Frequency and filters

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#1 21659545 17 Aug 2011 19:53

John Clark John Clark

Anonymous

Post #1
21659545 17 Aug 2011 19:53

A band-pass filter has an upper critical frequency of 15.00 kHz. Determine the bandwidth of the circuit
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#2 21659546 17 Aug 2011 20:30

Mohammad Honarparvar Mohammad Honarparvar

Anonymous

Post #2
21659546 17 Aug 2011 20:30

Dear Clark
Hi,
what you mean about the bandwidth of the circuit ?
in the bandpass filters usually two frequencies is defined (in fact four frequencies! for more detail refer to filter design textbook ),Flow and Fhigh and the bandwidth of the filter is BW=Fhigh-Flow
so please explain with more details
see the attached file
#3 21659547 18 Aug 2011 05:50

Mike Burr Mike Burr

Anonymous

Post #3
21659547 18 Aug 2011 05:50

Without more information it is difficult to help. Certain assumptions can be made with the upper critical frequency. 15kHz, is approximately the upper range of human hearing, so it would appear that you were looking for audio frequencies. However if you're looking to section out the upper, middle and lower, then you definitely need the other(lower) to give center freq, and work from there for roll-off.
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Frequency and filters

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