Alesis 3630 manual Side Chain Applications, Noise Gate Meter Open or Closed

Noise Gate Meter (Open or Closed)

When the noise gate is closed (i.e., the input signal is below the noise gate threshold), the red Close LED is lit. When the noise gate is open and letting through the input (i.e., the input signal is above the noise gate threshold), the green Open LED is lit. The red Close LED fades from on to off over the time set by the noise gate Rate control.

Since either the Open or Close LED will be on at all times, these also serve as power-on indicators.

1.8 SIDE CHAIN APPLICATIONS

The side chain jack allows for two useful functions:

•"Keying" one signal with another, so that the dynamics of one signal depend on the dynamics of a second signal

•Frequency-dependent limiting, so that limiting is triggered only by certain frequencies.

The side chain jack is a stereo jack, where the ring connection sends the 3630's control signal for processing, and the tip connection receives the processed sound. For keying applications, a regular mono cord can be used since it is not necessary to send the 3630's control signal out for processing. For frequency-dependent limiting applications that in- volve plugging into another signal processor, a special stereo-to-dual- mono cord is required, as shown below.

Mono send to EQ (ring)

Ring Sleeve

Tip

Stereo Insert (to 3630 sidechain)

Mono return from EQ (tip)

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