Application Notes/Hints

This section provides various hints and guidelines to consider when designing voice-interface systems, including guidance for some specific applications such as moving frontends and non-voice use-cases.

• AEC Tuning and Integration Hints
  • Number of AEC Processing Filters
  • Microphone
  • Loudspeaker
  • Housing/Enclosure
• Latency
• Moving Frontends
  • Adaptation Times of Advanced Audio Frontends
  • End-to-End AI/DNN-Based Beamformer with AEC
• Capturing Non-Voice Audio
  • Basic Requirements for Non-Voice Audio Capture
  • Event Detection Algorithms and AI-Based Classifiers
• Low Power Listening Concepts
  • 1st Stage: Smart Microphone with Basic Level Detector or VAD
  • 2nd Stage: XCORE in Low-Power Mode Running VAD
  • 3rd Stage: XCORE in Full-Power Mode Running Automatic Speech Recognition
  • 4th Stage (Optional): Host SoC Wakes Up for Advanced Tasks
  • Hints