Adobe Premiere Pro CC v.7.xx - Manual (Page 506)

Threshold
Reduction
Efficiency meter
Audition
Gain
Male and Female
Reduction
Frequency
Filter
Delay
Feedback
Mix
Determines the detection level for the crackles. This control ranges from 0 to 100%.
Determines the amount by which the crackles will be reduced. This control ranges from 0 to 100%.
This meter indicates the efficiency of the DeCrackler. The Threshold dial should be tweaked to get the maximum value. Please
be aware that the maximum will also be reached when the threshold is very low, but at this point the fundamental audio signal will be harmed.
When selected, this control lets you hear only the sounds that will be removed. When the actual contents of the audio can be heard in
audition mode, this is a strong indication that the threshold is set too low. If the threshold is left unadjusted the audio signal will be harmed.
DeEsser effect
The DeEsser effect removes sibilance and other high frequency “SSS”-type sounds, which are often created when a narrator or vocalist
pronounces the letters “s” and “t.” This effect is available for 5.1, stereo, or mono clip.
Specifies the amount of reduction applied to the “SSS” sound. The meter displays the amount of the reduction, in decibels.
Specifies the gender of the narrator or vocalist. This option helps the effect to adapt to the difference in tone between genders.
DeHummer effect
The DeHummer effect removes unwanted 50 Hz / 60-Hz hum from the audio. This effect is available for 5.1, stereo, or mono clip.
Specifies the amount of reduction to apply to the hum. High values may also cut necessary audio information in the low end.
Specifies the center frequency of the hum. Usually this will be 50 Hz in Europe and Japan, and 60 in the US and Canada. Often the
frequency of the hum is not static, but will vary by +/– 5 Hz. Click the 50 Hz or 60 Hz buttons to set the respective frequency.
Specifies the number of filters to use to remove the hum. Hum is comprised not only of the fundamental frequencies of 50 or 60 Hz, but
also contain harmonics with frequencies that are multiples of the fundamental (100/110 Hz, 150/160 Hz, and such). Higher values cause greater
CPU usage. Adjusting this value determines the number of harmonic frequencies to filter. For example, if you choose 60 Hz as the Frequency
value, and choose 4# as the Filter value, the DeHummer filters the 60 Hz frequency along with three harmonic frequencies (120 Hz, 240 Hz, and
480 Hz), for a total of four frequencies filtered, hence the value of 4#. Higher values require more processing power.
Delay effect
The Delay effect adds an echo of the audio clip’s sound that plays after a specified amount of time. This effect is available for 5.1, stereo, or mono
clip.
Specifies the amount of time before the echo plays. The maximum is 2 seconds.
Specifies a percentage of the delayed signal to be added back into the delay to create multiple decaying echoes.
Controls the amount of echo.
DeNoiser effect
The DeNoiser effect automatically detects tape noise and removes it. Use this effect to remove noise from analog recordings, such as magnetic
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