Cedar DNS 4, Руководство пользователя

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CEDAR DNS 4 dialogue noise suppressor
Page 21
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Bias
The encoder also provides control of the Bias, which is shown on the right-hand half of
each channel’s display. Click the encoder to enable adjustment of the Bias, and click it
again when you wish to switch back to controlling the Attenuation. The encoder will also
revert to controlling the Attenuation after a short idle period.
The Bias is a ‘center-zero’ control, and the fader shows the current position. Raise the
Bias to bias the algorithm toward detecting more noise. This will allow the process to
remove more noise, but may lead to compression of the wanted audio and make the
signal sound dry. Lower the Bias to bias the algorithm toward detecting less noise. This
will allow the process to retain more ‘atmos’, but may allow noise to leak back into the
wanted signal. In most cases, the optimum value for the Bias is the central, zero point.
The right-hand bargraph shows the detected signal to noise ratio (SNR). The solid bar
shows the noise level, and the shaded bar shows the signal level; consequently, the
difference between the heights of the solid and shaded bars indicates the SNR. You can
see the affect of altering the Bias reflected in the height of the solid bar, which tends to
increase as you raise the Bias, and vice-versa.