Estimation of acoustic parameters for audio system based on stored information about acoustic model

An apparatus comprising:

• a processor configured to:
• estimate a plurality of modal parameters for a set of discrete locations within a local area using a set of room impulse responses for the set of discrete locations, wherein the local area includes an audio system, and
• generate a plurality of acoustic model parameters by fitting the plurality of modal parameters to an acoustic model that accounts for a physical geometry of the local area;
• and
• a non-transitory computer-readable storage medium configured to store the plurality of acoustic model parameters and an indication about the acoustic model, wherein
• audio content is presented by a sound filter of the audio system using the plurality of acoustic model parameters and the indication about the acoustic model,
• the plurality of modal parameters comprises a respective amplitude, a frequency and a decay factor for each discrete location in the set of discrete locations for a corresponding acoustic mode, and
• the respective amplitude is a function of each discrete location in the set of discrete locations, the frequency is same for all discrete locations in the set of discrete locations, and the decay factor is same for all discrete locations in the set of discrete locations.

A non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by a processor, cause the processor to:

• estimate a plurality of modal parameters for a set of discrete locations within a local area using a set of room impulse responses for the set of discrete locations, wherein the local area includes an audio system;
• generate a plurality of acoustic model parameters by fitting the plurality of modal parameters to an acoustic model that accounts for a physical geometry of the local area;
• and
• store, at the non-transitory computer-readable storage medium, the plurality of acoustic model parameters and an indication about the acoustic model, wherein
• audio content is presented by the audio system using the plurality of acoustic model parameters and the indication about the acoustic model,
• the plurality of modal parameters comprises a respective amplitude, a frequency and a decay factor for each discrete location in the set of discrete locations for a corresponding acoustic mode, and
• the respective amplitude is a function of each discrete location in the set of discrete locations, the frequency is same for all discrete locations in the set of discrete locations, and the decay factor is same for all discrete locations in the set of discrete locations.