Multi-Tap Delay |
The Multi-Tap Delay allows you to create complex delay patterns through the use of several discrete delays. Each delay tap has its own delay time, amplitude, and stereo panning controls.
You can create a range of effects from complex rhythmic delays to pseudo reverbs using the Multi-Tap Delay effect.
Open the Sonic Foundry Multi-Tap Delay dialog.
Choose a preset from the Name drop-down list, or adjust the controls as desired:
a. Drag the Input gain fader to set the gain that is applied to the signal before processing.
b. Drag the Dry out fader to set the level of the unprocessed signal that will be mixed into the output.
c. Drag the Wet out fader to set the level of the processed signal that will be mixed into the output.
d. Adjust taps as desired.
e. Adjust modulation.
f. Drag the Feedback slider to create additional echoes. Feedback percentages of more than 100% will cause the repeating echoes to get louder over time.
g. Select the Low-pass start freq check box and drag the slider if you want to filter high frequencies.
The Multi-Tap Delay window is set up so that each tap can be adjusted separately. To choose the number of taps you wish to use, drag the Number of taps slider or click the arrow buttons to the right of the slider.
To adjust a specific tap
Click the Current tap radio button for the tap you want to adjust.
Drag the Tap gain fader to specify how loud the tap is relative to the original signal and to the other taps.
A
negative Tap gain
means that the tap is 180 degrees out of phase
with the rest of the signal.
Drag the Delay slider (or enter a value in the edit box) to set the interval between the dry and delayed signals.
Sound
travels at approximately 1 foot per millisecond, so you can simulate
a given room size by setting delays to match reflections from all
walls in the room. In a large room, sound must travel farther to
reach the reflection surfaces. Therefore, setting the echoes farther
apart creates a sense of being in a larger space.
Drag the Pan slider to pan the current tap to the left or right. Double-click the slider to reset it to the middle.
The
Pan
slider is available only when you are working with a stereo file.
To use the echogram
The echogram represents the amplitude of sound reflections over time (impulse response) as determined by the current settings. Each vertical line represents an echo of the original sound. The length of each line corresponds to its amplitude (as a percentage of the original sound), and its horizontal distance from the left edge represents the time elapsed after the original sound. The red line is the currently selected tap, black lines are the other active taps, and blue lines are echoes resulting from feedback.
Drag the Graph Resolution slider to specify the interval that is displayed in the graph.
This sample graph shows eight taps. The gain of each tap is less than the previous tap, and the third tap is highlighted because it is selected in the Current tap radio buttons.
All of the taps in the Multi-Tap Delay can be modulated to create lush chorusing or other effects.
Drag the Modulator rate slider to control how fast the delay times are modulated. Slower values will create subtle changes, while faster values will create more intense effects.
Drag the Modulator depth slider to control the range of the delay time modulation.
You can apply a low-pass filter to tailor the high-frequency content and create different frequency contours.
Select the Low-pass start freq. check box and drag the slider if you want to filter high frequencies. Move the slider to the left to filter more high-frequency material and to the right to leave more high-frequency material. The results are a brighter or more muted sound.