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2.0 Noise Reduction
The PowerTalk™ head incorporates several technologically advanced processes to
filter out unwanted received noise, resulting in dramatically enhanced signal clarity.
Adaptive Digital Signal Processing (ADSP™), Spectral Noise Subtraction (SNS™) and
the Notch filter (tone suppressor) are three methods used by the PowerTalk™ head to
filter out signal noise. In addition, the user can adjust the quality of the audio signal by
setting the Low, High and Center frequency. These processes can be used separately or
in combination by the user to configure the audio to get the best possible reception.
2.1
Adaptive Digital Signal Processing (ADSP™)
The benefit of ADSP
2.2
Spectral Noise Subtraction (SNS™)
The benefit of SNS™ is illustrated by the following graph:
SGC Inc. SGC Building, 13737 S.E. 26th St. P.O.Box 3526, Bellevue, WA. 98009 USA
Fax: 206-746-6384 • Tel: 206- 746-6310 • 1-800-259-7331
© 1994 SGC, Inc.
June 28, 2004; 15:46
PowerTalk™ Manual
TM
is illustrated in the following graph:
2
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