[LAD] How do I write meta data into a wave file? (Command line tools?)

Federico Lopez fede2001 at hotmail.com
Sat May 4 14:34:01 UTC 2013


On 05/03/2013 08:01 PM, Nils Gey wrote:
> Hello list,
>
> libsndfile-info shows various useful information like the one at the end of this mail.
> I have Sonatina Symphonic Orchestra waves here (violins 1) and a one note wave includes "Midi Note", "Loop Count" and "Cue Start : 92078  End : 223977", which is the actual loop start/end
>
> Is this custom data or does it follow a standard?
> And no matter what, how do I write that into my own wave files?

May be offtopic ..  you can insert any obscure poetry or any 
non-stardard text  in a wav file via steganography.

http://steghide.sourceforge.net/documentation.php








>
> I would prefer command line tools. But programming interfaces are fine as well.
>
> Greetings,
> Nils
>
> $ sndfile-info test.wav
>
> Version : libsndfile-1.0.25
>
> ========================================
> File : test.wav
> Length : 896548
> RIFF : 896540
> WAVE
> fmt  : 16
>    Format        : 0x1 => WAVE_FORMAT_PCM
>    Channels      : 2
>    Sample Rate   : 44100
>    Block Align   : 4
>    Bit Width     : 16
>    Bytes/sec     : 176400
> data : 895916
> *** SAUR : 512 (unknown marker)
> smpl : 60
>    Manufacturer : 0
>    Product      : 0
>    Period       : 22675 nsec
>    Midi Note    : 76
>    Pitch Fract. : 0
>    SMPTE Format : 0
>    SMPTE Offset : 00:00:00 00
>    Loop Count   : 1
>      Cue ID :  0  Type :  0  Start : 92078  End : 223977  Fraction :     0  Count :     0
>    Sampler Data : 0
> End
>
> ----------------------------------------
> Sample Rate : 44100
> Frames      : 223979
> Channels    : 2
> Format      : 0x00010002
> Sections    : 1
> Seekable    : TRUE
> Duration    : 00:00:05.079
> Signal Max  : 31468 (-0.35 dB)
>
>
>
>
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