Electronic device directional audio-video capture

A video and audio technology, applied in the field of directional audio and video capture, can solve problems such as slow response

Inactive Publication Date: 2011-08-17
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes these algorithms relatively slow to react to instantaneous changes in the environment

Method used

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  • Electronic device directional audio-video capture
  • Electronic device directional audio-video capture
  • Electronic device directional audio-video capture

Examples

Experimental program
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Embodiment approach

[0049] According to various exemplary embodiments of the present invention, the audio-visual source tracking system 30 provides face tracking assisted directional audio capture for telephone conversations and video telephony conversations. The audio-visual source tracking system 30 improves upstream audio performance (or audio quality) for hands-free voice / video calls in noisy environments, which can be perceived by end users during mobile voice calls.

[0050] The audio-visual source tracking system 30 can provide video tracking of faces and control of the directional sensitivity of the microphone array for directional audio capture to improve the quality of voice and / or video calls in noisy environments. Examples of the invention may include advanced techniques for robust and efficient face detection and tracking. Such techniques and algorithms have been developed by several research groups, and they are currently being used in several applications (eg face recognition, face...

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Abstract

Disclosed herein is an apparatus. The apparatus includes a housing, electronic circuitry, and an audio-visual source tracking system. The electronic circuitry is in the housing. The audio-visual source tracking system includes a first video camera and an array of microphones. The first video camera and the array of microphones are attached to the housing. The audio-visual source tracking system is configured to receive video information from the first video camera. The audio-visual source tracking system is configured to capture audio information from the array of microphones at least partially in response to the video information. The audio-visual source tracking system might include a second video camera that is attached to the housing, wherein the first and second video cameras together estimate the beam orientation of the array of microphones.

Description

technical field [0001] The present invention relates to an electronic device, and more particularly to directional audio-video capture for an electronic device. Background technique [0002] Electronic devices with hands-free phones or hands-free applications are known in the art. During a hands-free voice call, any sound other than the user's voice can be considered background noise that should be attenuated (or eliminated) to improve the quality of the phone conversation. Noise can involve the environment, network and audio chain corresponding to the transmitted and received signals. Ambient noise (or interfering sounds / background noise) can easily interfere during a hands-free voice call and can sometimes overwhelm the user's voice (signal) level, making it very difficult to separate the two. This can lead to poor signal-to-noise ratio (SNR). [0003] There are several audio-only tracking techniques for voice communications in the art. By providing a conventional conf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00H04R27/00H04R29/00H04N7/14H04M1/03
CPCH04M1/6041H04M2250/52G10L21/0208H04N7/142G06T7/2033G06T2207/30201H04R3/005G06T2207/10021H04R29/005H04R27/00G06T7/246
Inventor M·蒂科M·S·阿马莱南K·奥茨坎M·K·韦维莱南
Owner NOKIA TECHNOLOGLES OY
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