Supplemental material for DAFx'05 submission
 
SCALABLE PERCEPTUAL MIXING AND FILTERING OF AUDIO SIGNALS
USING AN AUGMENTED SPECTRAL REPRESENTATION

N. Tsingos
REVES - INRIA Sophia Antipolis

All example files are .wav (PCM int 16 bits or IEEE 32-bit floating point format)
 
 

Mixing and equalization application:
 
Reference mix
Mix calculated with masking evaluation and all 4096 FFT coefficients/frame
Mix calculated with masking evaluation and up to 2000 FFT coefficients
Mix calculated with masking evaluation and up to 500 FFT coefficients
Mix calculated with masking evaluation and up to 500 FFT coefficients
using an optimized encoding of the input data.

 

Block FIR reverberation application:
 

Rotor example  (original sound)

 
Reference processing

Processing with masking turned on and all FFT coeffficients

Processing with masking turned on and 50000 coeffficients

Processing with masking turned on and 10000 coeffficients

Processing with masking turned on and 5000 coeffficients
 
 

Song example  (original sound)
 
Reference processing

Processing with masking turned on and all FFT coeffficients

Processing with masking turned on and 50000 coeffficients

Processing with masking turned on and 10000 coeffficients

Processing with masking turned on and 5000 coeffficients


Voice example  (original sound)

 
Reference processing

Processing with masking turned on and all FFT coeffficients

Processing with masking turned on and 50000 coeffficients

Processing with masking turned on and 10000 coeffficients

Processing with masking turned on and 5000 coeffficients

 
3D audio application:

1000 sound sources (the red spheres in the pictures) spatialized in real-time !

click here for an example movie file (.avi divx 5.2.1 format ~12 MBytes)

                         
First person view (bigger pic)                                 Top view (bigger pic)

 
Reference processing

Processing with masking turned on and 80000 coeffficients

Processing with masking turned on and 50000 coeffficients

Processing with masking turned on and 10000 coeffficients