Creative 70EM896106000 Owners Manual - Page 79

Stereo Reverb

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Stereo Reverb Reverberation is a simulation of a natural space such as a room or hall. The stereo reverb algorithm is designed to simulate various halls, rooms and reverberation plates. Decay time defines the time it takes for the reflected sound from the room to decay or die away. The diagram below shows a generalized reverberation envelope. 5 - Effects Core Effects Descriptions Early Reflections Late Reverb Time After a short pre-delay period, the echoes from the closest walls or ceiling are heard. These first echoes, or early reflections, vary greatly depending on the type of room. Some time after the early reflection cluster ends (late reverb delay), the late reverberation (a dense cloud of complex wall reflections) begins and decays according to the time set by the Decay Time parameter. Diffusion is the amount of scattering and density of the late reverberation cloud. Rooms with many complex surfaces have more diffusion than bare rooms. High frequency energy tends to fade away first as a sound is dissipated in a room. The High Frequency Damping parameter adjusts the time it takes for the high frequency energy to die away and thus changes the characteristics of the room. Rooms with smooth, hard surfaces are more reflective and have less high frequency damping. Rooms filled with sound absorbing materials, such as curtains or people, have more high frequency damping. The Low Frequency Damping parameter adjusts the time it takes for the low frequencies to die away. This control adjusts the "boominess" of the room. Parameter Decay Time Early Reflections Level Early/Late Reverb Bal Late Reverb Delay Diffusion High Freq. Damping Low Freq. Damping Description Sets the length of the Late Reverb. Range 1.5 to 30 seconds Sets the volume of the initial wall reflections. Range: 0% to 100% Adjusts the balance between early refections and late reverb. Range: 0% to 100% Sets the time between early reflections and the onset of the late reverb cloud. Range: 1ms to 350ms Sets the amount of scattering of the late reverb cloud. Range: 0% to 100% Sets the rate at which high frequencies die away. Range: -10.0 to +3.0 damping factor Sets the rate at which low frequencies die away. Range: -10.0 to +3.0 damping factor E-MU PCIe Digital Audio Systems 79

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5 - Effects
Core Effects Descriptions
E-MU PCIe Digital Audio Systems
79
Stereo Reverb
Reverberation is a simulation of a natural space such as a room or hall. The stereo
reverb algorithm is designed to simulate various halls, rooms and reverberation plates.
Time
Early Reflections
Late Reverb
Parameter
Description
Decay Time
Sets the length of the Late Reverb. Range 1.5 to 30 seconds
Early Reflections Level
Sets the volume of the initial wall reflections.
Range: 0% to 100%
Early/Late Reverb Bal
Adjusts the balance between early refections and late reverb.
Range: 0% to 100%
Late Reverb Delay
Sets the time between early reflections and the onset of the late
reverb cloud. Range: 1ms to 350ms
Diffusion
Sets the amount of scattering of the late reverb cloud.
Range: 0% to 100%
High Freq. Damping
Sets the rate at which high frequencies die away.
Range: -10.0 to +3.0 damping factor
Low Freq. Damping
Sets the rate at which low frequencies die away.
Range: -10.0 to +3.0 damping factor
Decay time defines the time it takes for the reflected sound from the room to decay or
die away. The diagram below shows a generalized reverberation envelope.
After a short pre-delay period, the echoes from the closest walls or ceiling are heard.
These first echoes, or early reflections, vary greatly depending on the type of room.
Some time after the early reflection cluster ends (late reverb delay), the late reverber-
ation (a dense cloud of complex wall reflections) begins and decays according to the
time set by the Decay Time parameter.
Diffusion is the amount of scattering and density of the late reverberation cloud.
Rooms with many complex surfaces have more diffusion than bare rooms.
High frequency energy tends to fade away first as a sound is dissipated in a room. The
High Frequency Damping parameter adjusts the time it takes for the high frequency
energy to die away and thus changes the characteristics of the room. Rooms with
smooth, hard surfaces are more reflective and have less high frequency damping.
Rooms filled with sound absorbing materials, such as curtains or people, have more
high frequency damping.
The Low Frequency Damping parameter adjusts the time it takes for the low
frequencies to die away. This control adjusts the “boominess” of the room.