Hi all,
I'm using Logic Pro 9 to record podcast audio. I'm recording on my MacBook Pro (retina, late 2013) via Firewire from a Mackie Onyx 1220i. My Mac doesn't have a Firewire plug, so I've got the Firewire to Thunderbolt adapter.
On two separate occasions, I've seen static, buzzes, crackles or pops come through in my recorded tracks. This has NOT occurred consistently... just in two cases. In the first instance, it was quite severe, and for about a 15-minute period, one of my three tracks was completely unusable. At the time, I attributed this to a bad power strip and went out and bought a power conditioner. However, as of my last recording session, it happened again. It was not nearly as severe, but it was consistent for the full duration of my recording. Here's a sample of the static I was getting (about 1 second in):
[soundcloud]https://soundcloud.com/tyhildenbrandt/static[/soundcloud]
This most recent case was minor by comparison, but still annoying. In doing some research on this, I believe the issue might be related to my I/O Buffer size. I had been previously recording with a buffer of 32; would bumping this up to 512 or 1024 fix the problem? I'm not doing any live monitoring of my audio through Logic, so latency isn't a huge deal for me (assuming my understanding of audio latency is correct).
My only other thought is that this might have something to do with the Firewire-to-Thunderbolt adapter, but I'm not even sure how to check for that.
Any help is greatly appreciated. Thanks!