bpdq_compute_snr : Calculate SNR snr=bpdq_compute_snr(u,v) Note : Signals are assumed to be zero mean, so signal and noise power computed without explicitly subtracting off the mean. Inputs : u,v input signals Outputs: snr - calculated SNR (in dB) This file is part of BPDQ Toolbox (Basis Pursuit DeQuantizer) Copyright (C) 2009, the BPDQ Team (see the file AUTHORS distributed with this library) (See the notice at the end of the file.)
0001 % bpdq_compute_snr : Calculate SNR 0002 % 0003 % snr=bpdq_compute_snr(u,v) 0004 % 0005 % Note : Signals are assumed to be zero mean, so signal and noise 0006 % power computed without explicitly subtracting off the mean. 0007 % 0008 % Inputs : 0009 % u,v input signals 0010 % 0011 % Outputs: 0012 % snr - calculated SNR (in dB) 0013 % 0014 % This file is part of BPDQ Toolbox (Basis Pursuit DeQuantizer) 0015 % Copyright (C) 2009, the BPDQ Team (see the file AUTHORS distributed with 0016 % this library) (See the notice at the end of the file.) 0017 0018 function snr=bpdq_compute_snr(u,v) 0019 snr=20*log10(norm(u)/norm(u-v)); 0020 0021 % The BPDQ Toolbox is free software: you can redistribute it and/or modify 0022 % it under the terms of the GNU General Public License as published by 0023 % the Free Software Foundation, either version 3 of the License, or 0024 % (at your option) any later version. 0025 % 0026 % The BPDQ Toolbox is distributed in the hope that it will be useful, 0027 % but WITHOUT ANY WARRANTY; without even the implied warranty of 0028 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0029 % GNU General Public License for more details. 0030 % 0031 % You should have received a copy of the GNU General Public License 0032 % along with The BPDQ Toolbox. If not, see <http://www.gnu.org/licenses/>. 0033