mirror of https://github.com/thesofproject/sof.git
74 lines
2.3 KiB
Matlab
74 lines
2.3 KiB
Matlab
function test = g_test_input(test)
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%% t = dr_test_input(t)
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%
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% Create tone data file for playback & record on real device or
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% for algorithm simulation.
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%
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% Input parameters
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% t.fs - sample rate
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% t.bits_in - signal word length
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% t.ch - mix test signal to channel ch
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% t.nch - total number of channels in data
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%
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% Output parameters
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% t.fn_in - created input file name
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% t.fn_out - proposed output file name for captured output
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% t.f - test signal frequency
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% t.tl - tone length in seconds
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% t.ts - tone start time
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% t.tr - tone gain ramp length in seconds
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% t.ti - ignore time from tone start and end, must be ti > tr
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% t.a - tone amplitude (lin)
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% t.a_db - tone amplitude (dB)
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% t.mark_t - length of marker tone in seconds
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% t.mark_a - amplitude max of marker tone (lin)
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% t.mark_a_db - amplitude max of marker tone (dB)
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%
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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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if nargin < 1
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fprintf('Warning, using default parameters!\n');
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test.fs = 48e3; test.bits=32; test.ch=1; test.nch=1;
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end
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if test.ch == 0
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test.ch = 1+round(rand(1,1)*(test.nch-1)); % Test random channel 1..Nch
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end
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for ch = test.ch
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fprintf('Using parameters Fs=%.1f, bits_in=%d, ch=%d, Nch=%d\n', ...
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test.fs/1e3, test.bits_in, ch, test.nch);
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end
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id = floor(rand(1,1) * 1e6);
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test.fn_in = sprintf('g_test_in_%d.%s', id, test.fmt);
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test.fn_out = sprintf('g_test_out_%d.%s', id, test.fmt);
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test.f = 997;
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%% Tone sweep parameters
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test.is = 20e-3; % Ignore signal from tone start
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test.ie = 20e-3; % Ignore signal from tone end
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test.tr = 10e-3; % Gain ramp time for tones
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test.sm = 3; % Seek start marker from 3s from start
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test.em = 3; % Seek end marker from 3s from end
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test.mt = 0.3; % Error if marker positions delta is greater than 0.3s
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test.tc = 25; % Min. 20 cycles of sine wave for a frequency
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test.a_db = -20; % -20 dBFS level
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test.a = 10^(test.a_db/20);
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% 0.5 seconds tone, this will be adjusted to be integer number of samples
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test.tl = 0.5;
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%% Mix the input file for test and write output
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test = mix_sweep(test);
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end
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