| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital signal processor which performs a batch processing such as mix and gain control at once though frequency characteristics of distinct filters are mixed to a plurality of input signals in the case of re-quantization only at once. SOLUTION: The digital signal processor 10 has a LPF function, a mixer function and an attenuator function inside a re-ΔΣmodulator 11, easily mixes inputs with different frequency characteristics and easily controls gains even when the frequency characteristics of the filters are distinct and mixed to a plurality of inputs. Thus, the re-ΔΣmodulator 11 generates re-quantization noise only at once since it performs the LPF function, the mixer function and the attenuator function in the case of re-quantization only at once. COPYRIGHT: (C)2006,JPO&NCIPI
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