered data is determined as knocking, and in number
' 1 ' is added according to the end of sequence；If frequency values are less than or equal to fundamental frequency value D2, gathered data is determined as non-knocking,
And add ' 0 ' at the end of data sequence.
Further, the value range of the fundamental frequency value D2 is：25-50 times/ms.
Further, the value range of the k is：0.2~0.4.
Further, the step S5 is specially：
The primary complete duration T 1 for tapping event is set；
When detecting first knocking, percussion event opening flag position is enabled to be equal to 1, and starts interception and tap thing
Part, meanwhile, start timer and proceeds by timing；
Judge whether the time of timer is equal to the duration T 1 of setting, and if it is, terminates to tapping event
Interception, while percussion event opening flag position and timer are initialized, S6 is entered step later；If it is not, then entering step S2.
Further, the value range of the duration T 1 is：4-5s.
Further, the step S6 is specially：
It formulates the map listing of percussion event and desired operation and is preserved；Maximum time interval T2 is set；Work as interception
After complete primary complete percussion event, start to parse data sequence, and by primary complete percussion event resolve to 2 digit d1 with
D2 is specifically included：
The primary complete time interval tapped in event with the presence or absence of an adjacent knocking of detection is more than setting
Maximum time interval T2, if so, using the center time point between the two knockings as cut-point, when by cut-point the last period
Between accumulation number of taps be denoted as d1, the accumulation number of taps of a period of time after cut-point is denoted as d2；If it is not, then will hit against thing
Accumulation number of taps in part is denoted as d1, and d2 is denoted as 0；
After having parsed percussion event, corresponding expectation is searched out from map listing according to the d1 and d2 that parse and is grasped
Make, and executes the desired operation；Meanwhile after having executed desired operation, clear data sequence.
Further, the value range of the maximum time interval T2 is：0.5-1s.
The invention has the advantages that：1, detection is tapped by simple microphone and it is expected the behaviour executed to complete user
To make, it is inconvenient caused by remote controler or remote controler failure to need to transmit when can not only overcome previous more people's operations, and
And there is preferable function expansibility, it operates also particularly convenient；2, the microphone needed by conference system itself is come real
Existing desired function can greatly reduce cost without in addition development hardware support again.
Description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of execution flow chart for the method tapping the operation of microphone array analogue-key of the present invention.
Specific implementation mode
Specific embodiment one：
It please refers to shown in Fig. 1, a kind of preferred embodiment for the method tapping the operation of microphone array analogue-key of the present invention, institute
The method of stating includes the following steps：
Step S1, percussion event opening flag position start and timer timer are set, and initialize percussion event and open
Beginning flag bit and timer, even start=0, timer=0；
Step S2, using 10ms data as basic processing unit, the gathered data of microphone is read, i.e., is only read every time
The 10ms data of microphone；Since the duration of general voice is both greater than 10ms, and tap holding for the signal that microphone generates
The continuous time is less than 10ms, so, the gathered data that microphone is read using 10ms data as basic processing unit is taken, and divide
Analyse gathered data.
Step S3, whether the gathered data (10ms data) that detection is read meets the variation characteristic of knocking, if satisfied,
Then enter step S4；If not satisfied, then adding ' 0 ' at the end of data sequence, i.e., if the 10ms data read are unsatisfactory for striking
The variation characteristic of signal is hit, just adds ' 0 ' at the end of this 10ms data, to indicate in this 10ms data without knocking,
And enter step S5；
Since when tapping microphone, collected sound amplitude is all bigger, and signal duration is short, thus may be used
Know, knocking has signal elder generation rapid increase, the characteristic then quickly reduced.Fast with signal intensity based on knocking
Characteristic can tentatively judge gathered data.The step S3 is specially：
The a reference value D1 for meeting knocking variation characteristic is set；
By the gathered data of reading using the maximum value in every 1ms data as sampled point, amounts to and choose 10 sampled points, and
Calculate the difference between maxima and minima in this 10 sampled points；Meanwhile by calculated difference and a reference value D1 into
Row compares, and if difference is more than a reference value D1, is judged to meeting the variation characteristic of knocking, and enter step S4；Such as
Fruit difference is less than or equal to a reference value D1, then is judged to being unsatisfactory for the variation characteristic of knocking, at this time need to be at the end of data sequence
Tail addition ' 0 ', and enter step S5.
In the specific embodiment of the invention one, the value of a reference value D1 is 0.6.Due at specifically to data
When reason, usually all can in sampled point maximum value and minimum value be all normalized, therefore, the value of a reference value D1
It is the numerical value after a normalization.
