pvfecho(1)

NAME
pvfecho - adds echo to sound signal.

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

DESCRIPTION
pvfecho adds echo to the sound signal. Input and output is in the pvf (portable voice format) format.

OPTIONS
pvfecho can be called in the pipe mode:
    cat infile.pvf | pvfecho [optons] > outfile.pvf
    pvfecho [options] infile.pvf | <program> or with two file names:
    pvfecho [options] infile.pvf outfile.pvf Valid options are: -h brief help message -A <n> echo volume factor (default is 0.3) -D <n> delay in seconds (default is 0.15) -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) Normaly, the only options you will need are -A and -D.

EXAMPLES
To add the default echo to a pvf file:
    pvfecho infile.pvf outfile.pvf

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

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