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