Metric Halo 3d Upgrade Board Set, Руководство пользователя

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Glossary
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Dry An uneffected audio signal. If you were to record a signal before and after
running it through a reverb, the pre-reverb signal would be dry and the
post-reverb signal would be wet. Many processors have controls to let you
set the wet/dry ratio.
DSP Digital Signal Processing. This can mean:
• A physical integrated circuit that processes audio- “All Metric Halo
3d interfaces have DSP chips.”
• The program that makes a DSP chip do useful things, usually re-
ferred to as plug-ins- “The MIOStrip DSP plug-in gives me gating,
compression and EQ right in the interface!”
F
Fader A form of level control; inputs in the Mixer have faders that set the level
at which they send audio to buses, and buses have faders that set their
output level.
fs Stands for sampling rate. For example, fs=44.1k means that the sample
rate is 44,100 samples per second.
G
Gain The measure of a device’s ability to increase the level of an audio signal.
In audio, gain is usually referred to in dB; for example, the mic preamps in
the ULN-8 have 92.5 dB of gain. This means that they can take an incoming
signal and increase its level by 92.5 dB.
Graph A free-form area for creating signal processors. Inputs are on the left and
outputs are on the right. DSP building blocks are placed in the Graph and
connected by dragging virtual wires between the inputs and outputs of
the blocks and the Graph itself. Graphs can be saved for repeated use.
More in-depth information is available in the Graphs section of the DSP
Implementation Guide .
Group See Stem
H
Head amp Head Amplifier - another term for microphone preamplifier.
Headroom The amount that an audio signal can go above a nominal point before
distortion. The maximum level in a digital system is 0 dBFS, so if we say the
nominal point is -18 dB, the system has 18 dB of headroom. Exceeding
the headroom in a system or device will cause distortion.
I
Impedance The opposition of a circuit to alternating current. In audio, it is important
to match the impedance characteristics of inputs and outputs: