Signal processing apparatus, signal processing method, and recording medium

A signal processing method that generates an output signal from an input signal, the signal processing method comprising:

• dividing the input signal into a plurality of input signal blocks, each having a predetermined data length;
• distributing, in dividing order, the plurality of divided input signal blocks to a plurality of delta-sigma modulation circuits that perform delta-sigma modulation on the plurality of input signal blocks and that output a plurality of output signal blocks;
• and
• coupling the plurality of output signal blocks outputted, thereby to generate an output signal, wherein
• the signal processing method generates the output signal such that
• a first output signal block included in the output signal
• reflects
• a result obtained from a first delta-sigma modulation circuit, which performs delta-sigma modulation on a first input signal block corresponding to the first output signal block, performing delta-sigma modulation on the first input signal block, and a state of a second delta-sigma modulation circuit that performs delta-sigma modulation on a second input signal block located immediately before or after the first input signal block.

A non-transitory recording medium recording thereon a computer program that allows a computer to execute a signal processing method that generates an output signal from an input signal, the signal processing method including:

• dividing the input signal into a plurality of input signal blocks, each having a predetermined data length;
• distributing, in dividing order, the plurality of divided input signal blocks to a plurality of delta-sigma modulation circuits that perform delta-sigma modulation on the plurality of input signal blocks and that output a plurality of output signal blocks;
• and
• coupling the plurality of output signal blocks outputted, thereby to generate an output signal, wherein
• the signal processing method generates the output signal such that
• a first output signal block included in the output signal
• reflects
• a result obtained from a first delta-sigma modulation circuit, which performs delta-sigma modulation on a first input signal block corresponding to the first output signal block, performing delta-sigma modulation on the first input signal block, and a state of a second delta-sigma modulation circuit that performs delta-sigma modulation on a second input signal block located immediately before or after the first input signal block.