6 - Sample Edit

Tools 4

Tools 4

This submodule contains the advanced digital processing tools listed below.

Transform Multiplication: This function merges two sounds together in a unique way which can create many strange and beautiful sonic textures. Frequencies common to the original sounds are accentuated while uncommon frequencies are discarded.

Doppler: This unique function allows you to dramatically move a sound from front to back and side to side in a 3-D space. Several pre-computed paths are available.

Time Compression: This function changes the length of a sample without changing the pitch. This can be very useful for fitting samples to the beat of a song or fitting dialog into a spot. Samples can be compressed or expanded in length from 50% to 200%.

Pitch Change: This function changes the pitch of a sample without changing the time relationships between events. The maximum amount of pitch change is ±1200 cents (± one octave).

Bit Converter: This function allows you to decrease the bit resolution of your samples.

Beat Munger: This amazing feature lets you change the tempo, time signature and add or subtract swing from recorded music.

(Available only on Ultra Emulators.)

230 E-MU Systems

_ Caution: Transform Multiplication can take quite a bit of time with longer samples. Begin your experiments with short samples or even sample attacks as these will give good initial results.

O Ideas for using Transform Multiplication:

•Try using the same sound for both samples.

•Splicing silence to the beginnings or ends of short samples can change the spectral characteristics of the result.

•Using speech as one of the sources, it is possible to “speak from within” violins, bassoons, cymbals, etc.

6 - Sample Edit

Transform Multiplication

Transform Multiplication

This unique function merges two sounds together so that frequencies common to both sounds are accentuated while uncommon frequencies are discarded (also called Convolution). Because of this characteristic, Transform Multiplication tends to work best with sounds that are harmonically rich. Transform Multiplication is a powerful synthesis technique which can produce strange and beautiful timbres. Try it!

Using this function is easy, just pick two sounds and go. The length of the resulting sample will be equal to that of the current sample.

v To Transform Multiply Two Samples:

1.Press the Sample Edit key. The LED illuminates and the main sample edit screen appears.

2.Select the first sample that you want to multiply using the Data Entry Control, INC/DEC keys, or the numeric keypad.

3.Press the Tools 4 function key (F5). Another row of function keys appears.

4.Press the XMult function key (F1). The following screen appears.

5.Select the second sample to be multiplied using the Data Entry Control or the INC/DEC keys. The second line of the window will show the sample length and rate of the second sample.

6.Press OK to begin processing or Cancel to cancel the operation.

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6 - Sample Edit

Doppler

Doppler

This function allows you to apply a programmed sound path to a mono sample or the left side of a stereo sample. The result is a stereo sample with pitch shifts and left-right gains adjusted according to the path. The sound can move dramatically forward-back and left-right in a 3-D space in front of the listener. Several interesting programmed paths are available.

v To Doppler Shift a Sample:

1.Press the Sample Edit key. The LED illuminates and the main sample edit screen appears.

2.Select the sample that you want to dopplerize using the Data Entry Control, INC/DEC keys, or the numeric keypad.

3.Press the Tools 4 function key (F5). Another row of function keys appears.

4.Press the Doppler function key (F2). The following screen appears.

The doppler parameters are as follows:

Path: Sets the course that the sound will travel.

•Pitch Shift: (On/Off) When pitch shift is turned Off, the processor functions as an auto-panner.

•Threshold: Certain sound paths may take the sound source very far away from the listener, resulting in little or no resulting amplitude. The “Threshold” parameter specifies the maximum amplitude attenuation of the original sample that will ever occur. By setting this parameter appropriately, you can ensure that the resulting sample will produce at least a minimum amplitude output at every point along the path. A setting of 0 dB would prevent any amplitude changes whatsoever. A setting of -96 dB would not prevent the sound from completely fading away at some points.

•Duration: The Path Duration allows you to scale the path time so that it runs to completion in a time shorter than the length of the sample. The default value is always the length of the sample. If autorepeat is Off (see below), the sound will remain at the end of the path until the sample is complete.

232 E-MU Systems

6 - Sample Edit

Doppler

•Auto Repeat: Auto repeat causes the path to repeat if the end is reached before the sample has completely played. Auto repeat will only occur if path duration is set to a value less than the sample length. The default setting for auto repeat is Off.

•Normalize After: This function (when On) automatically normalizes the sample after the doppler processing has been performed.

5.Specify the doppler parameters using the Data Entry Control or the INC/DEC keys.

The Path choices are as follows:

Fast-by (L->R)	Sound moves left to right quickly
Slow-by (L->R)	Sound moves left to right slowly
Far->Near (fast)	Sound moves far away to close quickly
Far->Near (slow)	Sound moves far away to close slowly
Near->Far (fast)	Sound moves close to far away quickly
Near->Far (slow)	Sound moves close to far away slowly
Small Circle	Sound moves in an 8 ft. circle in front
Medium Circle	Sound moves in a 50 ft. circle in front of you
Large Circle	Sound moves in a 120 ft. circle in front of you
Huge Circle	Sound moves in a 250 ft. circle in front of you
Random 1	Sound moves in a random path in front of you
Random 2	Sound moves in a different random path

The computed paths are always initially scaled to the length of the sample, although this time may be changed using the Duration parameter.

6. Press OK to process the sample or Cancel to cancel the operation.

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