Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate
2011-02-01
2011-02-01
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Stereo speaker arrangement
C381S017000, C381S098000, C381S058000, C381S056000
Reexamination Certificate
active
07881485
ABSTRACT:
The apparatus for determining an impulse response in an environment in which a speaker and a microphone are placed works using an audio signal. Means for spectrally coloring a test signal, which preferably is a pseudonoise signal, works using a psychoacoustic masking threshold of the audio signal to obtain a colored test signal, which is embedded in the audio signal to obtain a measuring signal, which can be fed to the speaker. Means for determining the impulse response preferably performs a cross-correlation of a reaction signal received via the microphone from the environment and the test signal or the colored test signal. With this, an impulse response of an environment may also be determined during the presentation of an audio piece to provide an optimal description of environment for a wave-field synthesis.
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Neubauer Christian
Sporer Thomas
Chin Vivian
Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung
Glenn Michael A.
Glenn Patent Group
Monikang George
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