To remove a surrounding sound to obtain a target sound even when the surrounding sound contains an uncorrelated noise.SOLUTION: In a sound processing system, a sound processing device 21 comprises: a first microphone that outputs a first signal based on a first sound signal; one or more microphones each of which outputs a microphone signal based on a sound signal; one or more adaptive filters F1 each of which receives the microphone signal from the one or more microphones and outputs a passage signal based on the microphone signal; a noise detection unit 30 that determines whether or not the microphone signal contains an uncorrelated noise; a control unit 28 that controls a filter coefficient of the one or more adaptive filters; and an addition unit 27 that subtracts from the first signal a subtraction signal based on the passage signal. The one or more microphones include a second microphone that outputs a second signal. When a determination unit determines that the second signal contains an uncorrelated noise, the control unit sets a level of the second signal inputted to each adaptive filter to zero.SELECTED DRAWING: Figure 2

    【課題】周辺の音声が無相関ノイズを含む場合でも、周辺の音声を除去して目的の音声を得られる。【解決手段】音声処理システムにおいて、音声処理装置21は、第1音声信号に基づいた第1信号を出力する第1マイクと、それぞれが、音声信号に基づいたマイク信号を出力する、1つ以上のマイクと、1つ以上のマイクから、それぞれのマイク信号が入力され、マイク信号に基づいた通過信号をそれぞれ出力する、1つ以上の適応フィルタF1と、マイク信号が無相関ノイズを含むかを判断するノイズ検知部30と、1つ以上の適応フィルタのフィルタ係数を制御する制御部28と、第1信号から、通過信号に基づいた減算信号を減算する加算部27と、を備える。1つ以上のマイクは、第2信号を出力する第2マイクを含む。判断部が、第2信号が無相関ノイズを含むと判断した場合、制御部は、適応フィルタに入力される第2信号のレベルをゼロにする。【選択図】図2


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    Title :

    SOUND PROCESSING SYSTEM AND SOUND PROCESSING DEVICE


    Additional title:

    音声処理システム及び音声処理装置


    Contributors:

    Publication date :

    2021-04-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10L Analyse oder Synthese von Sprache , SPEECH ANALYSIS OR SYNTHESIS



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