Digital Signal Processing Solutions Tools: Telecommunication Algorithms

Product Name: Multi-Channel DTMF Receiver
Company Name: Ensigma Ltd.
Features & Benefits:
  • One week free expert support
  • Up to 30 Channels of DTMF detection
  • 8-bit A-law PCM at 8kHz
  • 2.048Mbps TDM data input/detection output
  • Receiver recognition BW: -2.6% < RRB < +2.1%
TMS320 Devices Supported: C3x
Data Rate (kbps): 2.048Mbps
Program Memory (k word):
Data Memory (k word): 2.5kword
Processor Loading (MIPS):
Target Platform: TMS320C3x 33.3MHz
Hardware Requirements: TMS320C3x 33.3MHz, max loading 95%
Word Size:
Clock Rate:
Group Delays:
Technical Support/Training Available: Yes
Overview: The Ensigma multi-channel DTMF receiver provides up to 30 channels of DTMF detection on a single TMS320C3x. The number of channels, performance and interface can be easily adapted to a user's specific requirements. The DTMF software has been verified using the Mitel CIM7291 test tape and has been found to meet or exceed standard DTMF detection requirements.
Ideal Performance: Normal twist up to 8dB, reverse up to 5dB. Dynamic range 28dB, guard time 25.5ms. Minimum SNR 12dB.
Algorithm Verification: Talk off performance 20/6 (for 30ms/48ms guard times),when tested against Mitel CIM7291 DTMF test tape.
Availability:
Operating System Used:
Tools Supported By: Demo software available to run on TI EVM30 board.
Company Information: Ensigma Ltd.
Turing House, Station Rd.
Chepstow Wales NP6 5PB UK
Tel: +44 1291 625422
Fax: +44 1291 620301
e-mail: info@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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