Audient iD4 User Manual

22
This next section will give some insight on
how to get the most out of iD4, and some of
the dierent settings and options you have
available to you when using it.
Sample Rate
When starting a new project, it is important to
consider the sample rate you are using. The
sample rate dicates how many times a second
the level of the incoming audio is measured
(sampled), which allows continuous analogue
audio to be represented digitally as a series
of 0s and 1s.
44.1kHz is the standard sample rate for all CDs
and most downloadable music, while 48kHz
is the standard for people working with film.
Higher sample rates can have their benefits
but it is worth noting that as you increase the
sample rate, you increase the file size of the
audio and CPU resources required.
Buer Size and Latency
Buer size is a very important setting that
will ensure that your projects are running
smoothly and eciently. A wrongly selected
buer size can result in hearing pops, clicks
and stuttering audio. Buer size dictates how
many “samples” of audio are stored before
being sent to the output.
A buer adds a delay to the signal (known as
latency), however it is essential for giving the
computer some time to do other processing.
If you are monitoring iD4’s inputs directly using
the Monitor Mix knob, you can keep the buer
size relatively high to reduce the strain on
your computer. If you are wanting to monitor
through your DAW with eects, for example
being able to hear your electric guitar with an
amp simulator on it, you will want the lowest
buer size your computer can handle. The
buer size you can get down to before you
get audio issues is hugely dependant on your
computer power, as well as the processing
requirements of your session. Some DAWs
allow you to “Freeze” tracks which reduces
the CPU load, allowing you to choose lower
buer sizes.
For mixing, you can set the buer size much
higher, to allow your computer to process the
audio in time. Increasing the latency does
not really matter in this situation because you
aren’t trying to do anything live. For larger
sessions, you might find that you need a
larger buer size than normal.
You may need to adjust buer sizes when
working at dierent sample rates to account
for the dierence in CPU requirements of
dierent sample rates.

Audient iD4 Specifications

General

Type	Audio Interface
Mic Preamps	1
Connectivity	USB
A/D Resolution	24-bit/96kHz
Bus Powered	Yes
Direct Monitoring	Yes
Headphone Output	1 x 1/4"
USB	USB 2.0
Computer Connectivity	USB
Analog Outputs	2 x 1/4" (main out)
Phantom Power	+48V (switchable)
Simultaneous I/O	2 in / 2 out
OS Compatibility	Windows, macOS
Driver	ASIO, Core Audio
Weight	0.88 lbs (400 g)