║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐
╟┐ ┌╢▐ ╠╪════════════: BitSynth: Controlled Quantization Synth :════════════╪╣▐ ╟┘ └╢▐ ║ BitSynth started out as an NES synth emulator but I decided ║▐ ║ to expand the capabilities. The user can choose how much ║▐ ║ quantization/resolution (1 to 8 bits) they want for the ║▐ ║ selectable waveforms. There are seven different waveforms ║▐ ║ made up of one to three oscillators, saw x3, square x3, ║▐ ║ saw/square/saw, triangle/square/triangle, ║▐ ║ triangle/square/triangle, hard-sync saw, and NES (similar ║▐ ║ to the triangle waveform produced by the old Ricoh 2A03 ║▐ ║ chip found in the Nintendo Entertainment System). Holding ║▐ ║ true to the original design, there is a switch to set ║▐ ║ synthesizer to a constant velocity, and I have added a ║▐ ║ switch to turn on a low-pass filter to get rid of some of ║▐ ║ the aliasing due to the sharp jumps of the quantized ║▐ ║ waveforms, but this also kills some of the quantization, so ║▐ ║ that's why it's optional. ║▐ ║ ║▐ ║ Additionally, a user can produce a few variations of white ║▐ ║ noise. The NES could produce 16 different noise ║▐ ║ frequencies, but this design narrows it down to four. The ║▐ ║ keys used to trigger the white noise can be moved around ║▐ ║ with a slider to set a position for where they are played ║▐ ║ on the keyboard, so if you want to play high frequencies ║▐ ║ with noise notes, the noise start can be set to a MIDI note ║▐ ║ of 40 or if you want the reverse, you can move the noise ║▐ ║ start up to somewhere around 80. The noise variances are ║▐ ║ created by filtering the white noise. The lowest noise is ║▐ ║ produced with a low-pass filter on the noise with a cutoff ║▐ ║ frequency of 1200 Hz. The two middle noise frequencies are ║▐ ║ produced with band-pass filters on the noise at 800 Hz and ║▐ ║ 3200 Hz. The highest noise frequency is produced with a ║▐ ║ high-pass filter on the noise starting at 3200 Hz. The ║▐ ║ noise volume can be adjusted with the Noise Osc slider. ║▐ ║ ║▐ ║ This project was created in RackAFX and tested in Ableton 9 ║▐ ║ Live. ║▐ ║ ║▐ ║ NES waveform with 3 bit quantization: ║▐ ║ ║▐ ║║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ ║▐ ║ Downloads ║▐ ║ ║▐ ║ dll file (VST compatible) ║▐
╟┐ ┌╢▐
╠╪═══════════════════════════: Projects :════════════════════════════╪╣▐
╟┘ └╢▐
║ DEF CON 31 Hardware Hacking Village CTF .............. 2023 ║▐
║ THOTCON 0xC Electronic Conference Badge .............. 2023 ║▐
║ DEF CON 30 Hardware Hacking Village CTF .............. 2022 ║▐
║ ParFive: a Daily Golf-Themed Word Game ............... 2022 ║▐
║ THOTCON 0xB Electronic Conference Badge .............. 2022 ║▐
║ DEF CON Hardware Hacking Village CTF ................. 2021 ║▐
║ SAOwner: Electronic Badge i2c Interposer ............. 2019 ║▐
║ Pintwood Derby: Team Cheetah Strikes Again ........... 2019 ║▐
║ Commuter - Game and Controller ....................... 2018 ║▐
║ crAPU: crappy Audio Processing Unit SAO for DC26 ..... 2018 ║▐
║ Pintwood Derby: the Cheetah Car ...................... 2018 ║▐
║ RAND: IDEO Chicago Installation ...................... 2017 ║▐
║ Ox Vox: DEF CON 25 and BSidesPDX Badge Hack .......... 2017 ║▐
║ Upgrading the Oxygen Concentrator Inferface .......... 2017 ║▐
║ Giving Furby a New Voice Box ......................... 2017 ║▐
║ Cigar Mic: DEF CON 24 Badge Hack ..................... 2016 ║▐
║ Personal Logo Design ................................. 2014 ║▐
║ 9-Degrees of Freedom Wireless IMU .................... 2014 ║▐
║ BitSynth: Controlled Quantization Synth .............. 2013 ║▐
║ Psychomasker: Audio Compression Visualization App .... 2013 ║▐
║ Bike Design Using Webcode ............................ 2013 ║▐
║ Canal Construction Logo Design ....................... 2013 ║▐
║ Record Player Design Using Webcode ................... 2013 ║▐
║ Subzero: Refrigerator Subwoofer ...................... 2013 ║▐
║ Shark Attack Game for iPad ........................... 2013 ║▐
║ Gardner Nested All-Pass Filter Reverb Plugin ......... 2013 ║▐
║ Slam Mixer Audio Mixer App for iPad .................. 2013 ║▐
║ Roland Space Echo Audio Plugin ....................... 2013 ║▐
║ MIDIogame Controller: Creating Music From Gameplay ... 2012 ║▐
║ Car Charger Technical Illustration ................... 2012 ║▐
║ eVORG Logo Designs ................................... 2012 ║▐
║ Newark Bike Project Designs .......................... 2012 ║▐
║ DEFCON 19 Bot Badge .................................. 2010 ║▐
║ WiiAssist: 3D Head Tracking with Wiimotes ............ 2009 ║▐
║ Off-the-Shelf Open Source Security System ............ 2009 ║▐
