Computer-implemented method for emulating a physical, open-office environment, UC application for carrying out the method, and communication for real-time communication and collaboration
US-12095836-B2 · Sep 17, 2024 · US
Speech signal enhancement using visual information
US9293151B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9293151-B2 |
| Application number | US-201114352016-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 17, 2011 |
| Priority date | Oct 17, 2011 |
| Publication date | Mar 22, 2016 |
| Grant date | Mar 22, 2016 |
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Abstract
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Visual information is used to alter or set an operating parameter of an audio signal processor, other than a beamformer. A digital camera captures visual information about a scene that includes a human speaker and/or a listener. The visual information is analyzed to ascertain information about acoustics of a room. A distance between the speaker and a microphone may be estimated, and this distance estimate may be used to adjust an overall gain of the system. Distances among, and locations of, the speaker, the listener, the microphone, a loudspeaker and/or a sound-reflecting surface may be estimated. These estimates may be used to estimate reverberations within the room and adjust aggressiveness of an anti-reverberation filter, based on an estimated ratio of direct to indirect (reverberated) sound energy expected to reach the microphone. In addition, orientation of the speaker or the listener, relative to the microphone or the loudspeaker, can also be estimated, and this estimate may be used to adjust frequency-dependent filter weights to compensate for uneven frequency propagation of acoustic signals from a mouth, or to a human ear, about a human head.
First claim
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What is claimed is: 1. A method, comprising: providing a microphone to detect speech uttered by a speaker and generate audio signals from the speech received by the microphone; coupling an audio signal processor to the microphone to receive the audio signals and process the received audio signals; providing a camera that can be at least partially orientated toward the microphone to generate a scene image; coupling an image analyzer to the camera to automatically analyze the…
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Frequently asked questions
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- What does patent US9293151B2 cover?
- Visual information is used to alter or set an operating parameter of an audio signal processor, other than a beamformer. A digital camera captures visual information about a scene that includes a human speaker and/or a listener. The visual information is analyzed to ascertain information about acoustics of a room. A distance between the speaker and a microphone may be estimated, and this distan…
- Who is the assignee on this patent?
- Herbig Tobias, Wolff Tobias, Buck Markus, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04M3/568. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).