Masking sound outputting device and masking sound outputting method

摘要

A masking sound outputting device includes: an inputting unit which receives a picked-up sound signal relating to a picked-up sound; an extracting unit which extracts an acoustic feature amount of the picked-up sound signal; an instruction receiving unit which receives instructions for starting an output of a masking sound; and an outputting unit which, in the case where the instruction receiving unit receives the instructions for starting an output, outputs a masking sound corresponding to the acoustic feature amount extracted by the extracting unit.

主权项

1. A masking sound outputting device comprising:
a sound inputting device having an A/D converter that receives a picked-up sound signal corresponding to a picked-up sound; a sound outputting device having a D/A converter that outputs a masking sound; a memory storing a plurality of masking sounds and a correspondence table indicating correspondence relationships between an acoustic feature amount and the plurality of masking sounds; at least one processor configured to execute:
an extracting task that extracts an acoustic feature amount from the picked-up sound signal;an instruction receiving task that receives an instruction for starting an output of a masking sound; anda masking sound selecting task that, when the instruction receiving task receives the instruction for starting an output, selects a masking sound, among a plurality of masking sounds corresponding to the acoustic feature amount extracted by the extracting task, based on the correspondence table, and outputs the selected masking sound to the sound outputting device, wherein the masking sound selecting task randomly selects the masking sound, among the plurality of masking sounds corresponding in the correspondence table, to change the masking sound output to the sound outputting device.