Metric Halo SpectraFoo - Manual (Page 24)

Instruments
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Figure 3.7: Level Meter Options Window
2. Check Use PPM Ballistics. The meter will now use the standard PPM decay time. You can change the
decay time using the PPM Settling Time slider.
Meter scales
SpectraFoo now has a variety of User Selectable scale calibrations. In addition to the equally spaced level
calibration (aptly called the SpectraFoo Calibration), you can choose from the following international PPM
and VU standards:
1. UK PPM – UK Standard 1-7 Scale. Line-up calibration is 0 dBu for marking “4”.
2. EBU PPM – EBU Standard PPM Scale. Line-up calibration is 0 dBu at marking “Test”.
3. IEEE PPM – IEEE Standard PPM Scale. Line-up calibration is 0 dBu at marking “Test”.
4. IEEE VU – IEEE Standard VU Scale. Line-up calibration is +4 dBu at marking “0”.
5. DIN PPM – DIN Standard PPM Scale. Line-up calibration is +6 dBu at marking “0”.
6. Nordic PPM – Nordic Standard PPM Scale. Line-up calibration is +6 dBu at marking “Test”.
7. Digital PPM – Digital PPM Scale. Line-up calibration is 0 dBFS at marking “0”.
8. SpectraFoo – dBu calibrated scale with even spacing of calibration marks.
The PPM crawlback ballistics in the meters conform to a crawlback rate of 20 dB in 1.7 seconds. Fast PPM
can be accomplished by setting the PPM settling time to 0.85 seconds.
User selectable meter bar colors
SpectraFoo has two different ways of color-coding its meters. The first method, which corresponds to the
original SpectraFoo color scheme, provides one color for peak-level and another for RMS level. The second
method, called level-based color, changes the color of the meter bar based on the level of the audio. You can
change the colors in both of the color-coding methods from within the Level Meters Options window.
To change the Peak and RMS and VU colors for a meter:
1. If the Meter’s Control window is not visible, show the Control window by clicking the Show Controls
button, and then selecting the “Options” button at the bottom of the Controls window.
2. Click the appropriate color tile within the Controls Window. The Macintosh Color Picker dialog will
appear.
3. Select the new color in the dialog.
4. The Peak, RMS, and VU colors are used for the Peak, RMS, and VU holds respectively. If Use Level Based
Color is unchecked the Peak and RMS colors are used for the Peak and RMS meter bars, respectively.