MACKIE Pro Audio Lab - Manual (Page 21)

User’s Guide
Slate Tone Generator
The Slate Tone Generator
The familiar three-step oscillated tone sequences (like we used to hear at the be-
ginning of cassette albums), are known as Slate Tones. They are used to calibrate
faders, buses, and meters between consoles and decks to insure that all input and
output levels are set to a single reference point. Our Slate Tone Generator is de-
signed to give you highly fl exible signals to help you optimize routing in your system.
Level
Use your mouse to select an output level ranging from off to 0 dB RMS of a full-scale
sine wave. The reference level is based on 0 dB RMS output values generated by the
noise generator.
Tone Duration
Tone duration refers to the amount of tone vs. pause (no sound). These tones have
adjustable durations that can be customized to suit your needs. Adjust the duration
by grabbing the tone/ pause bar with your mouse.
Burst/Pause Ratio
The Burst/Pause Ratio refers to the percentage of burst compared to pause that is
applied to the generated noise. This pause interval can be assigned to any increment
between 0 seconds (off) and 100 seconds (full). To adjust the ratio, use your mouse
to select the up/down arrows, or scroll the numbers in the small window, or grab the
blue bar graphic and move it left or right.
Total Time (tone sequence)
Total Time refers to the combined length of tone and pause. Pause can be assigned
to any interval between 0 seconds (off) and 60 seconds. Use the mouse to select total
time using the up or down arrows or to scroll the digits.
Tone Select
This lets you choose the frequency of each tone from 16 Hz to 20.0 kHz. Choose
from standard three-tone oscillator sequences that are generally accepted as indus-
try standards, or customize your own. You can enable or disable individual tones by
pressing the IN buttons to bring them in or out of play.
Start
Left-click to start the tone generator, click again to stop. Right-click to play a mo-
mentary tone burst for as long as you hold down the button.
Level
Tone Select
Start Total Time Burst/Pause
Ratio