User Guide

ADOBE PREMIERE PRO 2.0
User Guide
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Bandpass effect
The Bandpass effect removes frequencies that occur outside the specified range, or band of frequencies. This effect
is available for 5.1, stereo, or mono clips.
The Bandpass effect has the following options:
Center Specifies the frequency at the center of the specified range.
Q Specifies the width of the frequency band to preserve. Low settings create a wide range of frequencies, and high
settings create a narrow band of frequencies.
Bass effect
The Bass effect lets you increase or decrease lower frequencies (200 Hz and below). Boost specifies the number of
decibels by which to increase the lower frequencies. This effect is available for 5.1, stereo, or mono clips.
Channel Volume effect
The Channel Volume effect lets you independently control the volume of each channel in a stereo or 5.1 clip or track.
Each channel’s level is measured in decibels.
DeEsser effect
The DeEsser 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.
The DeEsser effect has the following settings:
Gain Specifies the amount of reduction applied to the “SSS” sound. The meter displays the amount of the reduction,
in decibels.
Male and Female 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 removes unwanted 50 Hz / 60 Hz hum from the audio. This effect is available for 5.1, stereo, or
mono clip. The DeHummer effect has the following settings:
Reduction Specifies the amount of reduction to apply to the hum. High values may also cut necessary audio infor-
mation in the low end.
Frequency 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.
Filter 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.