EmbDev.net

Forum: µC & Digital Electronics Helix AAC decoder


von jrmymllr j. (jrmymllr)


Rate this post
useful
not useful
This is a long shot, but has anyone used the Helix AAC decoder?  I do 
and it works great, but I'm annoyed that it hardcodes zero as the 
reported bitrate.  Has anyone figured this out?  I haven't even had any 
luck figuring out how to extract the bitrate from an AAC stream.

von Andreas S. (andreas) (Admin)


Rate this post
useful
not useful
I have used it, see http://embdev.net/articles/ARM_MP3/AAC_Player.

I'm afraid I can't really you with your question, but I'll try. I think 
that in MP3, the bitrate is directly coded in the frame header, and 
that's where Helix gets it from. In AAC, there is no such field in the 
header, at least not for all stream formats; you might have to calculate 
it from the frame size yourself.

Please log in before posting. Registration is free and takes only a minute.
Existing account
Do you have a Google/GoogleMail account? No registration required!
Log in with Google account
No account? Register here.