MATRIXSYNTH

Flight Of Harmony Plague Bearer Analog Synth Modular

via this auction

"THE FILGHT OF HARMONY - PLAGUE BEARER VERSION 1.1, #19 OF 20 --- Quad Voltage-Controlled Resonant Bandpass filter... Runs on batteries or power supply."

Roland TB-303 Bassline with AcidLab Mod

via this auction
"Fully functioning, except that it will only run on a power supply, since the battery leads were removed for the modification. Also, all holes were drilled for the CV/gate and audio mods, but never installed. The main modifications are present, though and working, ie. the overdrive, decay and resonance, x-mod pots and the Accent, Slide and bend switches and leds. MODIFICATIONS: overdrive, x-mod(cross modulation of oscillator), full accent on/off, full slide on/off, pitch bends, cut-off range expanded, resonance range expanded with new res. pot and decay can now be shorten to nice little Blips!!! Should be easy to add the cv/gate/audio jack mods if you want, with the directions from the acidlab site and some wire and 1/8th inch jacks. More info and specs"

Studio Electronics SE-1x LTD Red Eye Analog Synth

via this auction

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Roland Juno-106

via this auction

"The sliders for the LFO and DCO have been pulled out. As you can see the original sliders come with this auction. I have not been inside this keyboard so hopefully it will not be too hard to reinsert these sliders but they might need to be replaced."

Access Virus TI Polar

via this auction

The Sweeps - Breaking Up

YouTube via inkoggnito77
"Massive vintage synthesizer use, lots of Moog leads and Fender Rhodes presence in this live clip from German-based THE SWEEPS. Check them out on http://www.myspace.com/thesweepsmusic"

Nerve Net Noise, First Night Boston 2009

YouTube via monumentaldocuments.
"First US appearance of Japanese synth wizard. Crummy cell phone footage."
via Michael:
"Japanese synth noise mastery live on new years eve. Sorry I couldn't
get a shot of his gear, but it was an amazing homemade
dual-joystick-controlled synth."

Bandlimited ramp waveform example aiff files

"These sound files demonstrate bandlimited synthesis of a ramp wave from its fourier series. Limiting the synthesis to a particular number of harmonics affects the quality of the output. The question is how many are necessary for a satisfactory output?

The table below has example sound files of bandlimited ramps with increasing numbers of harmonics. There are tones over three octaves, starting from roughly 85Hz. Note that for the very large numbers of harmonics, there may be aliasing distortion present, since the harmonics will go above the Nyquist frequency for the 44.1KHz sample rate used for the examples."

You can find the table and samples on electric druid's Synth DIY pages.