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Essential Plug_ins Страница: 18

M-Audio Pro Tools Recording Studio [18/83] Diffusion

Essential Plug-ins Guide14

Algorithm

This control selects one of seven reverb algo-

rithms: Hall, Church, Plate, Room 1, Room 2,

Ambience, or Nonlinear. Selecting an algorithm

changes the preset provided for it. Switching the

Size setting changes characteristics of the algo-

rithm that are not altered by adjusting the decay

time and other user-adjustable controls. Each of

the seven algorithms has a distinctly different

character:

Hall A good general purpose concert hall with a

natural character. It is useful over a large range

of size and decay times and with a wide range of

program material. Setting Decay to its maxi-

mum value will produce infinite reverberation.

Church A dense, diffuse space simulating a

church or cathedral with a long decay time,

high diffusion, and some pre-delay.

Plate Simulates the acoustic character of a

metal plate-based reverb. This type of reverb

typically has high initial diffusion and a rela-

tively bright sound, making it particularly good

for certain percussive signals and vocal process-

ing. Plate reverb has the general effect of thick-

ening the initial sound itself.

Room 1 A medium-sized, natural, rich-sounding

room that can be effectively varied in size be-

tween very small and large, with good results.

Room 2 A smaller, brighter reverberant charac-

teristic than Room 1, with a useful adjustment

range that extends to “very small.”

Ambient A transparent response that is useful for

adding a sense of space without adding a lot of

depth or density. Extreme settings can create in-

teresting results.

Nonlinear Produces a reverberation with a natu-

ral buildup and an abrupt cutoff similar to a

gate. This unnatural decay characteristic is par-

ticularly useful on percussion, since it can add

an aggressive characteristic to sounds with

strong attacks.

Size

The Size control, in conjunction with the Algo-

rithm control, adjusts the overall size of the re-

verberant space. There are three sizes: Small, Me-

dium, and Large. The character of the

reverberation changes with each of these set-

tings (as does the relative value of the Decay set-

ting). The Size buttons can be used to vary the

range of a reverb from large to small. Generally,

you should select an algorithm first, and then

choose the size that approximates the size of the

acoustic space that you are trying to create.

Diffusion

Diffusion sets the degree to which initial echo

density increases over time. High settings result

in high initial build-up of echo density. Low set-

tings cause low initial buildup. This control in-

teracts with the Size and Decay controls to affect

the overall reverb density. High settings of diffu-

sion can be used to enhance percussion. Use low

or moderate settings for clearer and more natu-

ral-sounding vocals and mixes.

Decay

Decay controls the rate at which the reverb de-

cays after the original direct signal stops. The

value of the Decay setting is affected by the Size

and Algorithm controls. This control can be set

to infinity on most algorithms for infinite re-

verb times.

M-Audio Pro Tools Recording Studio [18/83] Diffusion

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