Category Archives: Widgets

Pole-Zero placement

Use the new, improved pole-zero calculator—but be sure to read the “Experiments with standard biquads” section below for tips on placing poles and zeros for standard filters. Here’s a Java applet that illustrates pole-zero placement. It lets you design a … Continue reading

Posted in Biquads, Digital Audio, Filters, IIR Filters, Widgets | 8 Comments

The Fourier series

(Java is no longer supported by many popular browsers, and can be difficult to enable others…) Experiment with harmonic (Fourier) synthesis with this Java applet! The sliders represent the levels of the first eight harmonics in the harmonic series. The second harmonic … Continue reading

Posted in Digital Audio, FFT, Fourier, Widgets | 3 Comments

A Java MIDI reference

If you had a Java-equiped browser, you’d see as applet here that looks like this. Choose the MIDI message type from the message pop-up menu to display the corresponding MIDI message bytes. For channel messages, you can choose the MIDI … Continue reading

Posted in MIDI, Widgets | Leave a comment