SOUND SIGNAL PROCESSING DEVICE, SOUND SIGNAL PROCESSING METHOD, PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To excellently synthesize a synthetic sound signal having desired directivity through the use of input sound signals of multiple microphones even in a microphone arrangement that causes a difference in the input characteristics of the microphones due to the influence of a housing, etc.SOLUTION: A sound signal processing device includes: a frequency conversion unit for generating multiple input sound spectra by performing frequency conversion on each of input sound signals that have been input from multiple microphones arranged in a housing; a first input selection unit for selecting an input sound spectrum corresponding to a first synthesis direction among the input sound spectra on the basis of the microphone arrangement with respect to the housing; and a first synthesis unit for generating a synthetic sound spectrum having directivity of a first synthesis direction by calculating the power spectrum of the input sound spectrum selected by the first input selection unit.