CN205507069U - Sound positioner based on mike's array - Google Patents
Sound positioner based on mike's array Download PDFInfo
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- CN205507069U CN205507069U CN201620106853.8U CN201620106853U CN205507069U CN 205507069 U CN205507069 U CN 205507069U CN 201620106853 U CN201620106853 U CN 201620106853U CN 205507069 U CN205507069 U CN 205507069U
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Abstract
The utility model discloses a sound positioner based on mike's array, the device is including mike's array, array the control unit and voice recognition positioning unit. Mike's array includes a plurality of sharp arrays that are listed as central symmetry and have same central point, and sharp array includes a plurality of center aligns symmetry and the mike who arranges the in line. A plurality of connecting in parallel to mike then is connected with voice recognition positioning unit for gather acoustic information in pairs. Array the control unit is connected mike's one -to -one with every for control and whenever gather in pairs alone mike. Voice recognition positioning unit is used for analysis acoustic information, and relatively each acoustic information's signal intensity matches acoustic information with the frequency of sound source to the realization is fixed a position the sound source position. The utility model discloses a mike's array of unique design, the passing hand different a plurality of confirm the sound source direction to mike after, through matcing the sound source frequency with radial a plurality of to mike, realize the accurate positioning to the sound source.
Description
Technical field
The application relates to sound field of locating technology, is specifically related to a kind of sound based on microphone array
Sound positioner.
Background technology
The sound localization method being currently based on double microphone array has developed more ripe.Fig. 1 is existing
There is the collection location schematic diagram of a kind of sound positioner using double microphone array in technology.As
Shown in Fig. 1, microphone array is made up of two Mikes 3, and the acoustic information sending sound source 1 enters
Row gathers, and passes to the different phase and amplitude information of 2 Mikes 3 in fact by gathering sound source 1
The position of existing 0 to 180 degree localization of sound source 1.Tut localization method have method simple,
The advantage such as relatively low to the requirement of model/calculating resource, but also have simultaneously and can only position 0
To the scope of 180 degree, it is impossible to realize 360 degree of location, and the defect such as positioning precision is relatively low.
Being directed to drawbacks described above, generally using in prior art increases Mike's quantity or uses difference
The arrangement of shape improves the scope of location and improves the precision of location.
Fig. 2 is that in prior art, the collection of a kind of sound positioner using four microphone arrays is fixed
Position schematic diagram.As in figure 2 it is shown, microphone array is made up of the Mike 3 of four linear array, right
The acoustic information that sound source 1 sends is acquired.
Fig. 3 is the structure of a kind of sound positioner using annular microphone array in prior art
Schematic diagram.As it is shown on figure 3, what sound positioner included being made up of the Mike 3 of annular array
Microphone array, and the voice recognition positioning unit 5 being connected with each Mike 3 respectively.
It is narrower that sound positioner shown in Fig. 2 and Fig. 3 improves orientation range to a certain extent
The defect relatively low with precision, but simultaneously because needing to set up complicated voice recognition algorithm model, and
Resource requirement is higher and the higher defect of cost to cause calculating.
Utility model content
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide a kind of orientation range wider,
Precision is higher and algorithm is fixed compared with sound based on microphone array simple, that computational resource requirements is relatively low
Position device.
This utility model provides a kind of sound positioner based on microphone array, described device bag
Include microphone array, antenna array control unit and voice recognition positioning unit.
Described microphone array includes some row centrosymmetry and has the line array of same central point
Row, described linear array includes some to centrosymmetry and the Mike that is arranged in a straight line；If it is described
Do and be connected with described voice recognition positioning unit after Mike's parallel connection, for gathering sound letter in pairs
Breath.
Described antenna array control unit connects one to one with every couple of Mike, is used for controlling every couple of Mike
Gather the most in pairs.
Described voice recognition positioning unit is used for analyzing described acoustic information, relatively each acoustic information
Signal intensity, acoustic information is mated with the frequency of sound source, thus realize to sound source position
Put and position.
