Acoustic control apparatus

摘要

According to an embodiment, a control filter coefficient is calculated in such a manner that a second spatial average of one or more complex sound pressure ratios at one or more target binaural positions when a first loudspeaker and a second loudspeaker emit a second acoustic signal and a first acoustic signal is approximated to a first spatial average of one or more complex sound pressure ratios at the one or more target binaural positions when a target virtual acoustic source emits the first acoustic signal.

主权项

1. An acoustic control apparatus, comprising:
a control filter configured to multiply a first acoustic signal by a control filter coefficient to obtain a second acoustic signal; a first loudspeaker configured to emit the second acoustic signal; and a second loudspeaker configured to emit the first acoustic signal, wherein the control filter coefficient is calculated based on first head-related transfer function sets from the first loudspeaker and the second loudspeaker to target binaural positions and second head-related transfer function sets from a target virtual acoustic source to the target binaural positions in such a manner that a second spatial average of complex sound pressure ratios at the target binaural positions when the first loudspeaker and the second loudspeaker emit the second acoustic signal and the first acoustic signal is approximated to a first spatial average of complex sound pressure ratios at the target binaural positions if the target virtual acoustic source emitted the first acoustic signal, the target virtual acoustic source being different from the first loudspeaker and the second loudspeaker.