1%
2%  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
3%
4%  Use of this source code is governed by a BSD-style license
5%  that can be found in the LICENSE file in the root of the source
6%  tree. An additional intellectual property rights grant can be found
7%  in the file PATENTS.  All contributing project authors may
8%  be found in the AUTHORS file in the root of the source tree.
9%
10
11function [x, t] = readPCM(file, fs)
12%[x, t] = readPCM(file, fs)
13%
14%Reads a signal from a PCM file.
15%
16%x: The read signal after normalization.
17%t: The respective time vector.
18%
19%file: The PCM file where the signal is stored in int16 format.
20%fs: The signal sample rate in Hertz.
21fid = fopen(file);
22x = fread(fid, inf, 'int16');
23fclose(fid);
24x = x - mean(x);
25x = x / max(abs(x));
26t = 0:(1 / fs):((length(x) - 1) / fs);
27