View License

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

» Watch video

Highlights from

Be the first to rate this file! 5 Downloads (last 30 days) File Size: 2.39 KB File ID: #19478 Version: 1.0
image thumbnail




07 Apr 2008 (Updated )

FIRQUEST optimizes the quantization of FIR coefficients.

| Watch this File

File Information

FIRQUEST searches for a quantized filter with optimal stopband rejection, using an unquantized filter as a starting point. Trial filters are generated using the error spectral shaping technique, which is described in:

J.J. Nielsen, 'Design of Linear-Phase Direct-Form FIR Digital Filters
with Quantized Coefficients Using Error Spectrum Shaping Techniques',
IEEE Transactions on Acoustics, Speech and Signal Processing,
vol. ASSP-37, pp. 1020-1026, july 1989.

Compared to ordinary rounding, the generated filters will have lower errors in the stopband, and larger errors in the passband. With the appropriate shaping filter, the stopband can be lowered by as much as 28 dB compared to ordinary rounding.

Required Products Filter Design Toolbox
MATLAB release MATLAB 7.4 (R2007a)
Tags for This File   Please login to tag files.
Please login to add a comment or rating.

Contact us