Patent ID: 8804976

Claim:
A content reproduction device comprising: a microphone that collects noise in surroundings of a casing; a feature amount extractor that extracts a plurality of feature amounts that are obtained from a waveform of a signal of sounds collected by the microphone as a feature amount vector; a distance calculator that calculates an intervector distance between the extracted feature amount vector and a feature amount vector of same dimensions which is set in advance as a feature amount of a waveform of a music signal; a determinator that determines whether or not music is included in sounds collected by the microphone by determining a threshold value of the calculated distance; a processor that processes a signal of sounds collected by the microphone to change a volume or frequency characteristics of sounds collected by the microphone in a case when it is determined by the determinator that music is included in sounds collected by the microphone; and an adder that adds and outputs a signal of sounds collected by the microphone and a signal of sounds of reproduced content.