8-26

Delay

Figure 8-12Delay component.

Delay (see Figure 8-12) is used to compensate for differences in the physical alignment of loudspeakers or loudspeaker drivers.

In the ISP-100, the delay in each output channel is adjustable in the range 0 – 2,500 milliseconds (depending on QuickMAP used) in 20.833 microsecond (single sample) increments. This translates to approximately (0 - 2750 feet) in 0.275 inch increments, assuming that the speed of sound is approximately 1100 ft/sec.

Setting Delay

The Delay control can be adjusted two ways:

Using the Text Box

Click in the box. Using the Back Space and/or Delete keys erases the current entry and enters the new level. Be sure to press the Enter key after the entry is made. Clicking outside the text box without pressing the Enter key will cause the setting to return to the number that it was before a change was attempted. Alternatively, click and drag across the number in the box to highlight the number in it. Type the new setting and press the Enter key when finished.

Using the UP/DOWN Arrows

To increase the level, click on the up arrow. To decrease the level attenuation, click on the down arrow. The amount of increase or decrease is controlled by the fine/coarse control.

Fine (F) or Coarse (C) Control

This button determines the increment/decrement associated with the UP/DOWN arrows. Fine produces small steps in value, while Coarse provides large steps in value. Clicking on the button will toggle the setting.

Bypass Control (master)

This button determines if the component is in the processing chain. If the LED on the button is gray, then the component is inserted into the signal processing chain. If the LED is red, then the component is bypassed in the signal processing chain. A bypassed component will be colored red in the QuickMAP.

10 July 1998

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Image 96
Telex ISP-100 manual Setting Delay