popping and clicking when recorded audio looped (cannot get delay settings correct)

It doesn't matter that the BPM's are set the same on each device, will ve variations, unless you mean that the MPC is synced to Logic's external MIDI clock... even then, MIDI clock is very coarse compared to audio clock.

Have you set the MPC sync to incoming MIDI clock, it doesn't do it automatically it has to be set via the MPC.

What happens if you let the bass drum recording run for 30 seconds and pull the looped section from midway in the recording?

First off... I attribute most of the odd timing issues Logic has to it's antiquated buffering system.

Things to check that can make a difference.

Make sure you're working with no plugins in Logic.

Oddly enough there are slight timing differences depending on the I/O buffer settings in Preferences/Audio try different ones, 64, 128, 256...etc.

Make sure Preferences/Audio "Recording Delay" is set to zero, if it is see...**

**If Recording Delay" was already set to zero set the "Delay Transmission" back to it's default and try using Recording Delay, both positive and negative numbers can be entered.

One other thing to try is let Logic play and the MPC lock up (without recording) then hit record after 15 seconds or so. This might produce a different result.

All said, I would cut the sample at bar 5 and do a quick fade to zero and see how the transition sounded.

AoyamaJPN wrote:

i am at my whits end...

Each time, I reset my delay settings to 0 and go from there. I did notice between setting 4 and 5 I could ALMOST get the bass kick sample to end in the right spot, but I can't use fractions, so I can't get it where I want. Not sure if this would help anyway.

Any other things I could try? Thanks so much! I hope I can figure this out!

MIDI timing in Logic, as it is in all MIDI/Audio sequencers... is taken from the audio clock. There is a chance the audio drivers are not reporting the correct position to Logic, if you had the right kind of cable you could test it by using the internal Mac audio and see if there was a difference. The "Recording Delay" slider is for adjusting drivers that don't report the correct position, if you're getting it close using between a 4 - 5 setting then that's as close as you're going to get it, the rest may be normal MIDI timing errors.

That said...

No matter how the Logic software (or any DAW) subdivides MIDI clock, to the hardware it's only 24 pulses per quarter note. Compare that resolution to an audio rate 44,100 samples per second. MIDI clock is not very accurate.

Hi, typing on tablet so this will be short. Make sure the beginning and end of the sample line up on the middle 0db line. the pop happens because the sample has signal at the loop point. Also, select the whole sample and remove any DC offset before editing.