To provide an acoustic system of which the sound quality is improved by adding an acoustic output device without changing the number of output channels.SOLUTION: An acoustic system 10 comprises: a generation unit 33 which generates a monaural signal [L(low)+R(low)] on the basis of a left stereo signal L(low) and a right stereo signal R(low) in a low frequency band; an extraction unit 34 which extracts a stereo component [L(high)-R(high)] for L channel and a stereo component [R(high)-L(high)] for R channel on the basis of a left stereo signal L(high) and a right stereo signal R(high) in a high frequency band; a first synthesis unit 35 which synthesizes the monaural signal [L(low)+R(low)] and the stereo component [L(high)-R(high)] for L channel; and a second synthesis unit 36 which synthesizes the monaural signal [L(low)+R(low)] and the stereo component [R(high)-L(high)] for R channel.SELECTED DRAWING: Figure 2
【課題】出力チャネル数を変更することなく音響出力装置を追加し、音質を向上させた音響装置を提供する。【解決手段】音響装置10は、低周波帯域の左ステレオ信号L(低)及び右ステレオ信号R(低)に基づいてモノラル信号{L(低)+R(低)}を生成する生成部33と、高周波数帯域の左ステレオ信号L(高)及び右ステレオ信号R(高)に基づき、Lチャネル用のステレオ成分{L(高)-R(高)}と、Rチャネル用のステレオ成分{R(高)-L(高)}とを抽出する抽出部34と、モノラル信号{L(低)+R(低)}と、Lチャネル用のステレオ成分{L(高)-R(高)}とを合成する第1合成部35と、モノラル信号{L(低)+R(低)}と、Rチャネル用のステレオ成分{R(高)-L(高)}とを合成する第2合成部36と、を備える。【選択図】図2
ACOUSTIC SYSTEM
音響装置
2022-06-21
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04S Stereophone Systeme , STEREOPHONIC SYSTEMS / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |
European Patent Office | 2018
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