Extracting decomposed representations of a sound field based on a second configuration mode

A method comprising:

• obtaining, by a device, a non-zero set of coefficients of a vector representative of a distinct component of a sound field, the vector having been decomposed from a plurality of spherical harmonic coefficients that describe the sound field;
• obtaining, by a device, one of a plurality of configuration modes by which to extract the non-zero set of coefficients of the vector in accordance with the one of the plurality of configuration modes, wherein the one of the plurality of configuration modes indicates that the non-zero set of the coefficients include those of the coefficients corresponding to an order greater than an order of a basis function to which one or more of the plurality of spherical harmonic coefficients correspond and exclude at least one of the coefficients corresponding to an order greater than the order of the basis function to which the one or more of the plurality of spherical harmonic coefficients correspond;
• and
• extracting, by the device, the non-zero set of the coefficients of the vector based on the obtained one of the plurality of configuration modes.

A device comprising:

• means for obtaining a non-zero set of coefficients of a vector representative of a distinct component of a sound field, the vector having been decomposed from a plurality of spherical harmonic coefficients that describe the sound field;
• means for storing the non-zero set of coefficients;
• means for obtaining one of a plurality of configuration modes by which to extract the non-zero set of coefficients of the vector in accordance with the one of the plurality of configuration modes, wherein the one of the plurality of configuration modes indicates that the non-zero set of the coefficients include those of the coefficients corresponding to an order greater than an order of a basis function to which one or more of the plurality of spherical harmonic coefficients correspond and exclude at least one of the coefficients corresponding to an order greater than the order of the basis function to which the one or more of the plurality of spherical harmonic coefficients correspond;
• and
• means for extracting the non-zero set of the coefficients of the vector based on the obtained one of the plurality of configuration modes.

A non-transitory computer-readable storage medium having stored thereon instructions that, when executed, cause one or more processors to:

• determine a non-zero set of coefficients of a vector that representative of a distinct component of a sound field, the vector having been decomposed from a plurality of spherical harmonic coefficients that describe the sound field;
• obtain one of a plurality of configuration modes by which to extract the non-zero set of coefficients of the vector in accordance with the one of the plurality of configuration modes, wherein the one of the plurality of configuration modes indicates that the non-zero set of the coefficients include those of the coefficients corresponding to an order greater than an order of a basis function to which one or more of the plurality of spherical harmonic coefficients correspond and exclude at least one of the coefficients corresponding to an order greater than the order of the basis function to which the one or more of the plurality of spherical harmonic coefficients correspond;
• and
• extract the non-zero set of the coefficients of the vector based on the obtained one of the plurality of configuration modes.