The system block diagram below shows a preliminary layout of the project subsystems. The audio signal and power for the device enter from the left. The audio signal is processed by the Audio subsystem to filter out all frequencies but the ones the device intends to convert into sound waves and to provide a relative volume level control.

     The Flame and Interface subsystem controls the initial size of the corona flame and provides a method to use the processed audio signal to alter the flame, producing sound.

     The High Voltage subsystem has the job of creating high voltage spikes that produce a corona. The magnitude of this discharge is controlled by the Flame and Interface subsystem. A Faraday shield will be constructed to screen out unwanted Electromagnetic interference while letting sound waves pass through.

     The Power Supply will power the low-voltage electronics associated with the Audio control subsystem and the Flame control subsystem, and also supply power to the high voltage generator. This power supply should be designed to filter out any electrical interference the high voltage generator may cause in the Audio and Flame control subsystems. The bulk of the power consumption will be directed at the high voltage generator and should not exceed 150 volt-amps.