It is heavy, being karaoke device null voice amplification expedient and the plural

摘要

PPROBLEM TO BE SOLVED: To provide comfortable and balanced chorus on a singing side and a listening side by automatically optimizing the balance of each voice part when a plurality of singers each having a microphone share and sing each singing part of a chorus music. PSOLUTION: Under performance of the chorus music, melody data of a main voice part in Karaoke data is individually contrasted with a singing voice signal from each microphone 21, and the microphone into which the singing voice of the main voice part is input is specified. The singing voice volume levels outputted from amplification systems 171 of a plurality of microphone outputs in a sound reinforcing means are compared with each other. Based on the output of this melody analysis and sound volume comparison, gain of each microphone output amplification system in the sound reinforcing means is adjusted individually. PCOPYRIGHT: (C)2011,JPO&INPIT