LabVIEW
How to generate .wav files from sound pressure data
Hello Gurdas,
1+2) It depends on the player you use. If the player is displaying those data you can use this chunk. And the player will probably display the text each time it plays the wav.
3) How to write: Have a look at an wav file with a hex viewer/editor. So you easily can recognize the pattern: You have a type identifier ("chunk label"), followed by the size of the chunk (intel format, U32), followed by chunk data. To append a chunk: open wav file, append new chunk data to file, readjust file size.
Filesize is stored in byte 4-7 of a wave file, following the identifier RIFF (also Intel format; contains "data to follow" that is actual filesize-8 (RIFFxxxx)).
A wav file contains of:
RIFF - indentifier
xxxx - filesize-8
while (chunks)
chunk type - identifier (like data, fact, labl)
chunk size - size in bytes
chunk data - data bytes
wend
That's what I mean easy to implement 🙂
1+2) It depends on the player you use. If the player is displaying those data you can use this chunk. And the player will probably display the text each time it plays the wav.
3) How to write: Have a look at an wav file with a hex viewer/editor. So you easily can recognize the pattern: You have a type identifier ("chunk label"), followed by the size of the chunk (intel format, U32), followed by chunk data. To append a chunk: open wav file, append new chunk data to file, readjust file size.
Filesize is stored in byte 4-7 of a wave file, following the identifier RIFF (also Intel format; contains "data to follow" that is actual filesize-8 (RIFFxxxx)).
A wav file contains of:
RIFF - indentifier
xxxx - filesize-8
while (chunks)
chunk type - identifier (like data, fact, labl)
chunk size - size in bytes
chunk data - data bytes
wend
That's what I mean easy to implement 🙂
