NAME

       audio2tape — Sinclair ZX Spectrum audio to tape file converter

SYNOPSIS

       audio2tape [-t type] [-s] [-r] [-k] [-z level] [-c level] infile outfile

DESCRIPTION

       audio2tape converts audio files to ZX Spectrum tape images.

OPTIONS

       -t type
              causes  type  to  be  used as the level detection trigger. There are two triggers implemented; the
              simple trigger just uses a threshold value to convert to a one or zero on output, and the  schmitt
              trigger  implements  a  Schmitt trigger which outputs a less noisy signal, but requires a stronger
              signal to noise ratio than the simple trigger. The default trigger is “schmitt”.

       -s     causes the display of a frequency graph showing the sound levels present in the audio  file.  This
              can be useful when selecting good crossover points.

       -r     causes  any  ROM  blocks that are recognised to use idealised timing figures rather than the exact
              ones found in the audio file.

       -k     causes the tape file that is produced to keep any audio data from the  original  audio  file  that
              isn't  recognised.  This  will  allow  unsupported  loading  schemes,  encryption tones etc. to be
              preserved in the file that is produced.

       -z level
              causes level to be used as the zero point in the supplied audio file, it allows adjustment  for  a
              DC offset in the audio file. The default level is 127 from a range of 0–255.

       -c level
              causes  level  to  be used as the Schmitt trigger noise threshold, this reduces the sensitivity to
              noise in the provided file. The default level is 8 from a range of 0–127.

       -h, --help
              give brief usage help, listing available options.

       -V, --version
              output version information.

       infile specifies the audio file to be converted. This file can be in any of the sound  formats  supported
              by libaudiofile.

       outfile
              specifies  the output tape file. The format will be determined by the file extension and can be in
              any of the formats libspectrum(3) supports for output.

BUGS

       None known.

SEE ALSO

       fuse(1),   fuse-utils(1),   libspectrum(3),   listbasic(1),   tapeconv(1),    tzxlist(1),    snap2tzx(1),
       tape2pulses(1) tape2wav(1)

       The comp.sys.sinclair Spectrum FAQ, at
       http://www.worldofspectrum.org/faq/index.html.

AUTHOR

       Fredrick Meunier (fredm@spamcop.net).