To provide a sound processing device capable of improving sound image localization accuracy for artificial engine sound.SOLUTION: A sound processing device for processing a sound signal which is based on an engine rotation speed of an engine of a vehicle, includes: a signal acquisition unit for acquiring a first sound signal having a plurality of frequency components having a frequency equal to or less than a first threshold value, and a second sound signal having a plurality of frequency components having a frequency higher than the first threshold value; a phase control unit for generating a plurality of third sound signals by dividing the first sound signal into a plurality of sound signals and phase-controlling respective ones of the plurality of first sound signals with a prescribed phase control quantity; a delay unit for generating a plurality of fourth sound signals by dividing the second sound signal into a plurality of second sound signals and delaying respective ones of the plurality of second sound signals with a prescribed amount of delay; and a mixing unit for generating a plurality of fifth sound signals by mixing the plurality of third sound signals and the plurality of fourth sound signals.SELECTED DRAWING: Figure 1
【課題】疑似エンジン音の音像定位精度を向上できる音響処理装置を提供する。【解決手段】車両のエンジン回転数に基づく音響信号を処理する音響処理装置であって、第1の閾値以下の周波数を有する複数の周波数成分を有する第1の音響信号と、第1の閾値よりも高い周波数を有する複数の周波数成分を有する第2の音響信号と、を取得する信号取得部と、第1の音響信号を複数に分割し、複数の第1の音響信号のそれぞれに対して所定の位相制御量で位相制御して、複数の第3の音響信号を生成する位相制御部と、第2の音響信号を複数に分割し、複数の第2の音響信号のそれぞれに対して所定の遅延量で遅延させて、複数の第4の音響信号を生成する遅延部と、複数の第3の音響信号と複数の第4の音響信号とを混合して、複数の第5の音響信号を生成する混合部と、を備える。【選択図】図1
SOUND PROCESSING DEVICE, SOUND PROCESSING METHOD AND PROGRAM
音響処理装置、音響処理方法、及びプログラム
2020-10-08
Patent
Elektronische Ressource
Japanisch
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
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