Mercurial > hg > sv-dependency-builds
diff src/libsamplerate-0.1.9/doc/index.html @ 126:4a7071416412
Current libsamplerate source
author | Chris Cannam <cannam@all-day-breakfast.com> |
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date | Tue, 18 Oct 2016 13:24:45 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/libsamplerate-0.1.9/doc/index.html Tue Oct 18 13:24:45 2016 +0100 @@ -0,0 +1,129 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<HTML> + +<HEAD> + <TITLE> + Secret Rabbit Code (aka libsamplerate) + </TITLE> + <META NAME="Author" CONTENT="Erik de Castro Lopo (erikd AT mega-nerd DOT com)"> + <META NAME="Version" CONTENT="libsamplerate-0.1.8"> + <META NAME="Description" CONTENT="The Secret Rabbit Code Home Page"> + <META NAME="Keywords" CONTENT="libsamplerate sound resample audio dsp Linux"> + <LINK REL=StyleSheet HREF="SRC.css" TYPE="text/css" MEDIA="all"> +</HEAD> + +<BODY TEXT="#FFFFFF" BGCOLOR="#000000" LINK="#FB1465" VLINK="#FB1465" ALINK="#FB1465"> +<!-- pepper --> +<CENTER> + <IMG SRC="SRC.png" HEIGHT=100 WIDTH=760 ALT="SRC.png"> +</CENTER> +<!-- pepper --> +<BR> +<!-- pepper --> +<TABLE ALIGN="center" WIDTH="98%"> +<TR> +<TD VALIGN="top"> +<BR> +<DIV CLASS="nav"> + <BR> + <A HREF="index.html">Home</A><BR> + <A HREF="license.html">License</A><BR> + <A HREF="history.html">History</A><BR> + <A HREF="download.html">Download</A><BR> + <A HREF="quality.html">Quality</A><BR> + <A HREF="api.html">API</A><BR> + <A HREF="bugs.html">Bug Reporting</A><BR> + <A HREF="win32.html">On Win32</A><BR> + <A HREF="faq.html">FAQ</A><BR> + <A HREF="lists.html">Mailing Lists</A><BR> + <A HREF="ChangeLog">ChangeLog</A><BR> +<BR> +<DIV CLASS="block"> +Author :<BR>Erik de Castro Lopo +<!-- pepper --> +<BR><BR> +<!-- pepper --> + +</DIV> + <IMG SRC= + "/cgi-bin/Count.cgi?ft=6|frgb=55;55;55|tr=0|md=6|dd=B|st=1|sh=1|df=src.dat" + HEIGHT=30 WIDTH=100 ALT="counter.gif"> +</DIV> + +</TD> +<!-- pepper --> +<!-- ######################################################################## --> +<!-- pepper --> +<TD VALIGN="top"> +<DIV CLASS="block"> +<BR> + +<TABLE ALIGN="center" WIDTH="80%"> +<TR><TD> +<P> + <I> + "Choosing a sample rate coverter wasn't easy. We ran numerous tests with + Secret Rabbit Code and other sample rate converters, then compared them all. + In the end, SRC outperformed the others, including some extremely well known + and popular software. We had one issue with SRC, but after emailing Erik, he + got back to us immediately with an answer. Choosing SRC was a no brainer." + </I><BR> + Ryan Smith, International Marketing Manager, <BR> + <A HREF="http://emersys.co.kr/">Emersys Corp.</A>, South Korea.<BR> + Product : <A HREF="http://maven3d.com">Maven3D</A> + +</P> +</TD></TR> +</TABLE> +<P> + <B>S</B>ecret <B>R</B>abbit <B>C</B>ode (aka libsamplerate) is a + <B>S</B>ample <B>R</B>ate <B>C</B>onverter for audio. + One example of where such a thing would be useful is converting audio + from the CD sample rate of 44.1kHz to the 48kHz sample rate used by + DAT players. +</P> +<!-- pepper --> +<P> + <B>SRC</B> is capable of arbitrary and time varying conversions ; from + downsampling by a factor of 256 to upsampling by the same factor. + Arbitrary in this case means that the ratio of input and output + sample rates can be an irrational number. + The conversion ratio can also vary with time for speeding up and slowing + down effects. +</P> +<!-- pepper --> +<P> + <B>SRC</B> provides a small set of converters to allow quality to + be traded off against computation cost. + The current best converter provides a signal-to-noise ratio of 145dB + with -3dB passband extending from DC to 96% of the theoretical + best bandwidth for a given pair of input and output sample rates. +</P> +<!-- pepper --> +<P> + Since the library has few dependencies beyond that provided by the + standard C library, it should compile and work on just about any + operating system. + It is known to work on Linux, MacOSX, + <A HREF="win32.html">Win32</A> + and Solaris. + With some relatively minor hacking it should also be relatively easy + to port it to embedded systems and digital signal processors. +</P> +<!-- pepper --> +<P> + In addition, the library comes with a comprehensive test suite which + can validate the performance of the library on new platforms. +</P> + +<!-- pepper --> +<!-- <A HREF="mailto:aldel0305@mega-nerd.com">For the spam bots</A> --> +<!-- pepper --> + +</DIV> +</TD></TR> +</TABLE> + +</BODY> +</HTML> +