blob: 40c98716c55f20fd391d52e6c6580e4a6fd11050 [file] [log] [blame]
function test = g_test_measure(test)
%%
% Copyright (c) 2017, Intel Corporation
% All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
% * Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
% * Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
% * Neither the name of the Intel Corporation nor the
% names of its contributors may be used to endorse or promote products
% derived from this software without specific prior written permission.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
% POSSIBILITY OF SUCH DAMAGE.
%
% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
%
%% Reference: AES17 6.2.2 Gain
% http://www.aes.org/publications/standards/
%% Load output file
[x, nx] = load_test_output(test);
if nx == 0
test.g_db = NaN;
test.fail = 1;
return
end
%% Standard low-pass
y0 = stdlpf(x, test.fu, test.fs);
%% Find sync
[d, nt, nt_use, nt_skip] = find_test_signal(y0, test);
%% Trim sample by removing first 1s to let the notch to apply
i1 = d+nt_skip;
i2 = i1+nt_use-1;
y = y0(i1:i2);
%% Gain, SNR
level_in = test.a_db;
level_out = level_dbfs(y);
test.g_db = level_out-level_in;
fprintf('Gain = %6.3f dB (expecting %6.3f dB)\n', test.g_db, test.g_db_expect);
%% Check pass/fail
test.fail = 0;
if abs(test.g_db_expect-test.g_db) > test.g_db_tol
fprintf('Failed gain %f dB (max %f dB)\n', test.g_db, test.g_db_tol);
test.fail = 1;
end
end