pvfamp(1)

NAME
pvfamp - pvf file amplitude adjustment.

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

DESCRIPTION
pvfamp increases or decreases the volume of the sound signal. Input and output is in the pvf (portable voice format) format.

OPTIONS
pvfamp can be called in the pipe mode:
    cat infile.pvf | pvfamp [optons] > outfile.pvf
    pvfamp [options] infile.pvf | <program> or with two file names:
    pvfamp [options] infile.pvf outfile.pvf Valid options are: -h brief help message -A <n> amplification factor (default is 1.0)
       n < 1 decreeses amplitude
       n > 1 increeses amplitude -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) Usually the -A option is the only option needed.

EXAMPLES
To double the volumn of a pvf file:
    pvfamp -A 2 infile.pvf outfile.pvf To convert a pdf file to a .wav file at 3/4 volumn:
    pvfamp -A 0.75 infile.pvf | pvftowav > outfile.wav

SEE ALSO
pvfcut, pvfecho, pvffft, pvffile, pvffilter, pvfmix, pvfnoise, pvfreverse, pvfsine, and pvfspeed

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