Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
May 22, 2012
Patent Application Number
11824161
Date Filed
June 28, 2007
Patent Citations Received
0
Patent Primary Examiner
Patent abstract
In a mobile terminal device having a processing unit and a memory unit, an acoustic echo cancellation and a microphone beamforming are provided. Said device includes a plurality of a microphones, a pre-processing stage has an amplifier and a signal converter for an analog-to-digital conversion. In a main signal processing stage, a pre-filter suitable for polynomial beamforming, an acoustic echo cancellation stage and a post-filter for polynomial beamforming are provided. Furthermore, a post-processing stage has an amplifier and a signal converter for a digital-to-analog conversion, and plurality of speakers.
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