92 lines
3.1 KiB
Matlab
92 lines
3.1 KiB
Matlab
function test = chirp_test_analyze(test)
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%%
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% Copyright (c) 2017, Intel Corporation
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% All rights reserved.
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%
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% Redistribution and use in source and binary forms, with or without
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% modification, are permitted provided that the following conditions are met:
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% * Redistributions of source code must retain the above copyright
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% notice, this list of conditions and the following disclaimer.
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% * Redistributions in binary form must reproduce the above copyright
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% notice, this list of conditions and the following disclaimer in the
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% documentation and/or other materials provided with the distribution.
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% * Neither the name of the Intel Corporation nor the
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% names of its contributors may be used to endorse or promote products
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% derived from this software without specific prior written permission.
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%
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% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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% POSSIBILITY OF SUCH DAMAGE.
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%
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% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
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%
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%% Load output file
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[x, nx] = load_test_output(test);
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if nx < 1
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test.fail = -1; % No data
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return;
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end
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%% Find sync
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[d, nt, nt_use, nt_skip] = find_test_signal(x(:,test.ch(1)), test);
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%% Trim sample
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i1 = d+nt_skip;
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i2 = i1+nt_use-1;
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z = x(i1:i2, :);
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y = z(:,test.ch);
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s = sum(z,2);
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%% Quick check length, RMS, offset, and channels sum
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sz = size(z);
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tz = sz(1)/test.fs;
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et = abs(test.cl-tz)/test.cl;
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rms_db = 10*log10(mean(z.^2)) + 20*log10(sqrt(2));
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offs_db = 20*log10(abs(mean(z)));
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sum_max_db = 20*log10(max(abs(s)));
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% Check for proper ratio of out/in samples, minimum level, maximum offset
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% and maximum of sum of channels. The input is such that the channels should
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% sum to zero. A phase difference in channels would cause non-zero output
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% for channels sum. Dithered input causes a small non-zero sum value.
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if et > 0.05
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fail = 1;
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fprintf('Failed output chirp length, err=%f, t=%f.\n', et, tz);
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else if (min(rms_db) < -3) && (test.fs2 + 1 > test.fs1)
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fail = 1;
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fprintf('Failed output chirp level.\n');
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else if max(offs_db) > -40
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fail = 1;
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fprintf('Failed output chirp DC offset.\n');
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else if (sum_max_db > -100) && (mod(test.nch, 2) == 0)
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fail = 1;
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fprintf('Failed output chirp channels phase.\n');
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else
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fail = 0;
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end
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end
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end
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end
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test.fh = figure('visible', test.visible);
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ns = 1024;
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no = round(0.9*ns);
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specgram(y(:,1), ns, test.fs, kaiser(ns,27), no);
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colormap('jet');
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caxis([-150 0]);
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colorbar('EastOutside');
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test.fail = fail;
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end
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