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why is there a delay between a live instrument note and its sound?

Half (but not all!) the time when I record with a live instrument (through macbook built-in mic), there is a delay between the plucking of the note and the sound in the headphones. Any ideas how to remedy this? Thanks, David

MacBook Pro, OS X Yosemite (10.10.1)

Posted on Jan 4, 2015 2:41 PM

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1 reply

Jun 2, 2015 4:34 PM in response to DavidPear987

Could be the overall combined effect of slowness, may be due to the rate data is

written & read from the hard disk drive; as the file may be saved before you hear it.


The computer configuration of memory installed (RAM total) and the data rate or

speed the storage drive (hard disk or solid state drive) plus unused capacities of

each of these, in addition to the hardware settings or limitations, can add to this.


Without knowing what else the computer is trying to do at the same time, and how

the machine is configured, the answer would be more difficult to determine. Some

computers are adequate combinations of hardware and software. And any upgrade

to one should involve a study of the effect on the other. Newer OS X will usually ask

for more RAM and more storage capacity. Faster is better, since swap files or virtual

memory, temporary caches and the like, require these extra resources for the OS X

to draw upon, automatically. The memory management is rather good in later OS X

but generally these systems use more of it, and are larger than some older ones.


So there isn't a simple answer, other than consider the lag is due to everything that

isn't faster than the speed of sound. Though electricity can be nearly light-speed,

that isn't to be expected when there are slower more mechanical processes at work.


Perhaps someone with more information about your computer build model and

resources, plus OS X version details could venture an educated guess...


That leaves me out! LOL 🙂

why is there a delay between a live instrument note and its sound?

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