SOUND REPRODUCTION DEVICE

摘要

The sound reproduction device is applied to an acoustic space such as a passenger compartment, and controls the levels of the reproduced sounds at two evaluation points set at the seats in the passenger compartment, for example. Specifically, the sound reproduction device controls the phase of the one channel sound signal inputted from external and supplies it to the pair of speakers. The phase control is performed such that the sum of reproduced sound levels at the two evaluation points becomes larger than the sum of the reproduced sound levels at the two evaluation points in a case where the sound signal is reproduced by only one of the pair of speakers, in an entire audible band

主权项

1. A sound reproduction device comprising:
a pair of speakers arranged in front of and behind two evaluation points set in an acoustic space; an input unit which receives one-channel sound signal; and a phase control unit which controls a phase of the sound signal and supplies the sound signals to the pair of speakers, wherein the phase control unit controls a phase difference of the sound signals supplied to the pair of speakers such that a sum of reproduced sound levels at the two evaluation points becomes larger than the sum of the reproduced sound levels at the two evaluation points in a case where the sound signal is reproduced by only one of the pair of speakers, in an entire audible band.