Sound source signal filtering apparatus based on calculated distance between microphone and sound source
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United States of America Patent
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Nov 5, 2013
Grant Date -
May 23, 2013
app pub date -
Jan 22, 2013
filing date -
Dec 3, 2007
priority date (Note) -
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Abstract
Provided is a sound source signal filtering method and apparatus. The sound source signal filtering method includes: generating two or more microphone output signals by combining sound source signals input through a plurality of microphones; calculating distances between the microphones and a sound source from which the sound source signals are emitted by using distance relationships according to frequencies of the sound source signals extracted from the generated microphone output signals; and filtering the sound source signals to obtain one or more sound source signals corresponding to a predetermined distance by using the calculated distances. Accordingly, it is possible to obtain only sound source signals emitted from a sound source at a particular distance from the microphone array among a plurality of sound source signals input through the microphone array.
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