Unformatted text preview: ) = (T L )*ln(2)] Frequency response – cutoff frequency Solve : [SEE PAGE 7 IN EXPERIMENT 5 NOTES] Definition : In a filter, the cutoff frequency is the point where the response is 3 dB down in amplitude from the level of the passband. Beyond the cutoff frequency, the filter will attenuate all other frequencies, depending on the design of the filter. Frequency response – quality factor (only used for bandpass) Solve : Q = f o / (f 2 – f 1 ) Definition : A measure of the sharpness of resonance or frequency selectivity of a resonant vibratory system having a single degree of freedom, either mechanical or electrical. For plotting on logarithmic paper, use: 20 log 10 |H(jw)| (result in dB – decibels)...
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- Winter '03
- Low-pass filter, Mathematical Expression