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GritTec's Time stretching technology


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Datasheet
API Description
 SDK under MS Windows x86/x64
SDK under ARM Cortex M3

Overview

GritTec's Time stretching technology is used for time scale modification (changing the speed or duration) of an audio signal without affecting its pitch.
Principle of functioning our algorithm is based on time-domain modification using SOLA technology, such as Waveform Synchronized Overlap-Add (WSOLA).

Applications
  • With audio players for changing the duration of music or speech;
  • With audio-video recorder devices or video post synchronization;
  • For voice messanging services (voice mail);
  • For reduce the rate of bit transmission (jitter control) in devices of IP telephony.

Features
  • High sound quality;
  • High robustness;
  • Guarantees fixed speaker position for stereo signals;
  • Time-stretch (time-scale) factor: 50%, ..., 200% (normal speed: 100%);
  • Dynamic mode changing of time stretch factor;
  • Input packet length: 20 ms, 30 ms or inside specific;
  • Dynamic mode changing of input packet length: 20 ms, 30 ms or inside specific;
  • Easy integration with target applications.

Signal requirement
  • Signal format: 16-bits linear;
  • 8 kHz, ..., 48 kHz sampling rate.

Availability
  • PC demo for MS Windows;
  • SDK with object code, ANSI C++ fixed point code is available on request;
  • Portability to any DSP or ARM platforms.

Online Shopping and Free Downloads
  • All products include a free evaluation period for your first installation only;
  • To continue using these programs after your evaluation period has expired, you can buy a end-user license;
  • Click 'Buy Now' under current product.

This program is a bash script for automatic time scale modification (changing the speed or duration) in audio files without changing its pitch. The program works in console mode and may be useful to the customer's Back-End server for automatic processing of audio files.

Price: $250.0

Linux x86 or x64.

Supported signal formats:
Windows PCM.
This program is a bash script for automatic time scale modification (changing the speed or duration) in audio files without changing its pitch. The program works in console mode and may be useful to the customer's Back-End server for automatic processing of audio files.

Price: $250.0

 MS Windows x86 or x64.

Supported signal formats:
Windows PCM, A/mu-Law Wave, Microsoft ADPCM (MS ADPCM), Intel ADPCM (IMA ADPCM), Microsoft ACM GSM 6.10 (ACM Waveform).
The program with GUI interface which is used for time scale modification (changing the speed or duration) of an speech and audio signals without affecting its pitch.

Price: $25.0

MS Windows x86/x64.

Supported signal formats:
Windows PCM, A/mu-Law Wave, Microsoft ADPCM (MS ADPCM), Intel ADPCM (IMA ADPCM), Microsoft ACM GSM 6.10 (ACM Waveform).


For more information, please contact us via Online Request Form.
If you are interested in our product, but you have not found your target platform, send us a request. We will be happy to assist you.