view trunk/matlab/bmm/carfac/CARFAC_binaural.m @ 690:76f749d29b48

Fix memory leak in CARFAC.

Also get rid of most uses of auto, which tend to hurt readability
unless the type name is particularly long, especially when it masks
pointers.

% Copyright 2012 Google Inc. All Rights Reserved.
% Author: Richard F. Lyon
%
% This Matlab file is part of an implementation of Lyon's cochlear model:
% "Cascade of Asymmetric Resonators with Fast-Acting Compression"
% to supplement Lyon's upcoming book "Human and Machine Hearing"
%
% Licensed under the Apache License, Version 2.0 (the "License");
% you may not use this file except in compliance with the License.
% You may obtain a copy of the License at
%
%     http://www.apache.org/licenses/LICENSE-2.0
%
% Unless required by applicable law or agreed to in writing, software
% distributed under the License is distributed on an "AS IS" BASIS,
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
% See the License for the specific language governing permissions and
% limitations under the License.

% Test/demo hacking for carfac matlab stuff, two-channel (binaural) case

clear variables

agc_plot_fig_num = 1;

tic

file_signal = wavread('plan.wav');
file_signal = file_signal(9000+(1:15000));  % trim for a faster test

itd_offset = 22;  % about 1 ms
test_signal = [file_signal((itd_offset+1):end), ...
               file_signal(1:(end-itd_offset))] / 10;
             
CF_struct = CARFAC_Design;  % default design

% Run stereo test:
n_ears = 2
CF_struct = CARFAC_Init(CF_struct, n_ears);
  
[CF_struct, nap_decim, nap] = CARFAC_Run(CF_struct, test_signal, agc_plot_fig_num);

% Display results for 2 ears:
for ear = 1:n_ears
  smooth_nap = nap_decim(:, :, ear);
  figure(ear + n_ears)  % Makes figures 3 and 4
  image(63 * ((smooth_nap)' .^ 0.5))

  colormap(1 - gray);
end

toc

% Show resulting data, even though M-Lint complains:
CF_struct
CF_struct.CAR_state
CF_struct.AGC_state
min_max = [min(nap(:)), max(nap(:))]
min_max_decim = [min(nap_decim(:)), max(nap_decim(:))]