SADISS stands for socially aggregated, digitally integrated sound system.
It is a web-based application developed in the research project ‘The Choir & the Sound System’ at Anton Bruckner university (Linz, Austria) that bundles smartphones into monumental yet intricate sound systems or choirs.
The following two examples should give you a better understanding of how it is intended to work:
For a concert 100 people show up in the audience. Using a QR code displayed at the entrance to the venue they register their phones via their browser with the SADISS server for this specific performance allowing the performance to use the 100 smartphones as individual, independent synthesizers and loudspeakers creating a massively multichannel, immersive sea of sound.
For a performance 40 people show up. Again, they register their phones to the performance about to take place via QR codes. This time there are 4 different QR codes available linking to 4 different voices within this performance.
With 10 audience members having scanned each QR code, we have just created four sub-groups (or voices) of 10 members each potential enabling us to have the group of people sing 4-part harmonies and/or perform different actions while doing so.
Using headphones, the audience turned (co-)performers listen to pitches to sing/hum and (via text-to-speech synthesis) spoken instructions they follow.
While SADISS builds on one central approach, that is bundling of smartphones into orchestras by distributing different partials and text-to-speech items to be synthesized, quite a lot of different use cases can be imagined.