Step S4, the zero-crossing rate of gathered data is calculated, and judges whether gathered data is to strike according to calculated zero-crossing rate
Signal is hit, and if it is, ' 1 ' is added at the end of data sequence, to indicate there is knocking in this 10ms data；If
It is no, then ' 0 ' is added at the end of data sequence, to indicate in this 10ms data without knocking；
Because the gathered data chosen is shorter (only 10ms data), can may just read voice beginning or
End signal, and the beginning of voice or end signal also have faster variation, therefore, it is necessary to further analyze determining signal
Whether it is knocking.Since knocking generally has higher frequency, and 0 axis can be frequently passed through, be based on this characteristic, we
It can be further determined whether as knocking by calculating zero-crossing rate.The step S4 is specially：
The fundamental frequency value D2 of knocking is set；
The maximum sampled value v of the gathered data and time t of maximum sampled value appearance is obtained, and centered on time t, it is past
The left minimal instant t_left for obtaining sampled value and being more than k*v, turns right and obtains the maximum moment t_right that sampled value is more than k*v,
In, k is used to determine the range of signal that zero-crossing rate calculates, and calculates minimal instant t_left to maximum moment t_right ranges
The zero passage number z of interior gathered data；Meanwhile it calculating z/ (t_right-t_left) and obtaining frequency values, and the frequency values that will be obtained
It is compared with fundamental frequency value D2, and if frequency values are more than fundamental frequency value D2 (illustrating that signal has higher frequency), it will acquisition
Data judging is knocking, and adds ' 1 ' at the end of data sequence；It, will if frequency values are less than or equal to fundamental frequency value D2
Gathered data is determined as non-knocking, and adds ' 0 ' at the end of data sequence.
In the specific embodiment of the invention one, the value of the fundamental frequency value D2 is 35 times/ms.The value of the k is 0.3.
Step S5, primary complete percussion event is intercepted out；
The step S5 is specially：
The primary complete duration T 1 for tapping event is set；
When detecting first knocking, percussion event opening flag position is enabled to be equal to 1, and starts interception and tap thing
Part, meanwhile, start timer and proceeds by timing；In the specific implementation, it if tapping event opening flag position is equal to 0, says
It is bright that first knocking is also not detected, just do not intercept percussion event at this time；
Judge whether the time of timer is equal to the duration T 1 of setting, and if it is, terminates to tapping event
Interception, while percussion event opening flag position and timer are initialized, even tapping the value of event opening flag position and timer
It is 0, to prepare the percussion event of interception next time, enters step S6 later；If it is not, then enter step S2, with after resuming studies
Take the gathered data of microphone.What needs to be explained here is that：After the completion of primary complete percussion event interception, it is also necessary to continue
It detects knocking, and the interception started to primary new percussion event is triggered with first knocking detected, and
After by duration T 1, just terminate the interception to primary new percussion event.
In the specific embodiment of the invention one, the value of the duration T 1 is 4.5s.
Step S6, according to the percussion event of interception, data sequence is parsed, and searches for corresponding expectation behaviour from map listing
Make, and executes the desired operation.
The step S6 is specially：
It formulates the map listing of percussion event and desired operation and is preserved；For example, the part mapping list formulated is such as
Under：
| d1d2 | Function maps |
| 11 | It returns |
| 12 | Confirm |
| 13 | It moves up |
| 21 | It moves down |
| 22 | It moves to left |
| 23 | It moves to right |
| 31 | Volume increases |
| 32 | Volume down |
Some shirtsleeve operations are only listed above, in the specific implementation, can customize more conference systems as needed
Function, map listing may be based on demand and be extended and change.
Maximum time interval T2 is set；After having intercepted primary complete percussion event, start to parse data sequence, and will
Primary complete percussion event resolves to 2 digit d1 and d2, specifically includes：
The primary complete time interval tapped in event with the presence or absence of an adjacent knocking of detection is more than setting
Maximum time interval T2, if so, using the center time point between the two knockings as cut-point, when by cut-point the last period
Between accumulation number of taps be denoted as d1, the accumulation number of taps of a period of time after cut-point is denoted as d2；If it is not, then will hit against thing
Accumulation number of taps in part is denoted as d1, and d2 is denoted as 0；Certainly, in the specific implementation, if in a complete percussion event
The time interval for more than two adjacent knockings inside occur is more than the maximum time interval T2 of setting, then can be by the percussion
Event is judged as invalid event；Since in the specific implementation, ' 1 ' in data sequence indicates knocking, and ' 0 ' indicates non-percussion
Signal, and every time using 10ms data as basic processing unit, therefore, when calculating the time interval of adjacent knocking,
Only needing will continuously occur in data sequence ' 0 ' number to be multiplied by 10ms can obtain, for example, continuously going out in data sequence
Show 80 ' 0 ', then, the time interval of adjacent knocking is：80*10ms=0.8s.
