Contract DSP software development

DTMF receiver/transmitter

DTMF (or Multy Frequency Push-Buttons) receiver/transmitter software implements all 16 DTMF digits generation and detection, according to ITU-T Q.23 and Q.24, Bellcore and MITEL requirements. DTMF detector is designed to provide immunity to speech and other interfere signals, under various network conditions.

  • Configurable level, twist and duration values
  • 16-bit 8 KHz sampled data
  • Re-entrant, relocatable, multi-channel capable code
  • Optimized C code, C-callable API (TI 54XX only)
  • Loop System Co. Ltd.
  • Improv Systems, Inc
  • 74ZE Engineering, Inc
  • Parabyte Co. Ltd.
  • Pulsar Group of companies
  • EasyPQ Technologies Pvt. Ltd.
  • NIC Test Electro
  • Telecomequipment