<< Chapter < Page | Chapter >> Page > |
Chamberlin filter topology is frequently used in music applications where very narrow-band, low-pass filters arenecessary. Chamberlin implementations do not suffer from some stability problems that arise in direct-form implementationsof very narrow-band responses. For more information about IIR/FIR filter design for DSPs, refer to the Motorola Application Note .
A Chamberlin filter is a simple two-pole IIR filter with the transfer function given in [link] :
[link] and [link] show how the response of the filter varies with ${Q}_{c}$ and ${F}_{c}$ .
First, create a MATLAB script that takes two parameters, ${Q}_{c}$ and ${F}_{c}$ , and plots the frequency response of a filter with a transfer function given in [link] . Then implement a Chamberlin filter on the DSP and compare itsperformance with that of your MATLAB simulation for the same values of ${Q}_{c}$ and ${F}_{c}$ . What do you observe?
Notification Switch
Would you like to follow the 'Dsp laboratory with ti tms320c54x' conversation and receive update notifications?