161 lines
3.2 KiB
Groff
161 lines
3.2 KiB
Groff
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.Dd November 2, 2014
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.Dt SNDFILE-CONVERT 1
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.Os
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.Sh NAME
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.Nm sndfile-convert
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.Nd convert sound files from one format to another
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.Sh SYNOPSIS
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.Nm sndfile-convert
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.Op Fl override-sample-rate Ns = Ns Ar rate
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.Op Fl endian Ns = Ns Cm little | big | cpu
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.Op Fl normalize
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.Op Ar encoding
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.Ar input
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.Ar output
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.Sh DESCRIPTION
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.Nm
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converts sound files from one audio format to another.
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The output file is overwritten it it already exists.
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.Ss Formats
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The format of the output file is determined by the filename extension.
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The following file formats are currently recognized:
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.Pp
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.Bl -tag -compact -width ircam
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.It wav
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WAV (Microsoft)
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.It aif
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AIFF (Apple/SGI)
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.It au
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AU (Sun/NeXT)
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.It snd
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AU (Sun/NeXT)
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.It raw
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RAW (header-less)
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.It gsm
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RAW (header-less)
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.It vox
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RAW (header-less)
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.It paf
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PAF (Ensoniq PARIS, big-endian)
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.It fap
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PAF (Ensoniq PARIS, little-endian)
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.It svx
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IFF (Amiga IFF/SVX8/SV16)
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.It nist
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SPHERE (NIST SPeech HEader Resources)
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.It sph
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SPHERE (NIST SPeech HEader Resources)
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.It voc
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VOC (Creative Labs)
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.It ircam
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SF (Berkeley/IRCAM/CARL)
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.It sf
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SF (Berkeley/IRCAM/CARL)
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.It w64
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W64 (SoundFoundry WAVE 64)
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.It mat
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MAT4 (GNU Octave 2.0 / Matlab 4.2)
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.It mat4
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MAT4 (GNU Octave 2.0 / Matlab 4.2)
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.It mat5
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MAT5 (GNU Octave 2.1 / Matlab 5.0)
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.It pvf
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PVF (Portable Voice Format)
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.It xi
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XI (FastTracker 2)
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.It htk
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HTK (HMM Tool Kit)
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.It sds
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SDS (Midi Sample Dump Standard)
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.It avr
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AVR (Audio Visual Research)
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.It wavex
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WAVEX (MS WAVE with WAVEFORMATEX)
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.It sd2
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SD2 (Sound Designer II)
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.It flac
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FLAC (FLAC Lossless Audio Codec)
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.It caf
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CAF (Apple Core Audio File)
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.It wve
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WVE (Psion Series 3)
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.It prc
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WVE (Psion Series 3)
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.It ogg
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OGG (OGG Container format)
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.It oga
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OGG (OGG Container format)
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.It mpc
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MPC (Akai MPC 2k)
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.It rf64
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RF64 (RIFF 64)
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.El
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.Ss Options
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The following options are recoginzed:
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.Pp
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.Bl -tag -compact -width "override-sample-rate=XXXXX"
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.It Fl override-sample-rate Ns = Ns Ar rate
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Make the input use sample rate of
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.Ar rate
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Hz.
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.It Fl endian Ns = Ns Cm little
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Make the output file use little endian data.
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.It Fl endian Ns = Ns Cm big
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Make the output file use big endian data.
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.It Fl endian Ns = Ns Cm cpu
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Make the output file use CPU endianness.
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.It Fl normalize
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Normalize the audio data in the output file.
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.El
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.Ss Encodings
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The optional
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.Ar encoding
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parameter allows setting of the data encoding for the output file.
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The following encodings are currently supported:
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.Pp
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.Bl -tag -compact -width ima-adpcmXX
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.It Fl pcms8
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signed 8 bit pcm
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.It Fl pcmu8
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unsigned 8 bit pcm
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.It Fl pcm16
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16 bit pcm
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.It Fl pcm24
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24 bit pcm
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.It Fl pcm32
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32 bit pcm
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.It Fl float32
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32 bit floating point
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.It Fl ulaw
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ULAW
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.It Fl alaw
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ALAW
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.It Fl ima-adpcm
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IMA ADPCM (WAV only)
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.It Fl ms-adpcm
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MS ADPCM (WAV only)
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.It Fl gsm610
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GSM6.10 (WAV only)
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.It Fl dwvw12
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12 bit DWVW (AIFF only)
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.It Fl dwvw16
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16 bit DWVW (AIFF only)
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.It Fl dwvw24
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24 bit DWVW (AIFF only)
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.It Fl vorbis
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Vorbis (OGG only)
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.El
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.Pp
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If no encoding is specified for the output file,
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.Nm
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will try to use the encoding of the input file.
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This will not always work as most container formats
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(e.g. WAV, AIFF etc) only support a small subset of encodings
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(e.g. 16 bit PCM, a-law, Vorbis etc).
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.Sh EXIT STATUS
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.Ex -std
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.Sh SEE ALSO
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.Lk http://libsndfile.github.io/libsndfile/
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.Sh AUTHORS
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.An Erik de Castro Lopo Aq Mt erikd@mega-nerd.com .
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