4 Replies Latest reply: Apr 13, 2014 2:08 AM by GregBart
Atom Smasher Level 1 (5 points)

Q. is there a reason/fix for the increase in latency in lion when using the original Apogee Duet soundcard in Lion 10.7.3 through Logic Pro?


Buffer size 128 is no longer usuable - artifacts, pops, crackles (usual buffering problem symptoms), 128 was usuable with Leopard.

10.7.3 has been quite shaky all round ..........


Rig: MBP 2.33 C2D 3Gb 256Vram, Mac OS X (10.7.3), Logic Pro 9.15 (64 Bit), Automap 4 - push the machine...........


Here's the figures :


I/O buffer size = 256


Resulting Latency round trip 16ms


Tip: Click on the acutual words reading the statement above in the audio/preferences pane and it changes!

now reads:


Resulting Output Latency 8ms


TIP: the yellow tool tips (OS X) when hovering inform you the speaker distance conversion - pretty cool


Although very handy info,


I've gained 2ms at least from SL - just enough for a guitarist tracking, while using onborard plugins, to be distracted in close overdub sessions (unusable)


Using 44.1KHz sample rate to avoid dithering and extra process.................I know...........


I hope I've missed a setting or setup procedure, if anyone else could post their figures/advice,

it would be appreciated.

MBP 2.33 C2D 3Gb 256Vram, Mac OS X (10.7.1), Logic , Apogee Duet, Novation SL61