Digital Signal Processing Solutions Tools: Telecommunication Algorithms

Product Name: Time Scaling
Company Name: D2 Technologies, Inc.
Features & Benefits:
  • Speeds up voice by 2:1, 3:2 and 4:3
  • Slows down voice by 1:2, 2:3 and 3:4
  • Speed-up, slow-down changeable on the fly
  • Accepts telephone band codec or linear data
TMS320 Devices Supported: C2xx C5x C54x C6x
Data Rate (kbps): 8
Program Memory (k word): 0.6
Data Memory (k word): 525
Processor Loading (MIPS): 2.1
Target Platform:
Hardware Requirements: None.
Word Size:
Clock Rate:
Group Delays:
Technical Support/Training Available: YES
90 day warranty period plus optional design consultation, algorithm development, system integration and training services available.
Overview: D2's Time Scaling algorithm module modifies the speaking rate of a voice recording without affecting the intelligibility or speaker quality of the voice. Speed-up lets the listener scan through the recording quickly without missing any important information. Slow-down allows the user to slow the recording to interpret unintelligible information and to aid in recording transcription.
Ideal Performance: Integrated with other VP Open modules and tested for concurrent real-time processing on multiple voice ports.
Algorithm Verification: D2 time scaling unit test with male and female speech samples at different speaking rates that are processed and licensed to for voice quality and intelligibility, VP Open interface validation.
Availability: C5x, C54x - Available, C6x - Consult D2
Operating System Used: VP Open specifications
Tools Supported By: TI, White Mountain, DSP Research, 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, and telephony system integration.

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