No.
If using HLE does not produce audio that is obviously playing too slow, it means the game uses 32kHz audio. This is by far the most common situation, there are only about 5 titles that use 48kHz audio. Switching to LLE will not magically upscale the native rate used by the game.
If using HLE does not produce audio that is obviously playing too slow, it means the game uses 32kHz audio. This is by far the most common situation, there are only about 5 titles that use 48kHz audio. Switching to LLE will not magically upscale the native rate used by the game.