.TH SNDFILE-MIX-TO-MONO 1 "December 14, 2009" .SH NAME sndfile-mix-to-mono \- mix a multi\-channel sound file to mono .SH SYNOPSIS .B sndfile-mix-to-mono .RI " " .SH DESCRIPTION sndfile\-mix\-to\-mono reads a multi\-channel input file and writes a single channel output file consisting of all of the input channels mixed together (like a audio mixing desk would do). The input and output files are read/written using libsndfile (http://www.mega\-nerd.com/libsndfile/). .LP The format of the output file is determined by the filename extension of the output file. .SH AUTHOR This manual page was written by Erik de Castro Lopo .