1audio2tape(1)                      Emulators                     audio2tape(1)
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NAME

6       audio2tape — Sinclair ZX Spectrum audio to tape file converter
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SYNOPSIS

9       audio2tape  [-t  type] [-s] [-r] [-k] [-z level] [-c level] infile out‐
10       file
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DESCRIPTION

13       audio2tape converts audio files to ZX Spectrum tape images.
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OPTIONS

16       -t type
17              causes type to be used as the level detection trigger. There are
18              two triggers implemented; the simple trigger just uses a thresh‐
19              old value to convert to a one or zero on output, and the schmitt
20              trigger  implements a Schmitt trigger which outputs a less noisy
21              signal, but requires a stronger signal to noise ratio  than  the
22              simple trigger. The default trigger is “schmitt”.
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24       -s     causes the display of a frequency graph showing the sound levels
25              present in the audio file. This can  be  useful  when  selecting
26              good crossover points.
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28       -r     causes  any ROM blocks that are recognised to use idealised tim‐
29              ing figures rather than the exact ones found in the audio file.
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31       -k     causes the tape file that is produced to  keep  any  audio  data
32              from  the  original  audio file that isn't recognised. This will
33              allow unsupported loading schemes, encryption tones etc.  to  be
34              preserved in the file that is produced.
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36       -z level
37              causes  level to be used as the zero point in the supplied audio
38              file, it allows adjustment for a DC offset in  the  audio  file.
39              The default level is 127 from a range of 0–255.
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41       -c level
42              causes  level to be used as the Schmitt trigger noise threshold,
43              this reduces the sensitivity to noise in the provided file.  The
44              default level is 8 from a range of 0–127.
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46       -h, --help
47              give brief usage help, listing available options.
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49       -V, --version
50              output version information.
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52       infile specifies  the  audio  file to be converted. This file can be in
53              any of the sound formats supported by libaudiofile.
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55       outfile
56              specifies the output tape file. The format will be determined by
57              the  file  extension  and  can be in any of the formats libspec‐
58              trum(3) supports for output.
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BUGS

61       None known.
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SEE ALSO

64       fuse(1),  fuse-utils(1),  libspectrum(3),  listbasic(1),   tapeconv(1),
65       tzxlist(1), snap2tzx(1), tape2pulses(1) tape2wav(1)
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67       The comp.sys.sinclair Spectrum FAQ, at
68       http://www.worldofspectrum.org/faq/index.html.
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AUTHOR

71       Fredrick Meunier (fredm@spamcop.net).
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75Version 1.4.2                   3rd June, 2018                   audio2tape(1)
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