Stephan (Hagen) O'Farrill

Open to take opportunities in the field of professional audio related software development as freelance projects. Application, kernel driver and embedded software development. Current customers: TC Electronic A/S (www.tcelectronic.com), Access Music Electronics GmbH (www.access-music.de), Ploytec GmbH (www.ploytec.de), SSL (www.solid-state-logic.com), ALVA Music GmbH (www.alva-music.de)

Port of TC Audio processing plugins to UADs SHARC based DSP platform.

DICE family based firewire audio interface software development; multi channel test bench for automated audio and performance measurements and hw/sw serviceability analyzation; specification and deployment of a general way to compare audio streaming quality and reliability; automated build system for customized driver, firmware and docu; institute test driven development; 3rd party dev support: Allen&Heath, Alesis, Eventide, Focusrite, Lexicon, PreSonus, Stanton, Studer

design and implementation of a multithreaded platform abstraction layer for OSX and WDM to harmonized device functionality access, design of control panel application

system software architect for the audio DSP platform PowerCore/PCI and FW, driver design and kernel level development (WDM: XP, 2000, 98, Me; OSX, OS9), realtime multitasking firmware and DSP assembler core software design and development (MPC8240/45 and DSP56362/367), OHCI firmware stack design and development (TSB43x), SIMD assembler audio streaming, algorithm and format converter design and implementation (PPC velocity engine, SSE2), developers support for Access, Sony, Waldorf, TC Helicon, Novation

CTI (voice-over-IP/ISDN switch) with dedicated PCI hardware for Windows 2000, design and implementation of an ADSP-2100 assembler switch core software, design and implementation of control application, NT service, middle-ware, monitoring and test tools

firmware development for speech switch technology for air traffic control systems, design and development of embedded system audio switch and low level hardware access applications, porting of an embedded multitasking OS from the 80186 to the 80386 platform, refine existing ADSP-2100 assembler system software

foundation of the publishing label for electronic music, advertising, public relations, marketing, graphic design

foundation of the music studio for electronic music, composing, playing, mastering; planning, design and implementation of a modular DSP56k framework (synthesizer/effect processor) for in-house use, analysis of undocumented hardware, disassembling and reverse-engineering of existing drivers, design and implementation of a realtime assembler 56k OS for modular processing, incl. various modules (generators, modulator, midi controller, analysis views, envelope generators, filters, etc)

design and development of a DSP32c speech synthesizer (based on the "Klatt" model), furthermore a phonological script control language and interpreter, design and development of a multi-timbrel DSP32c wavetable synthesizer and script based control software for psycho-acoustic test series (in collaboration with the Institute of Neuro-psychology Vienna), design and development of DSP32c software and command line control panel to simulate inter-aural differences in time and intensity

self-employed collaboration with C+S Computer und Software GmbH Schorndorf/Germany whilst last year at secondary school, design and development of DOS and Windows data acquisition and quality assurance software for process control and statistic analysis, gathering GUI and OOP experience

Speech Synthesis Algorithm & Analysis Technologies

Speech Synthesis