The Structure Of Kurzweil Digital Effects (Kdfx) - Kurzweil K2600 - MUSICIANS GUIDE REV A PART NUMBER 910330 CHAP 9 Effects Manual

Basic effects mode

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Table Of Contents

Table of Contents

Dither

Dithering adds a small bit of noise to a digital signal to lower quantization distortion. Use the

Dither parameter to select different digital noise ßoor characteristics. No setting is superior to

anotherÑeach one is a tradeoff between perceived noise level and artifacts.

Flat Ñthe digital noise ßoor is spectrally ßat, so itÕs a good choice for resampling the K2600Õs

own output, as there will be no addition of noise in the process. This is sometimes known as

triangular dither.

Minimum , Medium, MaximumÑthese utilize noise shaping in varying degrees. The noise ßoor

has been essentially equalized to make it softer at midrange frequencies, and louder at bass and

treble frequencies. The overall power level of the noise is actually higher than at the Flat setting,

but due to the earÕs spectral response at low levels, the noise ßoor appears lower at these

settings.

These values are not as useful as Flat for resampling, since the boosted noise may become quite

noticeable if the sample is played transposed down a couple of octaves. In addition, repeated

resampling would cause buildup at the boosted frequencies.

NoneÑno dither. This is provided primarily for completeness. You generally never want to use

this setting, unless you are studying dither in a classroom, or you speciÞcally want to hear

digital artifacts. Low-level signals are extremely distorted using this setting.

Digital Word Length (DigOut)

This parameter is available only if you have the sampling option in your K2600.

The K2600 is capable of producing 20-bit digital audio signals. Normal 16-bit digital audio

provides a maximum dynamic range of about 96 dB; adding the extra four bits adds some 24 dB

to the dynamic range. ThereÕs an increasing number of products on the market that can handle

20-bit digital signals, including tape and hard-disk recorders, mixers, and signal processors, and

the K2600 can talk to these devices with the highest degree of Þdelity.

The DigOut parameter toggles between 16-bit and 20-bit operation. The value for DigOut

determines the word length used for the KDS eight-channel output, and also for the standard

digital output, provided it is in Direct mode (as set on the SampleMode page).

If you are using your K2600 with a Kurzweil DMTi, set DigOut to 16 Bit, since the DMTi

currently operates only in 16-bit mode. If youÕre connecting the digital output to a 20-bit (or

more) capable device, set DigOut to 20 Bit and you can take advantage of the signiÞcantly

reduced noise ßoor.

Note that the setting of DigOut doesnÕt affect any of the K2600Õs inputs: those are always

operating in 16-bit mode. Likewise, DigOut doesnÕt affect the K2600Õs own DACs (digital-analog

converters). They always operate in 18-bit mode.