Data processing: speech signal processing – linguistics – language – Audio signal time compression or expansion
Reexamination Certificate
2002-02-12
2009-10-27
Smits, Talivaldis I (Department: 2626)
Data processing: speech signal processing, linguistics, language
Audio signal time compression or expansion
C704S200100, C704S501000, C704S504000
Reexamination Certificate
active
07610205
ABSTRACT:
In one alternative, an audio signal is analyzed using multiple psychoacoustic criteria to identify a region of the signal in which time scaling and/or pitch shifting processing would be inaudible or minimally audible, and the signal is time scaled and/or pitch shifted within that region. In another alternative, the signal is divided into auditory events, and the signal is time scaled and/or pitch shifted within an auditory event. In a further alternative, the signal is divided into auditory events, and the auditory events are analyzed using a psychoacoustic criterion to identify those auditory events in which the time scaling and/or pitch shifting procession of the signal would be inaudible or minimally audible. Further alternatives provide for multiple channels of audio.
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Dolby Laboratories Licensing Corporation
Gallagher Thomas A.
Godbold Douglas C
Smits Talivaldis I
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