Sound image integration positioning long distance voice acquisition device

A voice collection and joint positioning technology, applied in voice analysis, instruments, etc., can solve problems such as the need for mechanical rotating devices and the difficulty in determining the target speaker

Pending Publication Date: 2017-06-23
宁波桑德纳电子科技有限公司
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Problems solved by technology

[0010] Aiming at the difficulty of voice collection under long-distance and noisy backgrounds, combined with video cameras and microphone arrays, the audio-visual joint determination of the target speaker is carried out, thereby solving the difficulty of determining the target speaker and the need for mechanical Rotating device and other pro

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  • Sound image integration positioning long distance voice acquisition device
  • Sound image integration positioning long distance voice acquisition device
  • Sound image integration positioning long distance voice acquisition device

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Embodiment Construction

[0038] In order to make the technical content, features and advantages of the present invention more obvious and understandable, the following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0039] In the embodiment of the array type long-distance voice acquisition device for joint positioning of sound and image, the microphone array consists of 5 microphones (m0, m1,..., m4) arranged at equal intervals to form a microphone linear array, and each microphone in the array is installed figure 2 As shown in the reflector, the reflecting surface of the reflector is at 45 degrees to the central axis. The material of the reflector is stainless steel to adapt to the outdoor installation of the device of the present invention. In this embodiment, in order to focus on long-distance speech, the diameter of the emission cover is set. 0 = 40cm. The voice signal obtained by the microphone array uses the beam scanning algorithm to perfor...

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Abstract

For solving difficulty in acquiring voice under the long distance noise background, a video camera and a microphone array are integrated to determine a target speaker in a sound image integration mode, and problems of difficulty in determining the target speaker and requirement of a mechanic rotating device caused by simply employing a camera, a high directivity microphone or a microphone array in the prior art are solved. The voice acquisition device integrated with the monitoring camera and the microphone array wave beam shaping technology is advantaged in that target speaker positioning is carried out through sound and image integration, and outdoor long distance voice acquisition performance is enhanced on the condition that a noise environment is improved.

Description

Technical field [0001] The invention relates to a voice collection device, in particular to a long-distance voice collection device for joint audio and image positioning. Background technique [0002] In the fields of security, security, etc., various video surveillance systems have been widely used. Relying on various video surveillance systems, it is possible to confirm and screen relevant personnel in remote videos. When using the video surveillance system to confirm and identify remote suspects, if the language and dialogue information can be used through remote voice collection, it will greatly affect work efficiency. However, it is still extremely difficult to carry out long-distance voice collection under actual environmental background noise conditions. [0003] Due to the presence of environmental noise, the high directivity of the collection device must be used to ensure the quality of the collected long-distance voice during long-distance voice collection. Current lon...

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Application Information

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IPC IPC(8): G10L21/0216
CPCG10L21/0216G10L2021/02166
Inventor 朱沄杰徐伟明何颋黄松岳
Owner 宁波桑德纳电子科技有限公司
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