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Tachyon Sonics releases Tachyon Audio Time Stretch

Tachyon Sonics

Tachyon Sonics has released Tachyon Audio Time Stretch, a new stand-alone application that does only one thing: time stretching audio files.

Its main design goal is to achieve the highest possible quality rather than high performance. A fast CPU is required, and only off-line processing is possible. It is available for Windows (64-bit) and macOS (universal binary).

It is now for sale at the KVR Marketplace for $120.


  • Time stretches any music, track, speech or sound by any amount between 4 times slower and 4 times faster.
  • Professional-grade audio quality, based on state-of-the-art algorithms.
  • Supports mono, stereo and multi-channel (5.1, 7.1) audio files. Fully preserves the stereo / spatial field.
  • Loads and saves WAVE (*.wav), AIFF/AIFC (*.aiff, *.aifc) and AU Sun/NeXT (*.au) audio files, in PCM 16-bit / 24-bit integer, or in 32-bit IEEE floating point format. Also loads FLAC, OGG, MP3 and M4A files.
  • Supports sampling rates from 8 kHz to 384 kHz.
  • The time stretching factor can be specified in many ways: length change, speed change, length from/to, tempo from/to, video FPS from/to, etc.
  • Accurate to a single sample (with sub-sample accuracy internally).
  • Transforms multiple audio files simultaneously on multi-core computers.
  • Four quality settings (default 4 - highest quality) are available. Real-time processing speed on most computers with quality setting 1 (lowest).
  • Integrated mini player to preview the result before it is fully transformed.


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