Drawmer DS301 Manual do operador - Página 12

Procurar online ou descarregar pdf Manual do operador para Amplificador Drawmer DS301. Drawmer DS301 20 páginas. Dual midi expander gate

Using the External Key input provides the most common use for a gate where it

is required to 'tighten up' timing of two rhythmical tracks, the classic example

being to gate a bass guitar from the bass drum. The bass drum is normally the

key input and the bass is the processed audio. Correct settings will ensure that

no bass note will occur premature of the bass drum trigger. A less drastic

approach is to utilise the range control to reduce the gain of the audio track by

only a few dBs when not triggered.

If additional filtering is needed to the side chain of the audio input, it is possible

to use the side chain insert jack to 'patch in' extra equalisation, perhaps a graphic

or parametric filter. Using the Filter In/Out switch it is also possible to chain the

DS301 filters on to the end of any additional external EQ.

It is suggested that most normal types of expansion would not require the use of

the DS301 filters, in which case they should be manually de-selected during

expansion. They can be used, however, to create a specific effect.

DUCKING

Another use of the side chain is Duck. A side-chain signal exceeding the

threshold causes the main signal to undergo gain reduction, the rate and degree

being set using the envelope controls and the Range control. This is often used

when it is necessary to control the level of background music to make way for a

voice over and also in pop and rock mixing where one instrument can be made

to give way to another, for example, to drop the level of the rhythm guitar by a few

dB during a lead guitar solo. Successful ducking is effective with normally a small

gate range difference between the fully open and 'closed' levels.

With the Expand switch depressed, a Function switch setting of Duck causes the

DS301 to operate as a basic limiter. The unit was never designed to emulate a

full-function compressor limiter, but it is quite capable of handling routine gain

control tasks when all other dedicated compressors are already committed. It is

recommended that low ratios are used in this application and that release

settings greater than 100mS should be used to prevent obtrusive 'chattering'.

MIDI

The MIDI features of the DS301 may be conveniently divided into MIDI triggered

and MIDI generating categories, though the same procedure is used for setting

the basic MIDI parameters. In MIDI triggered mode, a specific MIDI note or range

of notes may be assigned to trigger the DS301, and again, the effect is slightly

different depending on whether the unit is set for Gate or Expander operation.

MIDI TRIGGERING

MIDI triggering is only active when the Key Source switch is set to the MIDI

position. In Gate mode, any incoming MIDI note on the designated channel, and

within the note range specified by the user, will be accepted as a trigger

regardless of its velocity or poly-pressure values. The green trigger LED flickers

when incoming MIDI data is detected on the correct MIDI channel, and this LED

lights solidly for the duration of the MIDI note when the MIDI data is within the

specified key range.

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