This application ranks in my top 5 for palm creativity. It has got to be one of the most unusal and ambitious uses for a palm handheld device.
SoundPad is an FM Synthesiser for a palm OS PDA. It allows you to create FM synthesised sounds which can then be used be other applications (NotePad and BeatPad initially).
This follows the software synthesis model of having an application which works as a sequencer / or host and other applications which work with the sequencer to provide sounds.
SoundPad runs in under 100k. It allows to create banks of sounds which you can then populate. The first screen is a bit of an admin screen really, giving you bank functions and allocating instruments to slots in the bank.
The second screen is the real eye opener. This screen is where you manipulate waveforms and their envelopes to allow you to create sounds. Each sound can be made up of up to four oscilators. Each oscillator can be set to noise if you choose.
Each wave has an ADSR Envelope. This can be manipulated using the superb interface.
Once you've made your sound other applications can access it, such as NotePad or BeatPad.