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Device and method for collecting multi-channel sound through microphone array

A microphone array, multi-channel technology, applied in frequency/direction characteristic devices, loudspeakers, microphones, etc., can solve problems such as inability to apply multi-channel sound acquisition, inability to flexibly adjust the width of sound images, and achieve flexible pickup distance. , the effect of adjusting pan width, flexible pan width

Active Publication Date: 2014-06-11
山东新港电子科技有限公司
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Problems solved by technology

[0003] In view of this, the present invention provides a device for collecting multi-channel sound by a microphone array and a method thereof, to solve the problem of multi-channel sound collection that cannot be applied to non-professional environments such as home entertainment equipment and the inability to flexibly adjust the sound image width and pick up The problem of distance

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  • Device and method for collecting multi-channel sound through microphone array
  • Device and method for collecting multi-channel sound through microphone array
  • Device and method for collecting multi-channel sound through microphone array

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] refer to figure 1 , figure 1 It is a schematic block diagram of a device for collecting multi-channel sound by a microphone array according to the first embodiment of the present invention. Such as figure 1 As shown, the device 10 for collecting multi-channel sound with a microphone array disclosed in this embodiment includes: a sound collection module 101 , an echo suppression module 102 and N channels 103 .

[0042] In this embodime...

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Abstract

The invention discloses a device and method for collecting multi-channel sound through a microphone array. The method for collecting the multi-channel sound through the microphone array comprises the steps that M input signals are collected and echo suppression processing is conducted on the M input signals; delay adjusting is conducted on the M input signals through nth-route delay adjusting modules so as to form M nth-route output signals; wave beam forming is conducted on the M nth-route output signals through nth-route self-adaptive wave beam forming modules so as to obtain nth-route signals; the nth-route signals are processed through nth-route processing modules to obtain nth-route channel signals. Through the mode, the device and method can be used for multi-channel sound collection in non-professional environment such as domestic entertainment equipment, and the acoustic image width and the picking-up distance can be flexibly adjusted.

Description

technical field [0001] The invention relates to the field of collecting multi-channel sound, in particular to a device and method for collecting multi-channel sound with a microphone array. Background technique [0002] The existing stereo sound pickup methods include XY system, size AB system, NOS system or ORTF system. The above sound pickup methods have one thing in common: they all use "pairing microphones", that is, two microphones with the same parameters are placed in a preset position. Set the interval and angle to pick up the sound of the scene. Among them, the microphones have different sensitivities to sounds from various directions, which becomes the basis for the sound level difference of stereo sound pickup. For example, the distance between the microphones controls the time difference of sound pickup. However, the above sound pickup methods are applied to professional recording, and the requirements for equipment and recording environment are very high. In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R5/04
CPCH04R1/40H04R3/00H04S3/00H04R3/005H04R1/406H04R2201/405H04R2430/23
Inventor 张德明李海婷
Owner 山东新港电子科技有限公司
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