<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE>void sig2fbank</TITLE> <META NAME="GENERATOR" CONTENT="DOC++ 3.4.6"> </HEAD> <body bgcolor="#ffffff" link="#0000ff" vlink="#dd0000" text="#000088" alink="9000ff"> <A HREF = "http://www.cstr.ed.ac.uk/"> <IMG align=left BORDER=0 SRC = "cstr.gif"></A> <A HREF="http://www.cstr.ed.ac.uk/projects/speech_tools.html"> <IMG BORDER=0 ALIGN=right SRC="est.jpg" width=150 height=93></A> <br> <br clear=left> <p align=right> In file ../include/sigpr/EST_sigpr_frame.h:<TABLE BORDER=0><TR> <TD VALIGN=TOP><H2>void <A HREF="#DOC.DOCU">sig2fbank</A></H2></TD><TD><H2>(const <!1><A HREF="EST_FVector.html">EST_FVector</A> &sig,<BR> <!1><A HREF="EST_FVector.html">EST_FVector</A> &fbank_frame,<BR> const float <!1><A HREF="EST_Wave.html#DOC.81.5.3">sample_rate</A>,<BR> const bool use_power_rather_than_energy,<BR> const bool take_log)</H2></TD></TR></TABLE> <BLOCKQUOTE>Calculate the (log) energy (or power) in each channel of a Mel scale filter bank for a frame of speech.</BLOCKQUOTE> <A NAME="DOC.DOCU"></A> <HR> <H2>Documentation</H2> <BLOCKQUOTE>Calculate the (log) energy (or power) in each channel of a Mel scale filter bank for a frame of speech. The filters are triangular, are evenly spaced and are all of equal width, on a Mel scale. The upper and lower cutoffs of each filter are at the centre frequencies of the adjacent filters. The Mel scale is described under <TT>Hz2Mel</TT>. <P></BLOCKQUOTE> <DL><DT><DT><B>See Also:</B><DD><!1><A HREF="Hz2Mel.html">Hz2Mel</A> <BR><!1><A HREF="sig2fft.html">sig2fft</A> <BR><!1><A HREF="fft2fbank.html">fft2fbank</A><BR><DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I> <I><A HREF="HIER.html">HTML hierarchy of classes</A> or <A HREF="HIERjava.html">Java</A></I></P><HR> <A HREF = "http://www.ed.ac.uk/"> <IMG align=right BORDER=0 SRC = "edcrest.gif"></A> <P Align=left><I>This page is part of the <A HREF="http://www.cstr.ed.ac.uk/projects/speech_tools.html"> Edinburgh Speech Tools Library</A> documentation <br> Copyright <A HREF="http://www.ed.ac.uk"> University of Edinburgh</A> 1997 <br> Contact: <A HREF="mailto:speech_toolss@cstr.ed.ac.uk"> speech_tools@cstr.ed.ac.uk </a> </P> <br clear=right>