A method is provided. The method includes receiving a first signal and a second signal, generating a first sequence based on the first signal by embedding at least one feature in the first signal, generating a second sequence based on the second signal by embedding at least one feature in the second signal, determining a minimum cost path of aligning the first sequence with the second sequence based on the embedded at least one feature in the first sequence and the embedded at least one feature in the second sequence, and aligning the first sequence with second sequence based on the determined minimum cost path.