Acoustic Signal Processing (Source Enhancement, Localization, Detection) in Low SNR Environments

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Enhancement results

1. SNR -17.09 (1m between sound source and hovering multi-rotor UAV)
  • sound enhanced by RICEN
  • noisy sound
  • noise sound
  • clean sound


2. SNR -21.37 (5m between sound source and rotating multi-rotor UAV)
  • sound enhanced by RICEN
  • noisy sound
  • noise sound
  • clean sound


3. SNR -27.14 (10m between sound source and shifting(moving) multi-rotor UAV)
  • sound enhanced by RICEN
  • noisy sound
  • noise sound
  • clean sound

Localization & Detection results

  • noisy Log Magnitude Spectra
  • clean Log Magnitude Spectra
  • estimated Direction of Arrival
  • detected voice activity

1. SNR -21.37 (5m between sound source and rotating multi-rotor UAV)

direction of arrive at 100 degree

2. SNR -25.05 (5m between sound source and hovering multi-rotor UAV)

direction of arrive at 160 degree

3. SNR -27.14 (10m between sound source and shifting(moving) multi-rotor UAV)

direction of arrive at 80 degree

4. SNR -35.93 (15m between sound source and shifting(moving) multi-rotor UAV)

direction of arrive at 20 degree
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Audio Recognition

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