pvfspeed(1)

NAME
pvfspeed - changes the sample rate of the voice file.

SYNOPSIS
pvfspeed [options] [<pvffile in> [<pvffile out>]]

DESCRIPTION
pvfspeed changes the sample rate of the voice file. It does this by interpolating the samples at the new rate. Input and output is in the pvf (portable voice format) format.

OPTIONS
pvfreverse can be called in the pipe mode:
    cat infile.pvf | pvfspeed [optons] > outfile.pvf or with two file names:
    pvfspeed [options] infile.pvf outfile.pvf Valid options are: -h brief help message -s <n> new number of samples per seconds (default is old one) -a output pvf ascii format -b output pvf binary format (default) -8 output 8 bit samples -16 output 16 bit samples -32 output 32 bit samples (default) You will normaly not need any options.

EXAMPLES
To prepare a .wav file for use with a Rockwell modem:
    wavtopvf infile.wav | pvfspeed -s 7200 | \
    pvftormd Rockwell 4 > outfile.rmd If you are trying to combind two files of different sample rates, you can combind pvfspeed with pvfmix. If you have one file sampled at 11000 and one at 7200 and you want the output file at 7200 for your modem, you can use something like this:
    pvfspeed -s 7200 infile1.pvf | \
    pvfmix -N infile2.pvf > outfile.pvf

SEE ALSO
pvfamp, pvfcut, pvfechot, pvfff, pvffile, pvffilter, pvfmix, pvfnoise, pvfnoise, and pvfsine

AUTHOR
Mikkel L. Ellertson <mikkel@infinity-ltd.com>