104 lines
4.0 KiB
Matlab
104 lines
4.0 KiB
Matlab
function test = aap_test_input(test)
|
|
|
|
%% t = aap_test_input(t)
|
|
%
|
|
% Create frequency sweep data file for playback & record on real device or
|
|
% for algorithm simulation.
|
|
%
|
|
% Input parameters
|
|
% t.f_start - start frequency
|
|
% t.f_end - end frequency
|
|
% t.fs - sample rate
|
|
% t.bits_in - number of bits in signal
|
|
% t.ch - mix test signal to channel ch
|
|
% t.nch - total number of channels in data
|
|
%
|
|
% Output parameters
|
|
% t.fn_in - created input file name
|
|
% t.fn_out - proposed output file name for captured output
|
|
% t.f - frequencies in sweep
|
|
% t.nf - number of frequencies
|
|
% t.tl - tone length in seconds
|
|
% t.ts - tone start times
|
|
% t.tr - tone gain ramp length in seconds
|
|
% t.ti - ignore time from tone start and end, must be ti > tr
|
|
% t.a - tone amplitude (lin)
|
|
% t.a_db - tone amplitude (dB)
|
|
% t.mark_t - length of marker tone in seconds
|
|
% t.mark_a - amplitude max of marker tone (lin)
|
|
% t.mark_a_db - amplitude max of marker tone (dB)
|
|
%
|
|
|
|
%%
|
|
% 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 6.6.6 Attenuation of alias products
|
|
% http://www.aes.org/publications/standards/
|
|
|
|
if nargin < 1
|
|
error('This function must be called with argunment.');
|
|
end
|
|
|
|
if test.ch == 0
|
|
test.ch = 1+round(rand(1,1)*(test.nch-1)); % Test random channel 1..Nch
|
|
end
|
|
|
|
fprintf('Using parameters Fstart=%d Hz, Fend=%d Hz, Fs=%.1f kHz, bits_in=%d, ch=%d, nch=%d\n', ...
|
|
test.f_start, test.f_end, test.fs, test.bits_in, test.ch, test.nch);
|
|
|
|
|
|
test.fn_in = sprintf('aap_test_in.%s', test.fmt);
|
|
test.fn_out = sprintf('aap_test_out.%s', test.fmt);
|
|
f_first = 997;
|
|
f_max = max(test.f_start, test.f_end);
|
|
f_min = min(test.f_start, test.f_end);
|
|
n_third = ceil(log(f_max/f_min)/log(2)*3); % max 1/3 octave step
|
|
steps = max(n_third, 50); % Min 50 steps
|
|
test.f = [f_first logspace(log10(test.f_start), log10(test.f_end), steps) ];
|
|
|
|
%% Tone sweep parameters
|
|
test.is = 20e-3; % Ignore signal from tone start
|
|
test.ie = 20e-3; % Ignore signal from tone end
|
|
test.tr = 10e-3; % Gain ramp time for tones
|
|
test.sm = 3; % Seek start marker from 3s from start
|
|
test.em = 3; % Seek end marker from 3s from end
|
|
test.mt = 0.3; % Error if marker positions delta is greater than 0.3s
|
|
test.tc = 20; % Min. 20 cycles of sine wave for a frequency
|
|
t_min = 0.2;
|
|
test.a_db = -20;
|
|
test.a = 10^(test.a_db/20);
|
|
% Use t_min or min cycles count as tone length
|
|
test.tl = max(test.tc*1/min(test.f),t_min);
|
|
|
|
%% Mix the input file for test and write output
|
|
test = mix_sweep(test);
|
|
|
|
end
|