Data processing: speech signal processing – linguistics – language – Audio signal time compression or expansion
Reexamination Certificate
2002-06-11
2008-11-04
Hudspeth, David R. (Department: 2626)
Data processing: speech signal processing, linguistics, language
Audio signal time compression or expansion
C704S226000, C704S227000
Reexamination Certificate
active
07447640
ABSTRACT:
In an acoustic signal encoding apparatus (100), a tonal noise verification unit (110) verifies whether the input acoustic time-domain signals are tonal or noisy. If the input acoustic time-domain signals are tonal, tonal component signals are extracted by a tonal component extraction unit (121), and tonal component parameters are normalized and quantized in a normalization/quantization unit (122). The residual time-domain signals, obtained on extracting the tonal component signals from the acoustic time-domain signals, are transformed by an orthogonal transforming unit (131) into the spectral information, which spectral information is normalized and quantized by a normalization/quantization unit (132). A code string generating unit (140) generates a code string from the quantized tonal component parameters and the quantized residual component spectral information.
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Suzuki Shiro
Toyama Keisuke
Tsuji Minoru
Hudspeth David R.
Rider Justin W
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
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