The sound positioner based on microphone array that the many embodiments of this utility model provide uses
The microphone array of unique design, different some true to Mike in, direction identical by central point
After determining the direction of sound source, further by the some frequencies that Mike is mated sound source with radial direction,
Thus realize sound source position is accurately positioned；
The sound positioner based on microphone array that some embodiments of this utility model provide passes through
Use circular array or the microphone array of ball array, further expand orientation range；
Some embodiments of this utility model provide sound positioner based on microphone array for
The acoustic information that the every couple of Mike is gathered only need to use simple ripe diamylose gram location algorithm, phase
To the method using complicated algorithm location, required calculating resource and cost are relatively low.
Accompanying drawing explanation
By reading retouching in detail with reference to made non-limiting example is made of the following drawings
Stating, other features, purpose and advantage will become more apparent upon:
Fig. 1 is that in prior art, the collection of a kind of sound positioner using double microphone array is fixed
Position schematic diagram.
Fig. 2 is that in prior art, the collection of a kind of sound positioner using four microphone arrays is fixed
Position schematic diagram.
Fig. 3 is the structure of a kind of sound positioner using annular microphone array in prior art
Schematic diagram.
The sound positioner based on microphone array that Fig. 4 provides for this utility model one embodiment
Middle microphone array structural representation.
The sound positioner based on microphone array that Fig. 5 provides for this utility model one embodiment
Middle Mike and voice recognition positioning unit and the annexation schematic diagram of control switch.
The sound positioner based on microphone array that Fig. 6 provides for this utility model one embodiment
The schematic diagram of middle spherical array.
The sound localization method based on microphone array that Fig. 7 provides for this utility model one embodiment
Flow chart.
Fig. 8 is the flow chart of step S30 in sound localization method shown in Fig. 7.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is appreciated that
, specific embodiment described herein is used only for explaining relevant utility model, rather than right
The restriction of this utility model.It also should be noted that, for the ease of describing, in accompanying drawing only
Show the part relevant to utility model.
It should be noted that in the case of not conflicting, the embodiment in the application and embodiment
In feature can be mutually combined.Describe this below with reference to the accompanying drawings and in conjunction with the embodiments in detail
Application.
The sound positioner based on microphone array that Fig. 4 provides for this utility model one embodiment
Middle microphone array structural representation.
As shown in Figure 4, in the present embodiment, what this utility model provided is based on microphone array
Sound positioner includes microphone array, antenna array control unit and voice recognition positioning unit 5.
Described microphone array includes some row centrosymmetry and has the line array of same central point
Row, described linear array includes some to centrosymmetry and the Mike 3 that is arranged in a straight line.Described
Some it is connected with voice recognition positioning unit 5 after Mike 3 parallel connection, for gathering sound in pairs
Information.
Described antenna array control unit connects one to one with every couple of Mike 3, is used for controlling every pair of wheat
Gram gather the most in pairs.
Voice recognition positioning unit 5 is used for analyzing described acoustic information, compares each acoustic information
Signal intensity, mates acoustic information with the frequency of sound source, thus realizes sound source position
Position.
Specifically, the microphone array shown in Fig. 4 include being arranged on conplane linear array A,
B, C, D, every string linear array includes 3 pairs of centrosymmetry and the Mike 3 being arranged in a straight line,
Such as linear array A includes (A11, A12), (A21, A22) and (A31, A32) three
To Mike 3, the distance between Mike 3 is arranged with the algorithm used according to the actual requirements.Phase
Adjacent linear array is uniformly distributed around central point at two dimensional surface, each other in 45° angle.
In more embodiments, the some linear arrays included by microphone array can be according to actual need
Ask and be arranged on same plane or Different Plane；Linear array can be arranged about according to the actual requirements
Central point is uniformly distributed to obtain the biggest collection orientation range, or is arranged to non-homogeneous point
The sound source in some orientation is acquired positioning by cloth with emphasis；Wheat included by each linear array
Gram 3 logarithms can be set to identical or different according to the actual requirements.
The sound positioner based on microphone array that Fig. 5 provides for this utility model one embodiment
Middle Mike and voice recognition positioning unit and the annexation schematic diagram of control switch.
As it is shown in figure 5, in a preferred embodiment, described antenna array control unit includes and every pair
Several control switches 7 several control switches 7 described with control that Mike connects one to one
Control module (being not shown).