After having parsed percussion event, corresponding expectation is searched out from map listing according to the d1 and d2 that parse and is grasped
Make, and executes the desired operation；Meanwhile after having executed desired operation, clear data sequence.For example, according to above formulating
Part mapping list is carried out volume increase operation when the d1d2 parsed is 31.
In the specific embodiment of the invention one, the value of the maximum time interval T2 is 0.8s.
It is exactly the flow for realizing the operation of some analogue-key described in above step S1- steps S6, is being embodied
When, need cycle to execute above-mentioned steps S1- step S6, to realize that a variety of different analogue-keys operate.
Specific embodiment two：
It please refers to shown in Fig. 1, unlike specific embodiment one, in specific embodiment two, a reference value D1's
Value is 0.5；The value of the fundamental frequency value D2 is 25 times/ms, and the value of the k is 0.2；The value of the duration T 1 is
4s；The value of the maximum time interval T2 is 0.5s.
Specific embodiment three：
It please refers to shown in Fig. 1, unlike specific embodiment one, in specific embodiment three, a reference value D1's
Value is 0.8；The value of the fundamental frequency value D2 is 50 times/ms, and the value of the k is 0.4；The value of the duration T 1 is
5s；The value of the maximum time interval T2 is 1s.
In conclusion the invention has the advantages that：1, detection is tapped by simple microphone to complete user it is expected
The operation of execution needs to transmit caused by remote controler or remote controler failure when can not only overcome previous more people's operations
Inconvenience, and there is preferable function expansibility, it operates also particularly convenient；2, the Mike needed by conference system itself
Wind realizes desired function, without in addition development hardware is supported again, can greatly reduce cost.
Although specific embodiments of the present invention have been described above, those familiar with the art should manage
Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this
The technical staff in field modification and variation equivalent made by the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (10)
1. a kind of method tapping the operation of microphone array analogue-key, it is characterised in that：Described method includes following steps：
Step S1, percussion event opening flag position and timer are set, and initialize percussion event opening flag position and timing
Device；
Step S2, using 10ms data as basic processing unit, the gathered data of microphone is read；
Step S3, whether the gathered data that detection is read meets the variation characteristic of knocking, if satisfied, then entering step S4；
If not satisfied, then adding ' 0 ' at the end of data sequence, and enter step S5；
Step S4, the zero-crossing rate of gathered data is calculated, and judges whether gathered data is to tap letter according to calculated zero-crossing rate
Number, and if it is, add ' 1 ' at the end of data sequence；If it is not, then adding ' 0 ' at the end of data sequence；
Step S5, primary complete percussion event is intercepted out；
Step S6, according to the percussion event of interception, data sequence is parsed, and corresponding desired operation is searched for from map listing,
And execute the desired operation.
2. a kind of method tapping the operation of microphone array analogue-key according to claim 1, it is characterised in that：It is described
Step S3 is specially：
The a reference value D1 for meeting knocking variation characteristic is set；
By the gathered data of reading using the maximum value in every 1ms data as sampled point, amounts to and choose 10 sampled points, and calculate
Go out the difference between maxima and minima in this 10 sampled points；Meanwhile calculated difference and a reference value D1 being compared
Compared with, and if difference is more than a reference value D1, be judged to meeting the variation characteristic of knocking, and enter step S4；If poor
Value is less than or equal to a reference value D1, then is judged to being unsatisfactory for the variation characteristic of knocking, need to add at this time at the end of data sequence
Add ' 0 ', and enters step S5.
3. a kind of method tapping the operation of microphone array analogue-key according to claim 2, it is characterised in that：It is described
The value range of a reference value D1 is：0.5-0.8.
4. a kind of method tapping the operation of microphone array analogue-key according to claim 1, it is characterised in that：It is described
Step S4 is specially：
The fundamental frequency value D2 of knocking is set；
The maximum sampled value v of the gathered data and time t of maximum sampled value appearance is obtained, and centered on time t, turns left and obtains
It takes sampled value to be more than the minimal instant t_left of k*v, turns right and obtain the maximum moment t_right that sampled value is more than k*v, wherein k
The range of signal calculated for determining zero-crossing rate, and calculate and adopted within the scope of minimal instant t_left to maximum moment t_right
Collect the zero passage number z of data；Meanwhile calculating z/ (t_right-t_left) and obtaining frequency values, and by obtained frequency values and base
Frequency value D2 is compared, and if frequency values are more than fundamental frequency value D2, gathered data is determined as knocking, and in data sequence
The end addition ' 1 ' of row；If frequency values are less than or equal to fundamental frequency value D2, gathered data is determined as non-knocking, and
The end addition ' 0 ' of data sequence.
