Why is it called a ladder filter?
Originally developed by Bob Moog in the mid-1960s for his modular synthesizers, the ladder filter (so named because of the shape of the circuit) has become synonymous with the Moog sound. Like the Moog Ladder, Roland’s ladder filter is a 24dB/octave low-pass filter.
What is ladder filter?
The Ladder Filter simulates low pass filters found in classic hardware synths. Cutoff knob. The filter cutoff frequency. Resonance knob. The filter resonance setting.
Why is Moog special?
It’s coveted because many people love it and, while there are very close imitations and clones, Moog has a unique sound and their instruments are classics with high build quality.
What is the name of the Moog low pass filter?
The black Moogerfooger MF-101 Low-Pass Filter from Moog is a tabletop- or pedalboard-operable voltage-controlled low-pass filter for both line- and instrument-level sources. It can be used for synths, guitar, and bass as well as recorded sources.
What is a transistor ladder filter?
A type of voltage controlled filter circuit, developed by Bob Moog in the mid-1960s. The transistor ladder uses two transistors and one capacitor per pole. The characteristic sound becomes especially prominent when resonance is increased, and when the input signal is hot enough to drive the circuit into distortion.
How does a diode ladder work?
The diode ladder works on a similar principle to the Moog transistor ladder; the diode, under the influence of an applied control voltage, permits or limits current flow to a filter capacitor, such that as the control voltage is varied, the filter’s cutoff frequency changes.
What is diode ladder filter?
The diode ladder works on a similar principle to the Moog transistor ladder; the diode, under the influence of an applied control voltage, permits or limits current flow to a filter capacitor, such that as the control voltage is varied, the filter’s cutoff frequency changes. The famous TB-303 filter is a diode ladder.
What does the Moog symbol mean?
56 years ago this month, Bob Moog introduced the logo in an R. A. Moog Co. newsletter. “The musical note instantly evokes the feeling of music, while the surrounding circle, open at the top, creates a sense of unity and movement,” he wrote.
Why is Moog expensive?
Many of the most popular synths on the market are monophonic. Dave Smith/Sequential, Korg, Moog and Behringer all produce sought-after mono synths at different prices. That’s why polyphonic synths tend to cost more – there’s way more circuitry involved!
What is a low pass filter pedal?
The Low Pass Filter pedal can be used for taming harsh high end such as fret buzz, string noise, and artifacts from other effects such as distortion pedals. It is also useful for simulating the high frequency roll-off of speaker cabinets.
Is the Moog the ladder a synth module?
Even though the Ladder filter is not a traditional synth module, it breathes the typical Moog character through every pore. It brings previously unheard sound design capabilities to the 500‑series form‑factor, and as you can see from the alternatives box, it has no real competition in this format.
How many transistors are in a moog filter?
Figure 1. The famous Moog filter, as it appeared in the Moog Prodigy analog synthesizer. We see here eight transistors in a “ladder”, biased with a resistive divider chain, being driven by a bias/control current Ibias.
When did Moog come up with the Minimoog filter?
One of his classic designs is a much‑loved filter circuit, on which Moog filed a US patent in 1966, and which became one of the most important elements (if not the key element) in the Moog sound. The famous Minimoog Model D, the world’s first compact and portable synthesizer, employed this filter, as did many of its successors.
How did the ladder filter get its name?
Interestingly, it gained its name ‘ladder filter’ from the schematic of the filter circuit, which is based upon two symmetrical cascades of four transistors, with a capacitor between each pair of transistors. As you can see from the photo, this does indeed look like a ladder.