mirror of https://github.com/thesofproject/sof.git
77 lines
2.5 KiB
Mathematica
77 lines
2.5 KiB
Mathematica
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function test = dr_test_measure(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 == 0
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test.dr_db = NaN;
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test.fail = 1;
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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);
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%% Notch filter
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y0n = stdnotch(x, test.f, test.fs);
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%% CCIR-RMS weighting filter
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y0w = stdweight(y0n, test.fs);
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%% Trim sample by removing first 1s to let the notch to apply
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i1 = d+nt_skip;
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i2 = i1+nt_use-1;
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y = x(i1:i2);
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y_n = y0w(i1:i2);
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%% Gain, SNR
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level_in = test.a_db;
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level_out = level_dbfs(y);
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level_final = level_dbfs(y_n);
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test.dr_db = level_out-level_final-test.a_db;
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fprintf('DR = %5.1f dB\n', test.dr_db);
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if 0
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plot(y);
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hold on
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plot(y_n,'g');
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hold off
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end
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%% Check pass/fail
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test.fail = 0;
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if test.dr_db < test.dr_db_min
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fprintf('Failed DR %f dB (min %f dB)\n', test.dr_db, test.dr_db_min);
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test.fail = 1;
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end
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end
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