发明名称 |
AUDIO REPRODUCING DEVICE AND METHOD,AUDIO AMPLIFIER,AND INTEGRATED CIRCUIT FOR AUDIO AMPLIFIER |
摘要 |
A digital &Dgr;Σ modulated signal produced by a quantitizer (1c) in a &Dgr;Σ modulation processing unit (1) is put into a feedback loop before inputted to a power switch (2) and converted into an analog signal by a D/A converter (1d). This analog signal is fed back to the input stage (a differentiator (1a) ) of the &Dgr;Σ processing unit (1) to prevent the switching distortion of the power switch (2) itself from being introduced into the feedback loop thereby to suppress the influence of the switching distortion.
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申请公布号 |
WO03005570(A1) |
申请公布日期 |
2003.01.16 |
申请号 |
WO2001JP05754 |
申请日期 |
2001.07.03 |
申请人 |
NIIGATA SEIMITSU CO., LTD.;KITAMURA, MAMORU |
发明人 |
KITAMURA, MAMORU |
分类号 |
H03F1/32;H03F3/217;H03M3/00;H03M3/02;(IPC1-7):H03F3/217;H04B14/06 |
主分类号 |
H03F1/32 |
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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