view trunk/matlab/bmm/carfac/CARFAC_SAI_hacking.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 2013, Google, Inc.
% 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_SAI Matlab stuff:

clear variables

system('mkdir frames');

%%

dB_list = -40; %  -60:20:0

wav_fn = 'plan.wav';
wav_fn = 'Stiletto44.wav';
wav_fn = 'You Can Call Me Al.wav';

if ~exist(['./', wav_fn], 'file')
  error('wav file not found')
end

wav_fn
[file_signal, fs] = wavread(wav_fn);

% if fs == 44100
%   file_signal = (file_signal(1:2:end-1, :) + file_signal(2:2:end, :)) / 2;
%   fs = fs / 2;
% end
% 
% if fs ~= 22050
%   error('unexpected sample rate')
% end

file_signal = file_signal(:, 1);  % mono
file_signal = [file_signal; zeros(fs, 1)];  % pad with a second of silence


% make a long test signal by repeating at different levels:
test_signal = [];
for dB =  dB_list
  test_signal = [test_signal; file_signal * 10^(dB/20)];
end

%%
CF_struct = CARFAC_Design(1, fs);  % default design

CF_struct = CARFAC_Init(CF_struct);

[frame_rate, num_frames] = SAI_RunLayered(CF_struct, test_signal);

%%
png_name_pattern = 'frames/frame%05d.png';
MakeMovieFromPngsAndWav(round(frame_rate), png_name_pattern, ...
  wav_fn, ['CARFAC_SAI_movie_', wav_fn(1:end-4), '.mpg'])

%%
system('rm -r frames');