Therefore the low-pass filter shown in diagram 63.1 must be used to obtain best results. This filter circuit is a fourth order Butterworth filter. The 3 dB cut-off frequency is around 2.5 kHz. When the frequency of the input signal is higher than oneanbsp;...
|Title||:||IOSS Applications Electronic Audio Circuits Sourcebook|
|Publisher||:||IOSS, LLC -|