band pass filter

[surveypacific]

which is the quality factor of the wide band-pass filter with high and low cut-off frequencies equal to 950Hz and 250Hz.??can any body please help me to solve this i am not getting exact ans

[steve]

Q = fc / BW

Bandwidth:
BW = f2 − f1

Centre frequency:
fc = sqrt( f2 * f1 )

which is the quality factor of the wide band-pass filter with high and low cut-off frequencies equal to 950Hz and 250Hz.

fc = sqrt( 950 * 250 ) = 487.33971724
BW = 950 - 250= 700
Q = 487.33971724 / 700 = 0.696199596