发明名称 |
Signal processing system, signal processing apparatus and method, recording medium, and program |
摘要 |
The present invention relates to a signal processing system, a signal processing apparatus and method, a recording medium, and a program in which high frequency components of a narrow-range signal having suppressed high frequency components can be restored with high accuracy. A narrow-range audio signal having low frequency components is divided into frames by a frame-unit dividing unit 11, and is spectral-transformed into a signal on a frequency domain by a DCT transform unit 12. A learning-produced-data table 14 extracts, at an address corresponding to a class code supplied from a classifying unit 13, high-frequency-component DCT spectrum data. In a spectrum combining unit 16, the extracted high-frequency-component DCT spectrum data is combined with low-frequency-component DCT spectrum data output from the DCT transform unit 12. Subsequently, a broad-range audio signal having combined high frequency components and low frequency components is output. The present invention can be applied to cellular phones.
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申请公布号 |
US2005073986(A1) |
申请公布日期 |
2005.04.07 |
申请号 |
US20040495295 |
申请日期 |
2004.11.26 |
申请人 |
KONDO TETSUJIRO;HATTORI MASAAKI;WATANABE TSUTOMU;KIMURA HIROTO;YAMAMOTO SAKON;ARIMITSU AKIHIKO |
发明人 |
KONDO TETSUJIRO;HATTORI MASAAKI;WATANABE TSUTOMU;KIMURA HIROTO;YAMAMOTO SAKON;ARIMITSU AKIHIKO |
分类号 |
G10L21/04;G10L13/00;G10L19/00;G10L19/02;G10L21/02;H04N7/26;H04N7/28;H04N7/30;H04N7/46;H04N7/64;(IPC1-7):H04J1/00 |
主分类号 |
G10L21/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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