Table 1 Codecs under test.
From: An Overview of the Coding Standard MPEG-4 Audio Amendments 1 and 2: HE-AAC, SSC, and HE-AAC v2
Coding scheme | Label | Bit rate | Sampling rate | Typical audio bandwidth |
|---|---|---|---|---|
(mono/stereo) | (kHz) | (kHz) | ||
MPEG-4 AAC profile | AAC 48/60 kbps | 48/60 kbps | 32 | 10/13.5 |
MPEG-4 HE-AAC | HE-AAC 32/48 kbps | 32/48 kbps | 24/48 | 15.5 |
Anchors and reference | Hidden reference | 16-bit PCM stereo | 48 | 24 |
Anchors and reference | Anchor 3.5 kHz | 16-bit PCM stereo | 48 | 3.5 |
Anchors and reference | Anchor 7 kHz | 16-bit PCM stereo | 48 | 7.0 |