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NEDSP1062-KBD Operating Manual
1.6 DSP Noise cancellation.
The bhi DSP processes the incoming signal and then
differentiates the speech from the noise. The unwanted
noise and interference is then attenuated to leave only
the speech. The following diagrams are taken from actual
audio signals and illustrate how the signal is being
processed.
Figure 6. Noise cancellation.
Original signal.
Speech with a lot of
background noise
Processed speech.
Speech with reduced
noise
Speech Noise
Reduced noise
1.
Introduction.
