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27 lines
821 B
27 lines
821 B
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% Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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%
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% Use of this source code is governed by a BSD-style license
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% that can be found in the LICENSE file in the root of the source
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% tree. An additional intellectual property rights grant can be found
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% in the file PATENTS. All contributing project authors may
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% be found in the AUTHORS file in the root of the source tree.
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%
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function [x, t] = readPCM(file, fs)
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%[x, t] = readPCM(file, fs)
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%
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%Reads a signal from a PCM file.
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%
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%x: The read signal after normalization.
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%t: The respective time vector.
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%
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%file: The PCM file where the signal is stored in int16 format.
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%fs: The signal sample rate in Hertz.
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fid = fopen(file);
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x = fread(fid, inf, 'int16');
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fclose(fid);
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x = x - mean(x);
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x = x / max(abs(x));
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t = 0:(1 / fs):((length(x) - 1) / fs);
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