| aleloi | 0e4a685 | 2017-03-28 10:18:58 -0700 | [diff] [blame] | 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 | |
| pbos@webrtc.org | 788acd1 | 2014-12-15 09:41:24 +0000 | [diff] [blame] | 11 | function [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. |
| 21 | fid = fopen(file); |
| 22 | x = fread(fid, inf, 'int16'); |
| 23 | fclose(fid); |
| 24 | x = x - mean(x); |
| 25 | x = x / max(abs(x)); |
| 26 | t = 0:(1 / fs):((length(x) - 1) / fs); |