Patent ID: 11902757
Assignee: TENCENT AMERICA LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The apparatus of claim 9, the program code further including, in the first stage:
computing code configured to cause the at least one processor to compute a first covariance matrix based on the microphone signal and the far-end reference signal;
processing code configured to cause the at least one processor to process the first covariance matrix through a first linear projection filter and encoding a result of the first linear projection filter to estimate first stage filters;
applying code configured to cause the at least one processor to apply the first stage filters to a time-frequency shifted microphone signal and far-end reference signal; and
outputting code configured to cause the at least one processor to output the echo suppressed signal and the echo signal.