Audio time scale modification using decimation-based...

Details Audio time scale modification using decimation-based... Audio time scale modification using decimation-based...

2011-06-07

2011-06-07

Yen, Eric (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S267000

Reexamination Certificate

active

07957960

ABSTRACT:
A high-quality, low-complexity audio time scale modification (TSM) algorithm useful in speeding up or slowing down the playback of an encoded audio signal without changing the pitch or timbre of the audio signal. The TSM algorithm uses a modified synchronized overlap-add (SOLA) algorithm that maintains a roughly constant computational complexity regardless of the TSM speed factor and that performs most of the required SOLA computation using decimated signals, thereby reducing computational complexity by approximately two orders of magnitude.

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