Content reproduction device and method, and program

A content reproduction method comprising:

• collecting noise by a microphone in surroundings of a casing;
• extracting by a feature amount extractor 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;
• calculating by a distance calculator 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;
• determining by a determinator whether or not music is included in sounds collected by the microphone by determining a threshold value of the calculated distance;
• processing by a processor 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
• adding and outputting by an adder a signal of sounds collected by the microphone and a signal of sounds of reproduced content.

A non-transitory computer readable storage medium having stored thereon, a computer program having at least one code section executable by a computer, thereby causing the computer to perform the steps comprising:

• a plurality of feature amounts that are obtained from a waveform of a signal of sounds collected by a microphone as a feature amount vector;
• calculating 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;
• determining whether or not music is included in sounds collected by the microphone by determining a threshold value of the calculated distance;
• processing 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 that music is included in sounds collected by the microphone;
• and
• for adding and outputting a signal of sounds collected by the microphone and a signal of sounds of reproduced content.