╟┐ ┌╢▐ ╠╪═════════════════════════════: About :═════════════════════════════╪╣▐ ╟┘ └╢▐ ║ Part hardware hacker, part creative technologist, and part ║▐ ║ human-centered designer thriving at the cross-section of ║▐ ║ engineering and design. ║▐ ║ ║▐ ║ Led to engineering through my love for music, art, and ║▐ ║ math, I hold degrees in electrical, computer, and music ║▐ ║ engineering. Following a stint in academia, I joined IDEO ║▐ ║ as a senior electrical engineer where I contributed ║▐ ║ creative problem solving and prototyping fluency to a ║▐ ║ breadth of projects ranging from vehicles of the future, to ║▐ ║ life-changing medical equipment, to innovative children's ║▐ ║ toys. Most recently, I was at Delve and now Sundberg-Ferar, ║▐ ║ diving deeper into engineering for production, and working ║▐ ║ on bringing ideas and prototypes to reality. ║▐ ║ ║▐ ║ Outside of work, I enjoy creating rotoscopes and ║▐ ║ illustrations, reverse engineering electronic toys, and ║▐ ║ taking a break from screens by running, biking, and camping ║▐ ║ in the great outdoors. ║▐
╟┐ ┌╢▐ ╠╪═══════════════════════════: Education :═══════════════════════════╪╣▐ ╟┘ └╢▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ MS in Music Engineering ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ School .... University of Miami, Miami, FL ║▐ ║ Grad year . 2014 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡ MS in Electrical and Computer Engineering ≡≡≡≡≡≡≡≡=- ║▐ ║ School .... University of Delaware, Newark, DE ║▐ ║ Grad year . 2012 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡ BEE in Electrical Engineering ≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ School .... University of Delaware, Newark, DE ║▐ ║ Grad year . 2011 ║▐
╟┐ ┌╢▐ ╠╪══════════════════════════: Experience :═══════════════════════════╪╣▐ ╟┘ └╢▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Senior Electrical Engineer ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... Sundberg-Ferar, Detroit, MI ║▐ ║ Key roles . Launched and led Electrical Engineering offering ║▐ ║ . Developed embedded hardware and software products ║▐ ║ . Managed projects and client relationships ║▐ ║ . Designed from prototype through manufacturing ║▐ ║ Years ..... May '22 - Present ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Senior II Electrical Engineer ≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... Bresslergroup / Delve, Philadelphia, PA ║▐ ║ Key roles . Developed embedded hardware for diagnostic devices ║▐ ║ . Developed embedded firmware with precision-timing ║▐ ║ . Designed for manufacturing ║▐ ║ Years ..... Nov '20 - Apr '22 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Senior Electrical Engineer ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... IDEO, Chicago, IL ║▐ ║ Key roles . Specialized in rapid hardware prototyping ║▐ ║ . Developed embedded and front-end software ║▐ ║ . Designed human-centered solutions for clients ║▐ ║ Years ..... Sep '14 - Oct '20 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ User Experience Intern ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... Shure, Niles, IL ║▐ ║ Years ..... Summer '13 & Summer '14 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Graduate Research Assistant ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... Univ. of Miami, Music Eng Dept, Miami, FL ║▐ ║ Years ..... Aug '12 - May '14 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ Co-Founder and Shop Manager ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... Newark Bike Project, Newark, DE ║▐ ║ Years ..... Oct '11 - Aug '12 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡≡≡ Undergrad/Grad Research Assistant ≡≡≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Company ... Univ. of Delaware, Elec/Comp Eng Dept, Newark, DE ║▐ ║ Years ..... Feb '09 & Aug '12 ║▐
╟┐ ┌╢▐ ╠╪════════════════════════════: Skills :═════════════════════════════╪╣▐ ╟┘ └╢▐ ║ -=≡≡≡≡≡≡≡ Engineering ≡≡≡≡≡≡≡=- ║▐ ║ Hardware Hacking 3D CAD Modeling Embedded Dev & Design ║▐ ║ Reverse Engineering Prototyping Human-Centered Design ║▐ ║ Digital Synth Design PCB Design Human-Comp Interaction ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡ Languages ≡≡≡≡≡≡≡≡=- ║▐ ║ C, C++, Obj-C HTML, CSS Spanish (int) ║▐ ║ Basic Assembly Javascript Japanese (beg) ║▐ ║ Matlab Python ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡ Software ≡≡≡≡≡≡≡≡≡=- ║▐ ║ Adobe Creative Cloud Autodesk Fusion Microsoft 365 ║▐ ║ ║▐ ║ -=≡≡≡≡≡≡≡≡≡≡ Other ≡≡≡≡≡≡≡≡≡≡=- ║▐ ║ Screen Printing Bike Mechanic Furby Technician ║▐ ║ Sketching Illustrating ║▐
╟┐ ┌╢▐
╠╪═══════════════════════: Honors and Awards :═══════════════════════╪╣▐
╟┘ └╢▐
║ 2nd Place NorthSec CTF ............................... 2022 ║▐
║ 1st Place DerbyMUD CTF, Derbycon 9.0 ................. 2019 ║▐
║ 1st Place Digerati's Atlas CTF, THOTCON 0xA .......... 2019 ║▐
║ 2nd Place Badge CTF, THOTCON 0x9 ..................... 2018 ║▐
║ 2nd Place Music Hack Day Miami ....................... 2014 ║▐
╟┐ ┌╢▐
╠╪════════════════════════════: Contact :════════════════════════════╪╣▐
╟┘ └╢▐
║ Email .................................... website@<domain> ║▐
║ Blog ............................................. reset.io ║▐
║ Github ......................................... mediumrehr ║▐
║ Codepen ......................................... robrehrig ║▐
╟┐ ┌╢▐
╠╪════════════════════════════: Greetz :═════════════════════════════╪╣▐
╟┘ └╢▐
║ .: Malörtware & cold_root :. ║▐
║ ║▐
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▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀designed and developed by rob rehrig