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GritTec's Pitch Shifting technology


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Datasheet
API Description
SDK under MS Windows x86/x64

Overview

GritTec's Pitch Shifting 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 shifting technology can be effectively used for changing initial music or voice into another music or voice (audio-speech effect - voice changer).

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.

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 pitch scale modification in audio files with changing the harmonics structure of signal. 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 pitch scale modification in audio files with changing the harmonics structure of signal. 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 pitch scale modification (changing the harmonics structure) of speech and audio signals. This program may be used for capturing of audio stream from Skype and its postprocessing with Pitch Shifting filter for changing pitch of initional voice. The program can mask outgoing audio stream and the incoming audio stream from the network.

Price: $35.0

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).
This program with GUI interface uses for capturing of audio stream from Skype VoIP program and its post processing with Pitch Shifting filter for changing pitch into initial voice in real-time mode. The program can mask outgoing audio stream and the incoming audio stream from the network. The program can be effectively used for audio animations, scoring of films with using one voice with a pre-configured variants of voice changes. The program can save into file (*.wav) initial audio stream and audio stream after GritTec's post processing.

Price: $30.0

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.