EXAMPLE OUTPUT FROM A DIGITAL FILTER BANK
- Digital filter bank outputs for a speech signal shown in (a),
consisting of the word speech.
In (b), the output from a filter with
a center frequency of 250 Hz and a bandwidth of 100 Hz is shown.
In (c), the output from a filter centered at 2500 Hz is shown.
- Note that the amplitude of the
output for each filter varies depending on the nature of the
sound. The final ch sound, for example, is mainly composed of high
frequency information.