TIIC2015- 7Deadly Synths, a non contact synthesizer

 


University: University of Florida
Team Members: Sean Lyons, Troy Bryant
TI Parts Used:

1x

TMS320F28335

1x

TPS70351

1x

TLV320DAC3101

3x

LM324N

3x

LM324N

1x

SN74CBTLV16292

14x

TL07X

3x

LM13700

1x

OPA1642

1x

LM1084-5

2x

TPS65131

2x

UA78M12

2x

UCC384-12

 

Project Description

The 7DeadlySynths project began as a capstone design project at the University of Florida. The idea was simple, to create a new way to interact with music. We noticed that most instruments required a good amount of fine motor skills to master. With that in mind, we set out to create an instrument that could be controlled using coarse motor movements (such as a wave of the hand). This would allow disabled musicians to create sounds in a new way.

Twelve Infrared beams detect hand movement within a 3′ x 1′ space. Each infrared sensor corresponds to a key. The synthesizer is laid out like a piano, each key is a half step apart in pitch up to a full octave. This unconventional keyboard interface connects to two synthesis blocks. The analog block creates waveforms using discrete components and analog ICs, and the digital synthesis block is implemented in embedded software running on a DSP. The user interface for both synthesizers is fully modular, allowing the user to dial in their own unique sounds. Both synthesizers are mixed together before output allowing for further sonic experimentation.

We were inspired by the early analog synths of the 60’s and 70’s, we set out to create a bridge between eras by combining classic analog modular synth design with modern DSP based modular software synths.

The result is a novel musical instrument that is accessible for all musicians who want to move with their music.

Features
  • The project features a complete design, from power to DSP to analog
  • A synthesizer without a keyboard is a very non traditional instrument, the synthesizer instead detects the position of the user's hand in real time and synthesizes a note based on position of the hand
  • It all runs off of a 7.4v LiPo battery
  • It features a full featured GUI that allows the user to control the digital synth
  • The analog and digital synthesizer can be mixed and played together 
  • There is a rich sound effects stack that can be applied to the digital synth
  • The analog synth is fully modular allowing the user to plug and play using patch cables, also allowing the easy expansion
  • Coarse motor movements control the synth allowing it to be played by those who don't have precise fine motor skills (disabled, elderly, etc)
  • Features 35 TI ICs
  • Features 8 hand designed PCBs

Resources
  • Website which offers in depth descriptions can be found at 7deadlysynths.wordpress.com
  • DSP Code can be found on https://github.com/seanmlyons22/EEL4924C-Senior-Design
  • GUI Code can be found on https://github.com/seanmlyons22/EEL4924C-Senior_GUI
  • Youtube channel with demo videos can be found here: https://www.youtube.com/channel/UCk2SaEYNehMW4xsHywsIrdQ
  • Design files can be found at: 
    • https://www.dropbox.com/sh/hnhuusdozjrdzg9/AACvycOsRLICDdKatafD0I9ba?dl=0
    • https://www.dropbox.com/sh/ek75n5iy47aqqz1/AABzc9nr6eTx_ourOFDWJhpCa?dl=0

User's Guide

Lots of descriptions and how to use our product can be found at our website: 7deadlysynths.wordpress.com

<iframe width="560" height="315" src="https://www.youtube.com/embed/RpbRVDXVeZw" frameborder="0" allowfullscreen></iframe>

<iframe width="560" height="315" src="https://www.youtube.com/embed/-o38CmUGFgg" frameborder="0" allowfullscreen></iframe>

Video

 

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