Audient iD4, Руководство пользователя

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18
GENERAL OPERATION
This next section will give some insight on
how to get the most out of iD4, and some of
the different 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.
Buffer Size and Latency
Buffer size is a very important setting that
will ensure that your projects are running
smoothly and efficiently. A wrongly selected
buffer size can result in hearing pops, clicks
and stuttering audio. Buffer size dictates how
many “samples” of audio are stored before
being sent to the output.
A buffer 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 buffer size relatively high to reduce the
strain on your computer. If you are wanting
to monitor through your DAW with effects,
for example being able to hear your electric
guitar with an amp simulator on it, you will
want the lowest buffer size your computer
can handle. The buffer 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 chose lower buffer sizes.
For mixing, you can set the buffer 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 buffer size that normal.
You may need to adjust buffer sizes when
working at different sample rates to account
for the difference in CPU requirements of
different sample rates.