Figure 2: Stereo codebooks (left) and memorization results (right)

Table 3: Stereophonic Text-to-Music generation. EnCodec processes separately the left and right
channels, giving us 8 codebooks instead of 4. We experiment with two codebook patterns, depicted
in Figure 2a. We also measure one of the stereo model after being downmixed to mono. We use a
1.5B MUSICGEN model conditioned only on text.

STEREO?
CB. PATTERN
Mono Delay
✗
Stereo Partial Delay
✗*
Stereo Partial Delay ✓
Stereo Delay
✓

MUSICCAPS Test Set
OVL. ↑
REL. ↑
80.61±1.22]
84.95±1.60
79.39±1.16
84.49±1.80
86.73±1.06
80.41±1.15
78.32 ±1.21
85.51±1.21

*: downmixed to mono after generation.
Simple and Controllable Music Generation