Patent ID: 11967327
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. The method of claim 1, wherein estimating the phase of each of the peaks comprises:
calculating a phase estimation for the peaks of the time reversed phase adjusted peaks in accordance with:

ϕi=∠{circumflex over (X)}mem(ki)−ffrac(ϕc+π)

ffrac=fi−ki 

where ϕi is an estimated phase at frequency fi, ∠{circumflex over (X)}mem(ki) is an angle of spectrum {circumflex over (X)}mem of a previously received audio signal at a frequency bin ki, ffrac is a rounding error, ϕc is a tuning constant, and ki is [fi], where [·] represents a rounding operation.