Specifically, in the microphone array shown in Fig. 4, when described antenna array control unit controls one
When Mike (A11, A12) is gathered the most in pairs, with (A11, A12) correspondence even
The control switch SA1 connect closes, and remaining controls switch and opens, and (A11, A12) knows with sound
Other positioning unit 5 connects, and gathers acoustic information；When described antenna array control unit switching control
When (B11, B12) gathers the most in pairs, the control that connects corresponding with (B11, B12)
Switch SB1 Guan Bi, SA1 opens, and (B11, B12) is connected with voice recognition positioning unit 5,
Gathering acoustic information, the rest may be inferred.
In a preferred embodiment, described some row linear arrays are generally aligned in the same plane, rounded
Array.Specifically, the microphone array of circular array can obtain maximum the adopting in two dimensional surface direction
Collection orientation range.
The sound positioner based on microphone array that Fig. 6 provides for this utility model one embodiment
The schematic diagram of middle spherical array.
As shown in Figure 6, in a preferred embodiment, described some row linear arrays composition is multiple
Plane, in spherical array.Specifically, the microphone array of spherical array can obtain 3 D stereo
Maximum gather orientation range.
Above-described embodiment, by using circular array or the microphone array of ball array, expands further
Exhibition orientation range.
The sound localization method based on microphone array that Fig. 7 provides for this utility model one embodiment
Flow chart.
As it is shown in fig. 7, in the present embodiment, it is based on microphone array that this utility model provides
Sound localization method includes:
S10: a pair Mike passing sequentially through each column linear array gathers sound letter the most in pairs
Breath, and the acoustic information gathered is sent to described voice recognition positioning unit；
S30: compare the signal intensity of each acoustic information gathered, choose gathered acoustic information
The linear array at the strongest a pair Mike place of signal intensity；
S50: the every couple of Mike passing sequentially through selected linear array gathers same footpath the most in pairs
To acoustic information, and by gather acoustic information send to voice recognition positioning unit；
A S70: respectively each acoustic information of the same radial direction gathered and the frequency of sound source are carried out
Join, with the distance of localization of sound source Yu microphone array, thus the position of localization of sound source.
Specifically, as a example by the sound positioner shown in Fig. 4 and Fig. 5, in step slo,
Antenna array control unit control successively each linear array a pair Mike 3 (A11, A12), (B11,
B12), (C11, C12), (D11, D12) gather the most in pairs, collect respectively
One acoustic information, the second acoustic information, the 3rd acoustic information and falling tone message breath, and send
To voice recognition positioning unit 5.
Above-described embodiment is identical by central point, direction is different some determines sound source to Mike
Behind direction, further by the some frequencies that Mike is mated sound source with radial direction, thus realize
Sound source position is accurately positioned.
In step s 30, compare the signal intensity of each acoustic information gathered, if (C11,
The signal intensity of the 3rd acoustic information C12) gathered is the strongest, then choose linear array C.
In step s 50, antenna array control unit controls three couples of Mikes 3 of linear array C successively
(C11, C12), (C21, C22), (C31, C32) gather the most in pairs, respectively
Collect fifth sound message breath, the 6th acoustic information and the 7th acoustic information, and send to sound
Identify positioning unit 5.
In step S70, respectively by gathered fifth sound message breath, the 6th acoustic information and
7th acoustic information mates with the frequency of sound source, the difference such as such as male voice, female voice, child's voice
Sound source has different frequencies, with the distance of localization of sound source Yu microphone array, thus is accurately positioned
The position of sound source.
In a preferred embodiment, a pair Mike of described each column linear array and central point away from
From identical.
Specifically, in certain embodiments, step S10 also can be selected for such as (A31, A32),
The various combination such as (B21, B22), (C31, C32), (D11, D12), but use with in
Heart point apart from identical combination, such as (A21, A22), (B21, B22), (C21, C22),
(D21, D22), can obtain the most accurate comparative result.
Fig. 8 is the flow chart of step S30 in sound localization method shown in Fig. 7.
