Patent ID: 9589571
Date: 2017-03-07
CPC Classifications: G10L,H04R,H04S

Claim:
1. A method for encoding audio data, comprising: detecting for the audio data an audio data type out of at least three different types, the types comprising a first Higher-Order Ambisonics (HOA) format, a microphone recording with a given setup of a plurality of microphones and a multichannel audio stream mixed according to a specific panning; transforming coefficients of the audio data of a first HOA format based on an inverse Discrete Spherical Harmonics Transform (iDSHT) to coefficients of a second HOA format based on a determination that the audio data has the first HOA format; encoding the coefficients of the spatial domain of the second HOA format and auxiliary data that indicate at least metadata about virtual or real loudspeaker positions and mixing information about the audio data, the mixing information comprising details of at least one of details of the first HOA format, and the given setup of the plurality of microphones and details of said specific panning.