发明名称 |
Digital signal processing device, a method and a delta-sigma modulator using the same method |
摘要 |
A signal processing device uses a DeltaSigma modulator having varying effective orders to ensure an S/N ratio by selecting a high order when a 1-bit music signal is output via the DeltaSigma modulator. The signal processing device prevents noise during switchover by shifting to a low order just before the DeltaSigma modulator is bypassed if this occurs. The present invention provides a digital signal processing device which can switch between an original sound signal and a DeltaSigma modulation signal and yield a sufficient S/N ratio for a reprocessed DeltaSigma modulation signal. If any 1-bit original sound signal is input, little switching noise is generated.
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申请公布号 |
US2005162887(A1) |
申请公布日期 |
2005.07.28 |
申请号 |
US20050084167 |
申请日期 |
2005.03.21 |
申请人 |
SONY CORPORATION |
发明人 |
TAGAMI SHIGEO |
分类号 |
H03M3/02;G06F7/60;H03M7/34;(IPC1-7):G11C17/00 |
主分类号 |
H03M3/02 |
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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