Instruō Introduces dåpf Dual All-Pass Filter Effects Processor Eurorack Module

via Instruō

"Introducing dåpf, the first dedicated effects processor in the Instruō product line. The Instruō dåpf is a set of two analogue all-pass filters.

You might be asking yourself, “What is the point of a filter that passes everything?” All-pass filters don’t actually attenuate frequency amplitudes directly, but rather alter the phase relationship of frequencies across the spectrum. All-pass filter stages appear in the vast majority of voltage-controlled filter topologies as well as serving as a core building block within DSP.

The normalled I/O of dåpf allows for cascaded or independent use of the two all-pass filter circuits, offering everything from classic phase-shifting to psychoacoustic stereo enhancement and synthetic Doppler effect.

• Two parallel all-pass filters
• Independent attenuverters for voltage control
• 1-Pole/2-Pole configuration for left channel
• Cascaded normalisation
• Global 1 volt per octave tracking"


Instruō - dåpf Overview

video upload by Instruō

"This video is long... But the second half is very much optional expansion and deep dive into some theory of all-pass filters.
The first few examples are much quicker, more practical examples of dåpf patched.
Thanks for watching :)"
~Jason
---
00:00:00 Instruōduction
00:03:24 Overview | Stereo Enhancement
00:04:19 Stereo Enhancement - Subtractive patch sound source
00:04:55 Stereo Enhancement - Traditional stereo panning
00:06:13 Stereo Enhancement - Spectrally transparent waveshaping
00:07:22 Stereo Enhancement - dåpf inputs/outputs
00:09:42 Stereo Enhancement - Controls and CV inputs
00:10:14 Stereo Enhancement - 6dB/12dB pole switch
00:11:18 Stereo Enhancement - Mono to Stereo patching
00:15:41 Stereo Enhancement - Static phase shift
00:17:32 Stereo Enhancement - Level 1: modulation
00:19:40 Stereo Enhancement - Level 2: modulation + waveshaping
00:25:02 Stereo Enhancement - Level 3: modulation + timbre
00:27:50 Vibrato Everything
00:28:17 Vibrato Everything - What is vibrato?
00:29:35 Vibrato Everything - Non-FM vibrato
00:30:22 Vibrato Everything - (tangent: sine phase)
00:31:34 Vibrato Everything - (tangent: sine spatialisation)
00:32:37 Vibrato Everything - Non-FM vibrato (sine wave)
00:34:11 Vibrato Everything - Non-FM vibrato (sawtooth wave)
00:38:42 Vibrato Everything - Non-FM vibrato (complex audio)
00:40:46 Vibrato Everything - Non-FM... FM? ...PM! (Phase Modulation)
00:43:47 Feedback Processing |"Doppler"
00:44:33 Feedback Processing |"Doppler" - Lúbadh feedback patch
00:46:38 Feedback Processing |"Doppler" - Doppler shift description
00:48:08 Feedback Processing |"Doppler" - Doppler dåpf 1pole/2-pole
00:49:20 Feedback Processing |"Doppler" - Doppler dåpf 3-pole/-4pole
00:51:28 Feedback Processing |"Doppler" - Doppler dåpf in stereo!
00:52:02 Feedback Processing |"Doppler" - Delay feedback
00:54:54 Feedback Processing |"Doppler" - Audio rate modulation
00:56:32 Building a phaser - Deep dive into all-pass filters
00:58:44 Building a phaser - Phase shift of a fundamental
00:59:41 Building a phaser - Quadrature: sine | cosine
01:00:43 Building a phaser - Drawing perfect circles
01:01:41 Building a phaser - Drawing (non-)perfect circles
01:02:16 Building a phaser - Frequency dependent phase shift
01:04:22 Building a phaser - 1V/octave tracking
01:07:40 Building a phaser - More than one sine wave
01:08:58 Building a phaser - The harmonic overtone series
01:10:19 Building a phaser - Sawtooth wave low-pass filtered (reference)
01:11:15 Building a phaser - Phase shifting harmonic overtones
01:15:42 Building a phaser - Inside a phaser
01:18:00 Building a phaser - Stereo Phaser
01:22:19 Building a phaser - uPhaser Befaco FXBoy
01:23:46 Building filters - Any-pass filter?
01:25:05 Building filters - RC low-pass filter
01:26:03 Building filters - Spectral cancellation principles
01:28:35 Building filters - APF to LPF
01:30:10 Building filters - APF to HPF
01:32:03 Building filters - Parallel dual all-pass filters
01:37:41 Building filters - Resonant filters"

And a video from Divkid:

Wow! I didn't know All Pass Filters could do this // 3 Patches with dapf from Instruo
video upload by DivKid

"I'm always striving to learn and explore with sound and music and dapf (the new Eurorack module from Instruo) certainly brought a big slap of school day into DivKid HQ. I was aware of all pass filters, getting past the funny idea that "all" frequencies pass (so what's the point?) and knowing they were use for phase shifts. What I didn't know is how core and important to filter topologies they were and how creatively useful they could be.

Some exploring later and here we are, with 3 patches that really show the power of phase manipulation. While dapf makes a fantastically chewy phaser FX unit I didn't expect it would be such a great stereo expander for a single VCO nor did I know I could be MUSICAL and totally analogue 3 operator FM/PM (like the digital Yamaha DX and Casio CZ phase/FM methods) synth."

