This applet illustrate the concept behind the program I used for making some of the sounds on "The Lions are growing" A sound can be regarded as a union of different sinus waves, the scrollbars control the amplitude of different sinus waves at rising frequencies (from left to right) Set the scrollbars at the wanted level and press compute. The resulting waveform will be drawn and the sound played slightly delayed.

Here should have been an applet You need a Java supporting browser to view this applet (Netscape >=2.0, Microsoft Explorer >=3.0 or Hot java).