DIGITAL SIGNAL PROCESSING DEVICE AND DIGITAL SIGNAL PROCESSING METHOD

摘要

A digital signal processing device for outputting a 1-bit signal by using a DeltaSigma modulation device includes: a quantization device (33) for quantizing an integrated output of a sixth integrator (30), generating a 1-bit signal output while feeding it back to the input of each integrator via an adder (34), and outputting the signal outside the 6-dimensional DeltaSigma modulation device (3); and a control section (4) for generating a control signal for controlling the feedback signal from the quantization device (33) for varying the signal level of the signal component of the audio band of the 1-bit signal output. The control section (4) extracts an integrated output from a second integrator (14) which is an integrator at the input side of the 6-dimensional DeltaSigma modulation device (3).