Description: This routine returns the coefficients of the 𝑁 -coefficient symmetric prototype filter 𝐻 (𝑧 ). The coefficients are normalized to have energy 1/2. When the analysis and synthesis filters are configured as shown above, the overall system has an impulse response with a unity coefficient at a delay of 𝑁 − 1 samples.
The procedure described in the paper above was modified to employ a cautious update during the iteration process – without this modification, the procedure did not converge.
Example
A sample use of QMFDesign is shown below.
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File list (Check if you may need any files):
PR_Nguyen\confun.m
.........\license.txt
.........\myfun.m
.........\PR_Nguyen.m
.........\P_NPR.m
PR_Nguyen
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