Measuring volume, Measuring the loudness of sequences – Grass Valley EDIUS Pro v.7.4 Reference Manual User Manual
Page 382
Chapter 9 Audio Operations — Volume/Pan Adjustment
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Alternative
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V-mute settings:
[Shift] + [V]
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After setting V-mute, drag a point on the volume rubber band left and right for fine adjustment of mute duration.
“Adjusting the Rubber Band” (w page 373)
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The default duration for V-mute can be changed from [Source] in [User Settings] → [Duration].
Measuring Volume
In digital broadcasts, volume adjustment based on “loudness” is required for the purpose of suppressing variance in the volume between
programs and broadcasting stations. Loudness is a numerically converted value of the sound level sensed by humans.
EDIUS can measure the size of noise compliant with the ITU-R BS.1770-2 and EBU R128 loudness standards.
Measuring the Loudness of Sequences
The loudness of the current sequence can be measured.
1)
Click [View] on the menu bar, and click [Loudness Meter].
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The [Loudness Meter] dialog box appears.
“[Loudness Meter] Dialog Box” (w page 383)
2)
Select [ITU-R BS.1770-2] or [EBU R128] from the list of loudness standards, and click [Settings].
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The [Loudness Meter Settings] dialog box appears.
“[Loudness Meter Settings] dialog box” (w page 384)
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You can also select the registered preset.
“[Loudness Meter]” (w page 79)
3)
In [Measurement Group 1] ([Measurement Group 2] if necessary), set where L/R/C/LS/RS channels
are to be remapped, and click [Settings].
4)
Move the timeline cursor to the position to start playback.
5)
Click [Play] in the [Loudness Meter] dialog box, and click [START] when measurement is started.
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The loudness measurement value is displayed as a chart or numerical value.
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To stop measurement during playback, click [Pause]. Clicking [Continue] resumes measurement. Click [RESET] to reset measurement.
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During measurement, volume in the part where exceeding the target level can be adjusted with the audio mixer.