BHI NEMS, Руководство по эксплуатации и установке

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Page 5 NEMS operating manual
1.3 Audio DSP Noise cancellation.
The bhi DSP processes the incoming audio signal and then
differentiates the speech from the noise. The unwanted noise
and interference are then attenuated to leave only the speech.
The following diagrams are taken from actual audio signals and
illustrate how the audio signal is being processed.
Figure 1. Audio signal before processing.
Figure 2. Audio signal after processing.
Original signal.
Speech with a lot of
background noise
Speech Noise
Processed speech.
Speech with reduced
noise
1.
Overview