As shown in Figure 8, in a preferred embodiment, step S30 includes:
S31: analyzed each acoustic information gathered by diamylose gram location algorithm respectively and divided
Analysis result；
S33: relatively each described analysis result is to choose the strongest acoustic information of signal intensity and correspondence
Linear array.
Specifically, the diamylose gram location algorithm by relatively simple maturation compares the letter of acoustic information
Number intensity, can be without obtain accurate comparative result while expending bigger calculating resource.
To include that m row linear array, each column linear array include that the microphone array of Mike is by n
Example (m, n are the integer more than 1), the apparatus and method that this utility model provides only need to be carried out
Gather and analyze, accurate positioning result can be obtained, compare existing complicated algorithm for m+n time
Significantly save calculating resource, and corresponding cost.
Above-described embodiment only need to use simple maturation for the acoustic information that every couple of Mike is gathered
Diamylose gram location algorithm, the method relatively using complicated algorithm location, required calculating resource and
Cost is relatively low.
Above description is only the preferred embodiment of the application and saying institute's application technology principle
Bright.It will be appreciated by those skilled in the art that utility model scope involved in the application, and
It is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain not simultaneously
In the case of departing from the design of described utility model, above-mentioned technical characteristic or its equivalent feature carry out
Combination in any and other technical scheme of being formed.Such as features described above with disclosed herein (but
It being not limited to) technical characteristic with similar functions replaces mutually and the technical scheme that formed.
Claims (4)
1. a sound positioner based on microphone array, it is characterised in that described device bag
Include microphone array, antenna array control unit and voice recognition positioning unit；
Described microphone array includes some row centrosymmetry and has the line array of same central point
Row, described linear array includes some to centrosymmetry and the Mike that is arranged in a straight line；If it is described
Do and be connected with described voice recognition positioning unit after Mike's parallel connection, for gathering sound letter in pairs
Breath；
Described antenna array control unit connects one to one with every couple of Mike, is used for controlling every couple of Mike
Gather the most in pairs；
Described voice recognition positioning unit is used for analyzing described acoustic information, relatively each acoustic information
Signal intensity, acoustic information is mated with the frequency of sound source, thus realize to sound source position
Put and position.
Sound positioner the most according to claim 1, it is characterised in that described array
Control unit includes several control switches connected one to one with every couple of Mike and controls described
Several control the control module of switch.
Sound positioner the most according to claim 1, it is characterised in that described some
Row linear array is generally aligned in the same plane, rounded array.
Sound positioner the most according to claim 1, it is characterised in that described some
Row linear array forms multiple planes, in spherical array.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620106853.8U CN205507069U (en) | 2016-02-02 | 2016-02-02 | Sound positioner based on mike's array |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548998A (en) * | 2016-02-02 | 2016-05-04 | 北京地平线机器人技术研发有限公司 | Sound positioning device based on microphone array and method |
| CN107843333A (en) * | 2017-07-17 | 2018-03-27 | 北京大学 | A kind of pipeline radial direction glottis neoplasms detecting system and method based on compressive sensing theory |
| CN112540347A (en) * | 2020-11-17 | 2021-03-23 | 普联国际有限公司 | Method and device for judging distance of sound source, terminal equipment and storage medium |
-
2016
- 2016-02-02 CN CN201620106853.8U patent/CN205507069U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548998A (en) * | 2016-02-02 | 2016-05-04 | 北京地平线机器人技术研发有限公司 | Sound positioning device based on microphone array and method |
| CN105548998B (en) * | 2016-02-02 | 2018-03-30 | 北京地平线机器人技术研发有限公司 | Sound positioner and method based on microphone array |
| CN107843333A (en) * | 2017-07-17 | 2018-03-27 | 北京大学 | A kind of pipeline radial direction glottis neoplasms detecting system and method based on compressive sensing theory |
| CN107843333B (en) * | 2017-07-17 | 2019-06-07 | 北京大学 | A kind of pipeline radial direction glottis neoplasms detection system and method based on compressive sensing theory |
| CN112540347A (en) * | 2020-11-17 | 2021-03-23 | 普联国际有限公司 | Method and device for judging distance of sound source, terminal equipment and storage medium |
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