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Overview |
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Introduction Detailed documentation on the Audity Z80 CPU (which was housed on a separate card in the floor rack) and the Console are not available. Console The Audity advert from 1980 provides a good picture of the Console so the layout and control electronics are easily replicated. The right hand and centre of the Console are taken up by the rotary encoders for the voice card programming, whilst the left hand side is for programming presets and saving them to 8" floppy diskette. In the Audity Zero this will be redesigned to enable single voice storage into non-volatile memory. No removable media is planned at this stage. Micro Processor A decision on using a single powerful PIC programmer has been made, with an on board ADC to read the analog controls, and hardware UART for MIDI. A possible PIC is the 16F628-20. I will test out my PIC skills on the AM3372 module (a Programmable Filter based on the Matrix 12 CEM3372). Keyboard & Sequencer The Audity prototype used a standard E-mu Systems 4070 polyphonic keyboard with digital sequencer. A more advanced keyboard was planned and advertised (the 4075), with a CRT display for advanced sequencing. This never materialised as the Audity project slowed down in late 1980, and Scott got involved with the Emulator project. The Audity Zero will use a 5 octave touch sensitive keyboard from an Emax, scanned and translated into MIDI data. A digital sequencer is included, by re-using and re-housing a Roland MC500 Micro Composer. The keybord MIDI data will go straight into the MC500, enabling complex sequences to be created and stored. |
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Manuals 
* Audity Brochure 1980
* Audity Voice