Acoustic Processing Unit Interface

An acoustic processing method, comprising:

• dividing a received audio signal into a plurality of frames using a processing unit;
• comparing a feature vector associated with a first frame of the plurality of frames to a Gaussian probability distribution vector using an acoustic processing unit (APU) to generate a score;
• and
• concurrently with the comparing, performing a search operation using a score corresponding to a feature vector associated with a second frame of the plurality of frames received from an acoustic processing unit (APU) using the processing unit, Wherein the second frame immediately precedes the first frame and wherein the processing unit and the APU are coupled over a data bus.

A computer readable medium having stored therein one or more sequences of one or more instructions for execution by one or more processors to perform an acoustic processing method, the method comprising:

• dividing a received audio signal into a plurality of frames using a processing unit;
• outputting a feature vector associated with a first frame of the plurality of frames to an acoustic processing unit, wherein the acoustic processing unit is configured to compare the first frame to a Gaussian probability distribution vector to generate a score;
• and
• concurrently with the comparison on the APU, performing a search operation using a score corresponding to a feature vector associated with a second frame of the plurality of frames received from an acoustic processing unit (APU) using the processing unit, wherein the second frame immediately precedes the first frame and wherein the processing unit and the APU are coupled over a data bus.