Digi XPress Specifications download pdf (Page 111)

Chapter 7: DigiRack AudioSuite Plug-ins 105

Use the Ratio, Crossfade, Min Pitch, and Accu-

racy controls to fine-tune the Time Compres-

sion/Expansion process.

Ratio Sets the destination length in relation to

the source length. Moving the slider to the right

increases the length of the destination ﬁle,

while moving the slider to the left decreases its

length.

Crossfade Adjusts the crossfade length in milli-

seconds, optimizing performance of the Time

Compression/Expansion according to the type

of audio material being processed. (This plug-in

achieves length modiﬁcation by replicating or

subtracting very small portions of audio mate-

rial and very quickly crossfading between these

alterations in the waveform of the audio mate-

rial.)

Crossfade length affects the amount of smooth-

ing performed on audio material. This prevents

audio artifacts such as clicks from occurring.

Long crossfade times may over-smooth a signal

and its transients. This may not be desirable on

drums and other material with sharp transients.

Use the Crossfade slider to manually adjust and

optimize crossfade times if necessary. For audio

material with sharper attack transients, use

smaller crossfade times. For audio material with

softer attack transients, use longer crossfade

times.

Min Pitch Sets the minimum, or lowest, pitch

that will be used in the plug-in’s calculations

during the Time Compression/Expansion pro-

cess. The control has a range of 40 Hz to 1000

Hz.

This control should be set lower when process-

ing bass guitar or audio material with a low fre-

quency range. Set this control higher when pro-

cessing higher frequency range audio material.

Accuracy Prioritizes the processing resources al-

located to audio quality (Sound) or timing

(Rhythm). Moving the slider towards “Sound”

generally results in better sonic quality and

fewer audio artifacts. Moving the slider towards

“Rhythm” puts the emphasis on keeping the

tempo consistent.

When you are working with audio loops, listen

carefully and adjust the Accuracy slider until

you find a setting that keeps timing solid within

the region. If you don’t, start and end times may

be precise, but the beats in rhythmic material

may appear to be shuffled if too little priority is

given to Rhythm.

Time Compression & Expansion settings

created in version 4.x and later of Pro Tools

for Windows are not compatible with later

versions.

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