Sound source enumeration and direction of arrival estimation using a bayesian framework

A non-transitory computer readable storage device having stored thereon instructions for processing electrical signals corresponding to an acoustic signal, the electrical signals transmitted from a microphone array to input/output circuitry of a computing device, the computer readable storage device comprising:

• an enumeration module configured with instructions for estimating a number of sound sources associated with the acoustic signal, the estimating comprising selecting a specific parametric model from a generalized model, the generalized model related to a microphone array architecture used to capture the acoustic signal;
• and
• a direction of arrival (DoA) module configured with instructions for estimating a direction of arrival of each sound source of the number of sound sources based, at least in part, on the selected model,
• wherein the computing device includes processor circuitry for performing the instructions of the computer readable storage device for estimating the number of sound sources and estimating the DoA of each sound source, and
• wherein the instructions are based on a Bayesian framework.

A system for sound source enumeration and direction of arrival (DoA) estimation, the system comprising:

• a microphone array configured to capture an acoustic signal;
• a computing device comprising:
• an enumeration module configured with instructions to estimate a number of sound sources associated with the acoustic signal, the estimating comprising selecting a specific parametric model from a generalized model, the generalized model related to a microphone array architecture used to capture the acoustic signal;
• and
• a DoA module configured with instructions to estimate a direction of arrival of each sound source of the number of sound sources based, at least in part, on the selected model,
• wherein the estimating the number of sound sources and estimating the DoA of each sound source are performed using a Bayesian framework;
• memory circuitry configured to store data and/or configuration parameters associated with the enumeration module, the DoA module, and the microphone array;
• input/output circuitry configured to receive electrical signals from the microphone array;
• processor circuitry configured to perform operations of the enumeration module and the DoA module.