Some improvements on the synchronized-overlap-add method of time scale modification for use in real-time speech compression and noise filtering
James L. Wayman, David L. Wilson · IEEE Transactions on Acoustics Speech and Signal Processing · 1988
The synchronized-overlap-add (SOLA) method of time-scale modification has proven to be a useful technique for speech compression, both alone and when cascaded with other methods. The authors present a modification of the method which, while costing approximately 3% in compression ratio, increases the computation speed of the method by 30% and results in much higher quality transmission. They also show how the method can be used as a correlation filter for removing white noise from speech.>