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135 lines
3.8 KiB
Groff
135 lines
3.8 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" audio2tape.1: audio2tape man page
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.\" Copyright (c) 2007-2008 Fredrick Meunier
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.\"
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.\" This program is free software; you can redistribute it and/or modify
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.\" it under the terms of the GNU General Public License as published by
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.\" the Free Software Foundation; either version 2 of the License, or
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.\" (at your option) any later version.
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.\"
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.\" This program is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public License along
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.\" with this program; if not, write to the Free Software Foundation, Inc.,
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.\" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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.\"
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.\" Author contact information:
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.\"
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.\" E-mail: fredm@spamcop.net
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.\"
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.\"
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.TH audio2tape 1 "21st August, 2016" "Version 1.2.2" "Emulators"
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH NAME
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audio2tape \(em Sinclair ZX Spectrum audio to tape file converter
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH SYNOPSIS
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.B audio2tape
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.RI "[\-t " type ]
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[\-s]
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[\-r]
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[\-k]
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.RI "[\-z " level ]
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.RI "[\-c " level ]
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.I infile outfile
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH DESCRIPTION
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audio2tape converts audio files to ZX Spectrum tape images.
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH OPTIONS
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.TP
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.RI "\-t " type
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causes
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.I type
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to be used as the level detection trigger. There are two triggers implemented;
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the
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.I simple
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trigger just uses a threshold value to convert to a one or zero on output, and
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the
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.I schmitt
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trigger implements a Schmitt trigger which outputs a less noisy signal, but
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requires a stronger signal to noise ratio than the simple trigger. The default
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trigger is \(lqschmitt\(rq.
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.TP
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\-s
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causes the display of a frequency graph showing the sound levels present in the
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audio file. This can be useful when selecting good crossover points.
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.TP
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\-r
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causes any ROM blocks that are recognised to use idealised timing figures
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rather than the exact ones found in the audio file.
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.TP
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\-k
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causes the tape file that is produced to keep any audio data from the original
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audio file that isn't recognised. This will allow unsupported loading schemes,
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encryption tones etc. to be preserved in the file that is produced.
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.TP
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.RI "\-z " level
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causes
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.I level
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to be used as the zero point in the supplied audio file, it allows adjustment
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for a DC offset in the audio file. The default level is 127 from a range of
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0\(en255.
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.TP
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.RI "\-c " level
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causes
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.I level
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to be used as the Schmitt trigger noise threshold, this reduces the sensitivity
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to noise in the provided file. The default level is 8 from a range of 0\(en127.
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.TP
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\-h, \-\-help
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give brief usage help, listing available options.
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.TP
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\-V, \-\-version
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output version information.
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.TP
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.I infile
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specifies the audio file to be converted. This file can be in any of the
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sound formats supported by
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.IR libaudiofile .
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.TP
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.I outfile
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specifies the output tape file. The format will be determined by the
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file extension and can be in any of the formats
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.IR libspectrum "(3)"
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supports for output.
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH BUGS
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None known.
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH SEE ALSO
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.IR fuse "(1),"
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.IR fuse\-utils "(1),"
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.IR libspectrum "(3),"
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.IR listbasic "(1),"
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.IR tapeconv "(1),"
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.IR tzxlist "(1),"
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.IR snap2tzx "(1),"
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.IR tape2pulses "(1)"
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.IR tape2wav "(1)"
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.PP
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The comp.sys.sinclair Spectrum FAQ, at
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.br
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.IR "http://www.worldofspectrum.org/faq/index.html" .
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.\"
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.\"------------------------------------------------------------------
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.\"
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.SH AUTHOR
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Fredrick Meunier (fredm@spamcop.net).
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