GAPLESS SPLICING OF PITCH ALTERED WAVEFORMS

摘要

A time compression/expansion system for recorded programs provides time change on playback with pitch correction free of gaps or processing noise due to splicing and discard. A dual memory delay system operated to inversely vary delay is used to provide an interval during which to detect the start of the next program sample with matched signal amplitude and sign. During this interval pitch correction is a continuous extension of the current sample. The system can include individual processing of contiguous frequency bands.