The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2011
Filed:
Jan. 16, 2007
Zicheng Liu, Bellevue, WA (US);
Zhengyou Zhang, Bellevue, WA (US);
Li-wei He, Redmond, WA (US);
Philip A. Chou, Redmond, WA (US);
Minghua Chen, Redmond, WA (US);
Zicheng Liu, Bellevue, WA (US);
Zhengyou Zhang, Bellevue, WA (US);
Li-wei He, Redmond, WA (US);
Philip A. Chou, Redmond, WA (US);
Minghua Chen, Redmond, WA (US);
Microsoft Corp., Redmond, WA (US);
Abstract
An energy based technique to estimate the positions of people speaking from an ad hoc network of microphones. The present technique does not require accurate synchronization of the microphones. In addition, a technique to normalize the gains of the microphones based on people's speech is presented, which allows aggregation of various audio channels from the ad hoc microphone network into a single stream for audio conferencing. The technique is invariant of the speaker's volumes thus making the system easy to deploy in practice.