Active audio filter calculator amplification bandwidth frequency band pass gain - sengpielaudio
 
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Calculation: Active Audio Filter
 
Bass cut - CR filter, treble cut - RC filter, band pass
 
Original source (John Owen): http://www.vwlowen.co.uk/java/audio.htm

Type of filter
voltage gain
bandwidth in Hz, only band pass filter
frequency in kHz
value of C2 in nF
R1 = 
R2 = 
R3 = 
C1 = 
C2 = 
C3 = 
            
      
For a sound designer it is strange to cut off treble
frequencies with a low-pass filter and to cut off bass
frequencies with a high-pass filter. Filters change
the sound in special frequency regions.
Filters changing the bass frequencies are application-
oriented called low cut filter, bass cut filter, or rumble
filter. Filters changing the treble frequencies are
better called treble cut filter, high cut filter, or noise
filter
.
Aha!
 
Notice:
When you want to build your own amplifier,
take better the following calculation values:
Thomas Kugelstadt, "Active Filter Design Technique"

http://focus.ti.com/lit/ml/sloa088/sloa088.pdf
 
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