6 - Sample Edit

Time Compression

	Time Compression
	This function allows you to change the length of a sample without
	changing the pitch. This is a useful function for fitting samples to the beat
	of a song or fitting dialog into a spot. Samples can be compressed or
Stereo samples maintain	expanded in length from 50% to 200% in steps of 1/10th of one percent.
	The tempo calculator makes it easy to change the tempo of sampled
phase accuracy when time	grooves. Simply set the original tempo to the tempo of the groove, then
compressed or expanded.	adjust the ratio until the new tempo matches the tempo you want.

v To Compress the Time of 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 process using the Data Entry Control, INC/DEC keys, or the numeric keypad.

If the sample is stereo, a 3. Press the Tools 4 function key (F5). Another row of function keys

pop up dialog box will ask you		appears.
to select left, right or both sides.	4.	Press the TimeX function key (F3). The following screen appears.

5.Enter the desired time compression (or expansion) ratio using the Data Entry Control, INC/DEC keys, or the numeric keypad. The lower line of the display will change to show the resulting length of the compressed or expanded sample. The New Tempo calculation will also update according to the entered Ratio.

Time Compression Ratios: 200% = Double the Length

50% = Halve the Length

6. Select the general type of sample to be processed.

234 E-MU Systems

6 - Sample Edit

Pitch Change

The following table lists the sample type choices.

deep	Predominant deep bass (to 14 Hz)
bass	Predominant bass (to 20 Hz)
mid-1	Average source material
mid-2	Average source material (high-mids)
high	Source material with high frequencies
tight	Maintains time accuracy - Drum loops
broad	Low bass energy but critical highs
broad-smooth	Both high & low freq. - Smooth output
difficult	Inharmonic or broadband material
noisy	Non-pitched - Sound Effects, etc.
tight-smooth	Rhythmic accuracy - Use small ratios
x-smooth	Rhythmic accuracy - Use small ratios

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

Pitch Change

This function is the exact opposite of Time Compression in that it changes the pitch of a sample without changing the time. The maximum amount of pitch change is ±1200 cents (± one octave).

v To Change the Pitch of a Sample:

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

2.Select the sample you want to process 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 PitchX function key (F4). The following screen appears.

5.Enter the desired pitch change interval in cents using the Data Entry Control, INC/DEC keys, or the numeric keypad.

6.Select the general type of sample to be processed.

EOS 4.0 Software Manual 235

6 - Sample Edit

Bit Converter

If you are not happy with the results of Pitch Change, simply Undo, then choose another algorithm.

O Tip #1: You can create silent samples by setting the bit resolution to zero.

Tip #2: The Bit Converter can be used to optimize samples for playback on 8 bit devices.

The choices are:

deep	Predominant deep bass (to 14 Hz)
bass	Predominant bass (to 20 Hz)
mid-1	Average source material
mid-2	Average source material (high-mids)
high	Source material with high frequencies
tight	Maintains time accuracy - Drum loops
broad	Low bass energy but critical highs
broad-smooth	Both high & low freq. - Smooth output
difficult	Inharmonic or broadband material
noisy	Non-pitched - Sound Effects, etc.
tight-smooth	Rhythmic accuracy - Use small ratios
x-smooth	Rhythmic accuracy - Use small ratios

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

Bit Converter

For those who want to return to a simpler time when samples were eight bits (or less), we offer the Bit Converter. The Bit Converter takes your pristine 16 bit samples and transforms them into any bit resolution you select. Ever wonder what a 1-bit sample sounds like? Find out with the bit converter. You cannot increase the bit resolution once it’s been removed.

v To Change the Bit Resolution of a Sample:

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

2.Select the sample you want to process 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 BitCnv function key (F5). The following screen appears.

5.Enter the desired bit resolution using the Data Entry Control, INC/DEC keys, or the numeric keypad.

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

236 E-MU Systems