用于处理音频数据的方法和装置

• Format: Patent
• Language: Chinese
• Published: 29.12.2020
• Subjects: ACOUSTICS; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; MUSICAL INSTRUMENTS; PHYSICS; PUBLIC ADDRESS SYSTEMS; SPEECH ANALYSIS OR SYNTHESIS; SPEECH OR AUDIO CODING OR DECODING; SPEECH OR VOICE PROCESSING; SPEECH RECOGNITION; STEREOPHONIC SYSTEMS

一般来说，本发明描述用于压缩和解码音频数据的技术。用于压缩音频数据的实例装置包含一或多个处理器，所述一或多个处理器经配置以将去相关变换应用于环境立体混响系数，并且获得所述环境立体混响系数的经去相关表示。所述系数是从多个高阶立体混响系数提取并且表示由所述多个高阶立体混响系数描述的声场的背景分量，其中所述多个高阶立体混响系数中的至少一者与具有大于一的阶数的球形基底函数相关联。 In general, techniques are described for compression and decoding of audio data are generally disclosed. An example device for compressing audio data includes one or more processors configured to apply a decorrelation transform to ambient ambisonic coefficients to obtain a decorrelated representation of the ambient ambisonic coefficients, the ambient HOA coefficients having been extracted from a plurality of higher order ambisonic coefficients and representative of a background component of a soundfield described by the plurality of higher order ambisonic coefficients, wherein at least one of the plurality of higher order ambisonic coefficients is associated with a spherical basis function having an order greater than one.