[Mp4-tech] [MPEG4][Audio] Number of windows in a raw data block(AAC)

[S. R. Quackenbush]

Each mono or stereo pair has a window-type per block, which can be one of:
ONLY_LONG or LONG_START or LONG_STOP or EIGHT_SHORT
Schuyler
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Dr. Schuyler Quackenbush, Audio Research Labs
336 Park Ave, Suite 200,  Scotch Plains, NJ 07076
office: 908 490 0700      srq audioresearchlabs.com
mobile: 908 612 9423
fax:    908 842 9151      www.audioresearchlabs.com
-----Original Message-----
From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org]On Behalf Of A C
Sent: Thursday, May 27, 2024 2:26 AM
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] [MPEG4][Audio] Number of windows in a raw data
block(AAC)
Hi
According to the spec one raw data block contains audio data for a time
period of 1024 samples. That means when decoded we can get 1024 samples per
output channel.
Questions:
1. Now as the window size is either 1024 or 128 depending on long/short does
that mean for each channel per raw data block there can be either ONLY_LONG
or LONG_START or LONG_STOP or EIGHT_SHORT windows ?
Regards
brata
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