QUANTIZATION STEP SIZES FOR COMPRESSION OF SPATIAL COMPONENTS OF A SOUND FIELD

• Main Authors: RYU SANG UK, SEN DIPANJAN
• Format: Patent
• Language: English; Korean
• Published: 15.02.2016
• Subjects: ACOUSTICS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MUSICAL INSTRUMENTS; PHYSICS; SPEECH ANALYSIS OR SYNTHESIS; SPEECH OR AUDIO CODING OR DECODING; SPEECH OR VOICE PROCESSING; SPEECH RECOGNITION; STEREOPHONIC SYSTEMS

일반적으로, 음장의 공간 성분들의 압축을 위한 양자화 스텝 사이즈들을 결정하기 위한 기술들이 설명된다. 하나 이상의 프로세서들을 포함하는 디바이스는 그 기술들을 수행하도록 구성될 수도 있다. 즉, 하나 이상의 프로세서들은 음장의 공간 성분을 압축할 경우에 사용될 양자화 스텝 사이즈를 결정하도록 구성될 수도 있으며, 여기서, 공간 성분은 복수의 구면 조화 계수들에 대하여 벡터 기반 합성을 수행함으로써 생성된다. In general, techniques are described for performing a vector-based synthesis with respect to higher order ambisonic coefficients (or, in other words, spherical harmonic coefficients). A device comprising a processor may be configured to perform the techniques. The processor may perform the vector-based synthesis with respect to spherical harmonic coefficients to generate decomposed representations of the plurality of spherical harmonic coefficients and determine distinct and background directional information from the directional information. The processor may then reduce an order of the directional information associated with the background audio objects to generate transformed background directional information, and apply compensation to increase values of the transformed directional information to preserve an overall energy of the sound field.