1function test = dr_test_input(test)
2
3%% t = dr_test_input(t)
4%
5% Create tone data file for playback & record on real device or
6% for algorithm simulation.
7%
8% Input parameters
9% t.fs        - sample rate
10% t.bits_in   - signal word length
11% t.ch        - mix test signal to channel ch
12% t.nch       - total number of channels in data
13%
14% Output parameters
15% t.fn_in     - created input file name
16% t.fn_out    - proposed output file name for captured output
17% t.f         - test signal frequency
18% t.tl        - tone length in seconds
19% t.ts        - tone start time
20% t.tr        - tone gain ramp length in seconds
21% t.ti        - ignore time from tone start and end, must be ti > tr
22% t.a         - tone amplitude (lin)
23% t.a_db      - tone amplitude (dB)
24% t.mark_t    - length of marker tone in seconds
25% t.mark_a    - amplitude max of marker tone (lin)
26% t.mark_a_db - amplitude max of marker tone (dB)
27%
28
29%%
30% Copyright (c) 2016, Intel Corporation
31% All rights reserved.
32%
33% Redistribution and use in source and binary forms, with or without
34% modification, are permitted provided that the following conditions are met:
35%   * Redistributions of source code must retain the above copyright
36%     notice, this list of conditions and the following disclaimer.
37%   * Redistributions in binary form must reproduce the above copyright
38%     notice, this list of conditions and the following disclaimer in the
39%     documentation and/or other materials provided with the distribution.
40%   * Neither the name of the Intel Corporation nor the
41%     names of its contributors may be used to endorse or promote products
42%     derived from this software without specific prior written permission.
43%
44% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
45% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
46% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
48% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
49% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
50% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
51% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
52% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
54% POSSIBILITY OF SUCH DAMAGE.
55%
56% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
57%
58
59%% Reference: AES17 6.2.3 Frequency response
60
61if nargin < 1
62        fprintf('Warning, using default parameters!\n');
63        test.fs = 48e3; test.bits_in=32; test.ch=1; test.nch=1;
64end
65
66if test.ch == 0
67        test.ch = 1+round(rand(1,1)*(test.nch-1)); % Test random channel 1..Nch
68end
69
70fprintf('Using parameters Fs=%.1f, bits=%d, ch=%d, Nch=%d\n', ...
71        test.fs/1e3, test.bits_in, test.ch, test.nch );
72
73%% Test tone parameters
74test.fn_in = sprintf('dr_test_in.%s', test.fmt);
75test.fn_out = sprintf('dr_test_out.%s', test.fmt);
76test.f = 997;
77test.a_db = -60;
78test.a = 10^(test.a_db/20);
79test.is = 1.0; % Ignore signal from tone start
80test.ie = 20e-3; % Ignore signal from tone end
81test.tr = 10e-3; % Gain ramp time for tones
82test.sm = 3; % Seek start marker from 3s from start
83test.em = 3; % Seek end marker from 3s from end
84test.mt = 0.3; % Error if marker positions delta is greater than 0.3s
85test.tc = 25; % Min. 20 cycles of sine wave for a frequency
86test.tl = 3;  % 3 seconds tone
87
88%% Mix the input file for test and write output
89test = mix_sweep(test);
90
91end
92