Patent ID: 9111580
Filing Date: 2015-08-18
Classification: G11B,H04N

Abstract:
1. A method for time-aligning a first media signal and a second media signal, the method comprising: receiving the first and second media signals as streams of digital samples generated using a sampling rate; determining an approximate misalignment between the first and second media signals; selecting a first coarse alignment function from a plurality of coarse alignment functions based on the approximate misalignment between the first and second media signals; determining a first coarse time shift using the first coarse alignment function; shifting the second media signal by the first coarse time shift to generate a first coarse-shifted second signal; selecting a second coarse alignment function from the plurality of coarse alignment functions; determining a second coarse time shift using the second coarse alignment function; shifting the first coarse-shifted second signal by the second coarse time shift to generate a second coarse-shifted second signal; determining an aligning time shift between the first media signal and the second coarse-shifted second signal; and shifting the second coarse-shifted second signal by the aligning time shift to generate a shifted second signal aligned with the first media signal.