PRODUCTS
|
 GritTec's Time
stretching technology
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 for win32 (C++ fixed point code) is available on request;
- Portability to any DSP, ARM or RISC platform.
For more information, please contact us via Online Request Form.
|
|
|
|
