Digital Signal Processing Solutions Tools: Vocoder Algorithms

Product Name: Ensigma HCELP
Company Name: Ensigma Ltd.
Features & Benefits:
    VW of LSFs on 4.8kbps version Phonetic segmentation High quality CELP speech coding 4.8- and 5.3kbps Non-integer pitch adaptive codebook Hybrid excitation codebooks Source code available
TMS320 Devices Supported: C3x C4x
Data Rate (kbps): 4.8 or 5.3Kbps
Program Memory (k word): 8 or 48kword
Data Memory (k word): 8kword
Processor Loading (MIPS): Max:95%
Target Platform: 40MHz TMS320C3x, C4x
Hardware Requirements:
Technical Support/Training Available: Yes
One week free expert support.
Overview: The technique of Code Excited Linear Predictive (CELP) coding has become the preferred technique for speech coding at low to medium bit rates (4.0- to 8.0kbit/s). Ensigma has considerable background in the various CELP techniques and offers a wide rang of algorithms to cover many system applications. For applications which require high quality speech coding Ensigma have developed a range of high quality CELP (HCELP) coders. These coders are available at bit rates of 4.8- and 5.3kbit/s. They offer state of the art coding on processors such as the TMS320C3x and TMS320C4x.
Ideal Performance:
Algorithm Verification:
Availability: Now.
Operating System Used:
Tools Supported By:
Company Information: Ensigma Ltd.
Turing House, Station Rd.
Chepstow Wales NP6 5PB UK
Tel: +44 1291 625422
Fax: +44 1291 620301
e-mail: cliff@ensigma.com
www: http://www.ensigma.com
Ensigma provides design and research services in the fields of telecommunications, speech and signal processing. We also have DSP implementations of many international standard algorithms.

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