Difference between revisions of "Sound data structures"

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(alsa by Iavor Diatchki)
(Sox, Hommage, StorableVector)
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| WAVE
 
| WAVE
 
| <hask>[[Int32]]</hask>
 
| <hask>[[Int32]]</hask>
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|-
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| [[Sox]]
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| Lists, [[Storable Vector]], whatever you have a <hask>hPut</hask> and <hask>hGetContents</hask> function for.
 
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|-
 
|-
 
| [[Synthesizer|synthesizer]]
 
| [[Synthesizer|synthesizer]]
| <hask>[a], StorableVector.Lazy a, (StateT s Maybe a, s)</hask>
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| <hask>[a]</hask>, [[Storable Vector|StorableVector.Lazy a]], <hask>(StateT s Maybe a, s)</hask> (like [http://hackage.haskell.org/cgi-bin/hackage-scripts/package/stream-fusion stream-fusion])
 
|-
 
|-
 
| [[JACK|jack]]
 
| [[JACK|jack]]
 
| Operates via mapping functions<br /><hask>mainMono :: (CFloat -> IO CFloat) -> IO ()</hask><br /><hask>mainStereo :: ((CFloat, CFloat) -> IO (CFloat, CFloat)) -> IO ()</hask>
 
| Operates via mapping functions<br /><hask>mainMono :: (CFloat -> IO CFloat) -> IO ()</hask><br /><hask>mainStereo :: ((CFloat, CFloat) -> IO (CFloat, CFloat)) -> IO ()</hask>
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|-
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| [[Hommage]]
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| <hask>[a]</hask>
 
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Revision as of 21:13, 24 April 2009

At the request of Don Stuart, here is some information about the formats supported by different sound libraries.

In-memory data formats

In-memory sound formats are fairly diverse.

Reading and writing sound files

Library Sound file format
HCodecs (Audible a) => DiffUArray Int a
hsndfile MArray with Float and Double
HSoundFile [[Double]]
ALUT OpenAL.AL.Buffer
WAVE [[Int32]]
Sox Lists, Storable Vector, whatever you have a hPut and hGetContents function for.

Playing sounds

Library Sound file format
OpenAL Ptr UInt8, Ptr Int16, 1-N channels
SDL-mixer ForeignPtr ChunkStruct, ForeignPtr MusicStruct

Sound processing libraries

Library Sound file format
dsp Array a, [a]
synthesizer [a], StorableVector.Lazy a, (StateT s Maybe a, s) (like stream-fusion)
jack Operates via mapping functions
mainMono :: (CFloat -> IO CFloat) -> IO ()
mainStereo :: ((CFloat, CFloat) -> IO (CFloat, CFloat)) -> IO ()
Hommage [a]

MIDI-based

Library Sound file format
HCodecs Reads and writes MIDI files
midi Reads and writes MIDI files
alsa-midi Uses midi library
Haskore Uses midi library
alsa Custom midi and audio signal structures
YampaSynth Stand-alone program

Special-purpose APIs only (FFIs, etc.)

Library Sound file format
hCsound CsoundPtr
HasSound / Haskore OrcExp
hsc3 UGen

No public sound-buffer API

Library Sound file format
hbeat The relevant source files are missing!
hogg Very low-level API for Ogg internals only
libmpd No sound buffer API
sonic-visualizer No sound buffer API
truelevel Stand-alone program (uses WAVE)
wavconvert Stand-alone program