mirror of https://github.com/thesofproject/sof.git
54 lines
1.2 KiB
Matlab
54 lines
1.2 KiB
Matlab
function test = g_test_measure(test)
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% SPDX-License-Identifier: BSD-3-Clause
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% Copyright(c) 2017 Intel Corporation. All rights reserved.
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% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
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%% Reference: AES17 6.2.2 Gain
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% http://www.aes.org/publications/standards/
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default_result = NaN * ones(1,length(test.ch));
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test.g_db = default_result;
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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.fail = 1;
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return
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end
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%% Standard low-pass
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y0 = stdlpf(x, test.fu, test.fs);
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%% Find sync
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[d, nt, nt_use, nt_skip] = find_test_signal(y0, test);
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if isempty(d)
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test.fail = 1;
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return
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end
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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 = y0(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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test.g_db = level_out - level_in + test.att_rec_db;
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for i = 1:length(test.g_db)
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fprintf('Gain = %6.3f dB (expect %6.3f dB)\n', test.g_db(i), test.g_db_expect(i));
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end
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%% Check pass/fail
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test.fail = 0;
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delta_abs = abs(test.g_db_expect - test.g_db);
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idx = find(delta_abs > test.g_db_tol);
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for i = 1:length(idx)
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fprintf('Failed ch%d gain %f dB (max %f dB)\n', test.ch(i), test.g_db(i), test.g_db_tol);
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test.fail = 1;
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end
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end
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