PRODUCTS
|
 GritTec's Pitch Shift technology
Overview
GritTec's Pitch Shift technology is used for pitch scale modification
(changing the harmonics structure) of speech and audio signals.
Principle of functioning GritTec’s Pitch Shift technology is based
on time-domain modification using SOLA technology, such as Waveform
Synchronized Overlap-Add (WSOLA). Pitch shift technology can be
effectively used for changing initial music or voice into another
music or voice (audio-speech effect).
Applications
- With IVR systems such as text to speech (TTS) systems;
- With solutions of VoIP telephony such as audio chats;
- For voice messanging services (voice mail).
Features
- High sound quality;
- Real time processing;
- Signal delay: 0 ms.;
- Guarantees fixed speaker position for stereo signals;
- Pitch-stretch factor: 50%, ..., 200% (normal speed: 100%);
- Dynamic mode changing of pitch stretch factor;
- Length of input packet data: inside specific length OR you can set packet length in samples yourself, but not less then 20 ms and not more then 40 ms.;
- Dynamic mode changing of length of packet data;
- Easy integration with target applications.
Signal requirement
- Signal format: 16-bits linear;
- 8 kHz, ..., 48 kHz sampling rate;
- Channels: 2 (mono or stereo).
Availability
- PC demo for MS Windows;
- SDK for win32, win64 platforms with object code or ANSI C++ fixed point code is available on request;
- Customization resources if required;
- Portability to any DSP or ARM platforms.
For more information, please contact us via Online Request Form.
|
|
|
|
