| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically select a music piece which is easy to hear in environmental noise. <P>SOLUTION: A frequency analysis section 31 performs frequency analysis to a noise data T in environmental noise which is collected by a microphone 20, and frequency information S is obtained. An envelope analysis section 32 and a power analysis section 33 analyze an envelope and power based on the frequency information S, and calculates envelope information Pe and power information Pp. A noise determination section 34 classifies the environmental noise by referring to a noise parameter database 35 based on the envelope information Pe and the power information Pp, and creates noise information for indicating a classification result. A category selection section 36 selects a category of the music piece according to the classification of the environmental noise based on the noise information. For example, when the environmental nose is classified as " a vehicle", a category of "rock" is selected, and when the environmental noise is classified as " a tea room", a category of "classic" is selected. <P>COPYRIGHT: (C)2010,JPO&INPIT |
