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Oct 5, 2023 · Over a short initial production run of five years, the MS-20’s filter underwent some changes. But when the decision was made to develop an MS-20 Mini, it was the earlier MS-20 filter model— dubbed the ‘Mieda VCF’ – that proved the natural choice.
- Ladder Filters
- Steiner-Parker Filters
- Arp Filters
- Sem Filters
- Korg Filters
- Other Filters
- Additive vs. Subtractive Synthesis
- Basic Types of Filters
- Slopes and Poles
- Envelope, Tracking, and More
Originally developed in the mid-60s for their modular synthesizers, the ladderfilter—named for the shape of the circuit—has become synonymous with the Moog sound. The Moog Ladder was the first voltage-controlled low-pass filter of its kind, borrowing its structure from George Campbell's work with telephone systems at AT&T. With a 24dB/octave slope ...
The 12dB/octave Steiner-Parker filter was originally designed for the Steiner-Parker Synthacon, a rare American monosynth from the 70s—the sound and design differs from the 24dB/octave filters favored by many Moog-inspired bass synths. Taking a different track with its enormously popular bass synth series, Arturia opted to use a variation for its B...
As Robert Moog's patent for the Moog Ladder Filter was approved in 1969, Alan R. Pearlman was busy developing an innovative modular synthesizer design that could be programmed with or without patch cables. His engineer Dennis Colin employed a pleasant-sounding 24dB/octave ladder filter that was suspiciously familiar, dubbed the 4012. When the ARP 2...
During a stint as an ARP dealer, Tom Oberheim came up with an idea for a digital sequencer for synthesizers: at this point, the issue was that most synth players could not perform and simultaneously operate their sequencers. This gave him the idea for a standalone synthesizer add-on that provided extra functionality and the ability for the sequence...
Another famous filter, and one that happens to be famously aggressive, is that of the Korg MS-20, which has both a resonant 6dB/octave high-pass and resonant 12dB/octave low-pass filter in series, allowing the creation of band pass filtering when used in tandem. Both filters were voltage-controllable and had resonance functionality, delivering a no...
While all the previous filters mentioned here are used in subtractive, East Coast–style synthesis, the low-pass gate (LPG)— sometimes called the low-pass gate amplifier—originally designed by Buchla, is an appropriately unique and musical filter from the West Coast synthesis pioneers. Its amplitude rises and falls in coordination with its frequency...
As electronic instruments first started to appear, what would come to be known as synthesis was achieved through a complex and expensive process of mixing certain harmonics at certain amplitudes—in other words, stacking sine waves of different pitches and volumes to build sounds piece-by-piece. This is now referred to as additive synthesis. The eng...
The most common kind of filter is the low-pass filter, which allows frequencies below a certain point to pass. The point at which the filter starts working is the cutoff point, which can be set by turning your synth's cutoff knob. The opposite of the low-pass is the high-pass filter, which filters out low frequencies and allows high frequencies to ...
So far so good, right? You tweak the cutoff and it attenuates frequencies below, above, or around a certain point, and resonance emphasizes that point—but what about slopes and poles? What are they all about? If you look back up at the low-pass and high-pass filter illustrations above, you'll see that there's a gradual curve around the cutoff frequ...
There's more to a filter section than just cutoff and resonance, as anyone who has twiddled knobs will know. As with general amplitude, the shape of the filter can be controlled with envelope amount. The envelope amount knob (called "EG Int" on many Korgsynths) controls how much of the envelope will be applied to the filter. A synth may or may not ...
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In late 2006 Korg released version 1.6 of the software Wavestation which added a resonant filter. Also, "50 new Performances, 35 new Patches, and 32 new Wave Sequences are added to take advantage of this new resonant filter."
Common enough today, this was sensational stuff 14 years ago. If there was a shortcoming, it was the lack of filter resonance, which was to limit all Korg's AI-based keyboards, modules and workstation for the ensuing seven years.
Aug 1, 2014 · A few software developers have adopted limited variations on wavesequencing, and Korg themselves offer a virtual version, even going so far as to add - at long last - that resonant filter. The great Korg Wavestation emulations
Jul 16, 2020 · By 1994, Korg had ceased production of hardware Wavestations. But the technology returned in 2004 as Korg released the Wavestation as a VST/AU software plug-in, with every card-based expansion pack’s sounds included from the original hardware. Crucially, a resonant filter was added to the soft-synth’s architecture too.
Oct 17, 2019 · When Korg released the MS-20 in 1978, it was hoping to pioneer the next bestseller in semi-modular synths. Priced at just $750 ($2,950 adjusted for inflation), the powerful monophonic synth was a step up from the MS-10, its smaller sibling which was released the same year.
