db_nc_audio_recon.m

Demonstrates perfect reconstruction filter bank operation for audio processing.

Implements 4-channel tree-structured PR filter bank using 5th order Butterworth half-band filters constructed with 1st order allpass structures. Uses double-buffer, non-causal IIR synthesis filtering technique to process and play original multi-channel audio file,reconstructed audio file using uniform 16-bit quantization and PR structure described above, and error signal.