Graphic equalizer demonstration

Welcome to the 10 band Graphic Equaliser Demo! This demo consists of 10 band-pass filters with center frequencies spaced out at octaves. This demo illustrates the use of Ptolemy to develop a CD-stereo system!

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 10 band-pass filters with center frequencies spaced out by octaves. There is a single control panel with control over the gain of each band-pass filter, and record and play volumes and balance.

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.
Band-pass filters
Control the gain for each of the filters.

Shortcuts

Tycho Home Page


Copyright © 1997-1998, The Regents of the University of California. All rights reserved.
Last updated: 05/07/98, comments to: tycho@eecs.berkeley.edu