CONTEXT-BASED AMBIENT SOUND ENHANCEMENT AND ACOUSTIC NOISE CANCELLATION

• Main Authors: TYRONE T CHEN, JOHN WOODRUFF, BASS EIENGER, ANDREW E GREENWOOD, JAKUB MAZUR, TONY S VERMA, VLADAN BAJIC, TOM-DAVY W SAUX
• Format: Patent
• Language: English; Japanese
• Published: 10.12.2020
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; PUBLIC ADDRESS SYSTEMS; SOUND-PRODUCING DEVICES

To provide a digital audio signal processing technique which automatically controls how ambient sound is reproduced by an against-the-ear audio device, such as headphones or mobile phones, according to a user's context of the device.SOLUTION: An audio system has an ambient sound enhancement function, in which an against-the-ear audio device having a speaker 2 converts a digitally processed version of an input audio signal into sound. The audio system also has an acoustic noise cancellation (ANC) function which can be combined in various ways with the sound enhancement function, and can be responsive to voice activity detection, and combines advantages of ANC with the ambient sound enhancement function to reduce a closure effect at low frequencies, and personalizes an ambient sound enhancement at high frequencies.SELECTED DRAWING: Figure 2 【課題】デバイスのユーザのコンテキストに従って、ヘッドホン又は携帯電話機などの、周囲音が耳対応聴力デバイスによりどのように再生されるかを自動的に制御するデジタルオーディオ信号処理技法を提供する。【解決手段】オーディオシステムは、スピーカ２を有する耳対応オーディオデバイスが、入力オーディオ信号のデジタル処理されたバージョンを音に変換する周囲音増強機能と、オーディオシステムはまた、様々な方法で音増強機能と組み合わせることができ、音声活動検出に応答し得る音響ノイズキャンセル（ＡＮＣ）機能と、を有し、ＡＮＣの利点を周囲音増強機能と組み合わせて、低周波数での閉塞効果を低減すると共に、高周波での周囲音増強を個人化する。【選択図】図２