Acoustic echo cancellation  for softphones
Product description
DIGITAL SPEECH offers integrated solution Speech Enhancement for PC and mobile softphones. Supported platforms : Windows, Windows Mobile, Linux. Proposed module works via Wave In/Out interface in user mode. This product was designed for work with arbitrary acoustic subsystem (microphone, loudspeaker, position of microphone in respect to loudspeaker). SE module for PC and mobile softphone resolves the the main problem of PC and mobile platforms - time clock drift between playing and capturing sound..
Speech enhancement flow chart
Speech enhancement components:
  • Full duplex Acoustic echo canceller (AEC)
  • Half duplex Acoustic echo suppressor (AES)
  • Noise suppressor (NS)
  • Voice activity detector (VAD)
  • Adaptive Gain Control (AGC)
  • Non-linear processor (NLP)
  • Comfort noise generator (CNG)
  • Anti-howling system (AHS)
  • Universal resampler