"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "sigpr/sigpr_frame.cc" between
speech_tools-2.4-release.tar.gz and speech_tools-2.5.0-release.tar.gz

About: The speech_tools - Edinburgh Speech Tools Library (used by the Festival Speech Synthesis System).

sigpr_frame.cc  (speech_tools-2.4-release)	:	sigpr_frame.cc  (speech_tools-2.5.0-release)
skipping to change at line 726		skipping to change at line 726
PI_over_liftering_parameter = PI; // since sin(n.PI) == 0		PI_over_liftering_parameter = PI; // since sin(n.PI) == 0
// if we are not including cepstral coeff 0 (c0) then we need		// if we are not including cepstral coeff 0 (c0) then we need
// to do a cosine transform 1 longer than otherwise		// to do a cosine transform 1 longer than otherwise
cos_xform_order = include_c0 ? mfcc_vec.length() : mfcc_vec.length() + 1;		cos_xform_order = include_c0 ? mfcc_vec.length() : mfcc_vec.length() + 1;
const_factor = sqrt(2 / (float)(fbank_vec.length()));		const_factor = sqrt(2 / (float)(fbank_vec.length()));
for(i=0;i<mfcc_vec.length();i++)		for(i=0;i<mfcc_vec.length();i++)
{		{
actual_mfcc_index = include_c0 ? i : i+1;		actual_mfcc_index = include_c0 ? i : i+1;
pi_i_over_N =		pi_i_over_N =
PI * (float)(actual_mfcc_index) / (float)(fbank_vec.length());		PI * (float)(actual_mfcc_index) / (float)(fbank_vec.length());
for(j=0;j<fbank_vec.length();j++)		for(j=0;j<fbank_vec.length();j++)
// j + 0.5 is because we want (j+1) - 0.5		// j + 0.5 is because we want (j+1) - 0.5
mfcc_vec[i] += fbank_vec(j) * cos(pi_i_over_N * ((float)j + 0.5));		mfcc_vec[i] += fbank_vec(j) * cos(pi_i_over_N * ((float)j + 0.5));
mfcc_vec[i] *= const_factor;		mfcc_vec[i] *= const_factor;
End of changes. 1 change blocks.
1 lines changed or deleted		0 lines changed or added

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