Tone control demonstration

Welcome to the three band ToneControl panel! The tonecontrol demo consists of one high-pass, one band-pass and one low-pass filter.

General information

As for the other audio demos, this application controls the Sun Audio device. By default, the Ptolemy universe that created it configures the device to run stereo at 44.1 kHz with 16-bit linear encoding.

The demo consists of one each of high, band and low-pass filters. There is a single control panel, with control over the band gain for each filter. The frequency ranges for the filters can be set using the "edit parameters" (e) feature of Ptolemy.

Controls

Input and output selectors
The input and output selectors do the obvious thing. Or, at least, they would if they worked.
Rec
Controls the gain on the input. For CD source, this should really be down quite low to avoid clipping.
Bal
Controls the balance of the output signal. Negative numbers are left, positive are right.
Low
Controls the output gain of the low-pass filter. Again, If the gain too high or there's too much gain in the filter, you'll hear clipping.
Mid
Controls the output gain of the band-pass filter. Again, If the gain too high or there's too much gain in the filter, you'll hear clipping.
High
Controls the output gain of the high-pass filter. Again, If the gain too high or there's too much gain in the filter, you'll hear clipping.

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Last updated: 05/07/98, comments to: tycho@eecs.berkeley.edu