PSYCH 3A03 Lecture Notes - Stapedius Muscle, Bone Conduction, Inner Ear
6 Sep 2013
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Document Summary
This outline summarizes major points covered in lecture. It is not intended to replace your own lecture notes. Cut-off frequency (fc) is frequency where signal energy = input signal energy (i. e. the -3 db frequency) Low pass allows frequencies below cutoff frequency to pass through unattenuated. High pass allows frequencies above cutoff frequency to pass through unattenuated. Band pass allows frequencies between lowpass cutoff and highpass cutoff to pass unattenuated. Band reject attenuates frequencies between lowpass cutoff and highpass cutoffs. A linear filter does not affect frequency component of signal, only amplitude and/or phase. Band pass and band reject filters have both a low-pass and a high-pass cutoff frequency. Roll-off rate: amount of attenuation (in db) per doubling of frequency (octave) Roll-off rate is measured starting from the cut-off frequency (fc) Filter bandwidth: difference in hz between high pass and low pas cut off frequencies (only applies for band pass and band reject filters)