5. a kind of method tapping the operation of microphone array analogue-key according to claim 4, it is characterised in that：It is described
The value range of fundamental frequency value D2 is：25-50 times/ms.
6. a kind of method tapping the operation of microphone array analogue-key according to claim 4, it is characterised in that：It is described
The value range of k is：0.2~0.4.
7. a kind of method tapping the operation of microphone array analogue-key according to claim 1, it is characterised in that：It is described
Step S5 is specially：
The primary complete duration T 1 for tapping event is set；
When detecting first knocking, percussion event opening flag position is enabled to be equal to 1, and start to intercept percussion event, together
When, start timer and proceeds by timing；
Judge timer time whether be equal to setting duration T 1, and if it is, terminate to tap event interception,
Percussion event opening flag position and timer are initialized simultaneously, enters step S6 later；If it is not, then entering step S2.
8. a kind of method tapping the operation of microphone array analogue-key according to claim 7, it is characterised in that：It is described
The value range of duration T 1 is：4-5s.
9. a kind of method tapping the operation of microphone array analogue-key according to claim 1, it is characterised in that：It is described
Step S6 is specially：
It formulates the map listing of percussion event and desired operation and is preserved；Maximum time interval T2 is set；When having intercepted one
After secondary complete percussion event, start to parse data sequence, and primary complete percussion event is resolved to 2 digit d1 and d2,
It specifically includes：
The primary complete time interval tapped in event with the presence or absence of an adjacent knocking of detection is more than the maximum of setting
Time interval T2, if so, using the center time point between the two knockings as cut-point, for the previous period by cut-point
Accumulation number of taps is denoted as d1, and the accumulation number of taps of a period of time after cut-point is denoted as d2；If it is not, then will hit against in event
Accumulation number of taps be denoted as d1, d2 is denoted as 0；
After having parsed percussion event, corresponding desired operation is searched out from map listing according to the d1 and d2 that parse, and
Execute the desired operation；Meanwhile after having executed desired operation, clear data sequence.
10. a kind of method tapping the operation of microphone array analogue-key according to claim 9, it is characterised in that：Institute
The value range for stating maximum time interval T2 is：0.5-1s.
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| CN201810384937.1A CN108664232B (en) | 2018-04-26 | 2018-04-26 | Method for simulating key operation by knocking microphone array |
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|---|---|---|---|
| CN201810384937.1A CN108664232B (en) | 2018-04-26 | 2018-04-26 | Method for simulating key operation by knocking microphone array |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202795331U (en) * | 2012-09-24 | 2013-03-13 | 共青城赛龙通信技术有限责任公司 | Electronic device with sound control keying function |
| CN102981737A (en) * | 2012-10-30 | 2013-03-20 | 北京小米科技有限责任公司 | File operation method and device |
| US8441790B2 (en) * | 2009-08-17 | 2013-05-14 | Apple Inc. | Electronic device housing as acoustic input device |
| CN106534585A (en) * | 2016-12-19 | 2017-03-22 | 捷开通讯(深圳)有限公司 | User operation response system and method for mobile terminal |
| CN107094274A (en) * | 2017-06-28 | 2017-08-25 | 歌尔科技有限公司 | A kind of wireless headset operating method, device and wireless headset |
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| US8441790B2 (en) * | 2009-08-17 | 2013-05-14 | Apple Inc. | Electronic device housing as acoustic input device |
| CN202795331U (en) * | 2012-09-24 | 2013-03-13 | 共青城赛龙通信技术有限责任公司 | Electronic device with sound control keying function |
| CN102981737A (en) * | 2012-10-30 | 2013-03-20 | 北京小米科技有限责任公司 | File operation method and device |
| CN106534585A (en) * | 2016-12-19 | 2017-03-22 | 捷开通讯(深圳)有限公司 | User operation response system and method for mobile terminal |
| CN107094274A (en) * | 2017-06-28 | 2017-08-25 | 歌尔科技有限公司 | A kind of wireless headset operating method, device and wireless headset |
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| CN108664232B (en) | 2021-09-07 |
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