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USER’S MANUAL
Appendix 6 – Special Operational Modes 326
ALGORITHM BIT RATE (kbps)
96 112 128 256 384
AAC Stereo 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
AAC Mono 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
48 kHz Not
Supported
AAC-LD Stereo 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
AAC-LD Mono 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
48 kHz Not
Supported
Layer 2 Stereo Not
Supported
32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
48 kHz
Layer 2 Mono 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
48 kHz Not
Supported
Layer 3 Stereo 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
Not
Supported
Layer 3 Mono 32 kHz
48 kHz
32 kHz
48 kHz
32 kHz
48 kHz
48 kHz Not
Supported
?
CURIOSITY NOTE!
The MPEG standards do not define all possible combinations of sample rate and bit rate at
284 kbps and 384 kbps for each of the algorithms.
Since Layer 3 is intended for low bits rates, they did not propose that it be used at 384 kbps.
Similarly, at the higher bit rates the absence of coding artifacts makes 48 kHz operation
possible without artifacts and hence the 32 kHz sample rates are not supported for mono.