Drawmer DS301 Руководство по эксплуатации - Страница 8

Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Усилитель Drawmer DS301. Drawmer DS301 20 страниц. Dual midi expander gate

PEAK:

The Peak button gives a slight level boost to the leading edge of transient sounds

as the gate opens. This can be used to increase the penetration of drums and

other percussive sounds.

AUTO:

Selecting Auto disables the Attack control and makes the attack time of the side-

chain programme-dependent. Auto is suitable for routine noise elimination or for

processing signals with constantly changing dynamics.

HOLD:

Once the signal has fallen back below the threshold, the hold circuit keeps the

gate open until the expiry of the time set using the Hold control after which the

Release phase is entered. If the Hold time is set to a longer period than the

interval between trigger pulses, the gate will remain permanently open.

RELEASE:

The gate or expander closes at the rate set by the Release control. This is fully

variable from 5mS to 2S.

EXPAND:

The Expand push button changes the operational mode of the DS301. It also

enables either the Retrigger control or the Ratio control. In expand the Ratio

control is active using the yellow graticule marks, and the yellow LED is

illuminated. In gate mode the Retrigger timer is active using the white graticule

marks and the LED above Retrig is illuminated. With stereo link on, the expand

switch of channel 1 is the master, forcing channel 2 to operate in the same mode.

Note: It is very important to check the setting of Retrig/Ratio control when

switching between modes.

RETRIG/RATIO:

In Expander mode, the yellow graticule markings are applicable. This control sets

the expansion ratio in the range 1.2:1 to 50:1. A Ratio setting of 1.2:1 causes

subtle gain reduction when input signal is below the threshold, e.g if the input

signal is 5dB below the threshold setting, the expander circuitry will apply 6dB of

gain reduction. On the contrary, a Ratio setting of 50:1 will react almost

identically to a gate. In normal expander operation a Ratio of about 3:1 will be a

good starting value.

In Gate mode, the white graticule markings apply. The control sets the time that

must elapse before the gate will be allowed to retrigger which may be from 5mS

to 5S. This ability to inhibit retriggering is incredibly useful in treating sounds

closely followed by other high level sounds that would otherwise retrigger the

gate.

RANGE:

This control operates in both modes and sets the maximum amount of attenuation

that occurs. The range is from 0dB to 100dB and is useful to reduce the amount

of background noise between wanted sounds, but without eliminating it entirely.

This is often less obtrusive than using the gate or expander to create absolute

silence between sounds.

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