Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion – With content reduction encoding
Reexamination Certificate
2007-02-27
2007-02-27
{hacek over (S)}mits, Talivaldis Ivars (Department: 2626)
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
With content reduction encoding
C704S200100, C704S500000, C341S050000
Reexamination Certificate
active
10333471
ABSTRACT:
A device and a method for compressing signal information by removing (thinning out) the signal component of a signal in a specific frequency band. Firstly, an input time-series signal (e.g., a PCM signal) is converted by an analyzer (11) into a spectrum signal. Next, of the bands obtained by dividing the spectrum equally into bands, the band having a predetermined or higher correlation in the spectrum distribution with the lower frequency band is specified as a harmonic band by a frequency band masking unit (12). Then, a removal band from which the spectrum is to be removed is determined from the harmonic band, and the spectrum signal of this removal band, from which the spectrum component has been removed (namely the frequency component has been thinned out), is fed to a synthesizer (13).
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International Search Report, PCT/JP01/05124, mailed Sep. 18, 2001.
Kabushiki Kaisha Kenwood
Rider Justin W.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
{hacek over (S)}mits Talivaldis Ivars
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