Editing WAV file metadata with LV?

[george seifert]

Has anyone used LV to access the meta data in a WAV file? I've searched the archives here and at NI and came up emtpy. Specifically I need to edit the Genre data. Another group here has written some software (not in LV - shame on them) to process WAV files. They use the Genre data for some reason to pass data into their program.

George

[hooovahh]

I'm not familiar with what kind of meta data that is stored in a wave, but if it is ID3 there is some code which reads v1 of that from MP3 files.

http://forums.lavag.org/CR-MP3-ID3v1-Tag-I-O-t7094.html

There are some command line program which reads ID3, here's one I've never used but claims to do read/write. You could always use LabVIEW to read a command line.

EDIT: Apparently ID3 is a MP3 standard only.

[Antoine Chalons]

QUOTE (george seifert @ Jun 9 2009, 04:11 PM)

Has anyone used LV to access the meta data in a WAV file? I've searched the archives here and at NI and came up emtpy. Specifically I need to edit the Genre data. Another group here has written some software (not in LV - shame on them) to process WAV files. They use the Genre data for some reason to pass data into their program.

George

Hello,

As you can see http://www.sonicspot.com/guide/wavefiles.html' rel='nofollow' target="_blank">here there can be different variation on the WAV format, you need to find the description of the format in which your files were written to.

Then make a VI that reads the file byte per byte and decode "headers" by groups of byte.

I did that a while ago for BMP files, you can use it as a starting point, hope it can help.

NOTE : that would be nice to post it the LAVA cr :-o

[george seifert]

QUOTE (Antoine Châlons @ Jun 9 2009, 09:53 AM)

Hello,

As you can see http://www.sonicspot.com/guide/wavefiles.html' rel='nofollow' target="_blank">here there can be different variation on the WAV format, you need to find the description of the format in which your files were written to.

Then make a VI that reads the file byte per byte and decode "headers" by groups of byte.

NOTE : that would be nice to post it the LAVA cr :-o

Thanks. That's a start. Unfortunately I haven't been able to find anything on the net that describes where the Genre metadata is supposed to be in the file.

George