 Digital Signal Processing Solutions Tools: Vocoder Algorithms | |
| Product Name: | Low Delay VQ Voice Coder |
| Company Name: | D2 Technologies, Inc. |
| Features & Benefits: |
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| TMS320 Devices Supported: | C2xx C5x C54x C6x |
| Data Rate (kbps): | 8kbps |
| Program Memory (k word): | 6kword |
| Data Memory (k word): | 300kword |
| Processor Loading (MIPS): | 15MIPS |
| Target Platform: | |
| Hardware Requirements: | None. |
| Technical Support/Training Available: | YES 90 day warranty period plus optional design consultation, algorithm development, system integration and training services available. |
| Overview: | D2's Low Delay Vector Quantization (LDVQ) voice coder algorithm module compresses either linear or codec voice data to 16 kbps at significantly lower complexity than the ITU standard G.728 coder. The quality of the LDVQ meets the "toll quality" requirements of speech applications. Designed to the VP Open interface, the LDVQ voice coder module easily integrates with other VP Open modules, runs in real-time concurrently with other VP Open modules, and handles any number of voice ports assigned to the DSP. Like all of D2's algorithm modules, LDVQ voice coder consists of robust software that is rigorously tested. |
| Ideal Performance: | Integrated with other VP Open modules and tested for concurrent real-time processing on multiple voice ports. |
| Algorithm Verification: | Validated through suite of tests: * Voice input tests with different telephone band voice samples and background noise conditions * Mean Opinion Score (MOS) test per ITU-T p. 80 Absolute Category Rating * Numerical stability tests with artificial signal such as tones and extreme values * Code error tests for stationary and non-stationary errors * VP Open interface validation |
| Availability: | C5x--Available; C2xx, C54x, C6x--Consult D2 |
| Operating System Used: | VP Open specifications |
| Tools Supported By: | TI, White Mountain, Go DSP, National Instruments |
| Company Information: | D2 Technologies, Inc. 104 West Anapamu Street Santa Barbara CA 93101 USA Tel: 805-564-3424 Fax: 805-966-2144 e-mail: sales@d2tech.com www:  http://www.d2tech.com |
| Voice processing solutions provider for computer telephony. Over 20 years of industry experience in algorithms, DSP implementation, real-time systems, telephony system integration. | |
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