TipTop Audio ART Modules

video upload by Luca Longobardi

"Last series of tests before the imminent commercial release of the Tiptop Audio ART modules.
In this session, of which I recorded a small jam, I configured the system so as to have a good comparison on polyphony tracking.

One of the two ATX1 analog oscillators (bass line) is managed via CV through the ART V/Oct Quantizer, the other analog oscillator and the digital one (Vortex) are instead managed via Midi, all via the Korg Sq-64.
The Roland S-1 is routed in the Morphagene, the Just Friends uses the Mutable Instruments Ripples Resonance to ping it on the melody line entrusted to the digital oscillator and the Pladask Elektrisk Dradd adds some glitchy vibes via its Tape function. TX-6 for delay."

Dreadbox Telepathy Bundle, the Under_thinker Patches

video upload by Dreadbox

"Some cool Patches on the Telepathy Bundle, created and produced by Under_thinker

TELEPATHY is a Full voice Analog Synthesizer Eurorack module with deep modulation options due to its multi-destination LFO and Envelope. From Bass sounds to Leads, to Drums and Drones, Telepathy has broad and versatile sound design capabilities."

'Unwind' - Ambient Reverse Tape Style Sounds on Korg Minilogue XD (Watch till the end...)

video upload by PARKER

"https://jparkersound.bandcamp.com/

All sounds Korg Minilogue XD recorded in one take

The reason I ask you to watch till the end, if you will, is because I feel the patch sounds more realistic like Reverse Tape the more I raise the filter

Enjoy

x"

Programmable Pulse Matrix + MARF Stage & Envelope Sequencing

video upload by DARK SPARKLER

"I’ve had the Programmable Pulse Matrix for over a year, but I haven’t used it very much. I decided to put it in the case this weekend and spend some time patching with it. Here I have 2 channels patched to advancing the stages of the MARF, while the other two channels are triggering the envelopes for these MARF sequences. Lots of fun rhythmic variations to be had, and could be quickly changed on a whim, but I kept it simple once I had the pattern that I liked."

Boolean Logic Latched - Patch 01 BugBrand DRM2 Drums

video upload by Precarious333 Music

"Magnetic Freak's Boolean Logic Latched is a Buchla format module featuring a clock divider and 7 logic circuits with switchable mode functionality and unique latching capabilities. Logic is hard to find in Buchla land, and as a fan I'm happy to announce its arrival. This simple patch barely scratches the surface of BLL's potential. It's more an introduction to the most basic uses of logic gates. But make no mistake, Boolean Logic Latched will be at the center of every patch I make from this point on. Intended as a companion module to Magnetic Freak's Gaussian I will endeavor to explore that companionship in videos to come. Time is short but the potentials are endless. Thus is life.

In this patch I'm using a clock from Buchla 246 into BLL's clock divider, then combining different divisions to trigger a kick/snare duo created by two of BugBrand's fantastic DRM2 analog drum voices. Simple origins lead to complex results. Everything you hear stems from that single clock input. I'm only making use of 3 of BLL's 7 logic circuits, none of its latching gates, so just a fraction of its capabilities.

Recorded as 2 tracks into Ableton Live. Compression and effects added in post."

Pic & details via Noisebug

'This is clearly the companion module of the Gaussian to generate rhythmic patterns and much more. It can nevertheless be used alone to build up complex IDM (Intelligent Dance Music) rhythmic patterns from a single ticking clock. Two stages of Boolean logic operators are cascaded allowing all kinds of operations between the incoming signals.

The latching function let you use a dedicated clock to latch the status of all gates on the arrival of a trigger signal up to the new one (or using the push button). It could be used to re-synchronises random signals. This module is fully analog and can work up to audio rates with no latency.

These modules are only produced in very small batches for connoisseurs."

White Arturia Polybrute 12 Incoming...

video upload by Dream Static Sounds

This one is in via Soviet Space Child.

Elta Solar 42 Ambient Sync with Pro 3 and TR-8S

video upload by Creative Spiral

"First experimentation with Elta Solar 42, with sync to the TR-8S drum machine, and noodling around on the Sequential Pro 3."

Tristan Perich: Pseudorandom

Infinity Gradient Trailer (for organ and 100 speakers) by Tristan Perich - Death of Classical video upload by Death of Classical

Note the above is a video of Tristan Perich's Infinity Gradient performance from March 22, 2022. You'll find details on his new book Pseudorandom, and upcoming performance further below. You might remember Tristan Perich from his 1-Bit synth featured in previous posts here.

Description for the Infinity Gradient performance above: "Composer Tristan Perich has made a name for himself creating sweeping, viscerally overwhelming soundscapes out of armies of 1-bit speakers playing synthesized sounds. We're pleased to present the U.S. Premiere of his newest work, Infinity Gradient, which takes his musical vision to the next level by combining 100 of those speakers with the soul-blasting power of all 7,069 pipes in the Miller-Scott Organ, housed amidst the magnificent Gothic architecture of Saint Thomas Church Fifth Avenue and played by the inimitable James McVinnie."



via Tristan Perich:

"Book Release + Performance at Printed Matter, Feb 29

Tristan Perich's Pseudorandom is a companion release to his circuit album Noise Patterns. The new art book is a monolithic, unabridged 1024-page printout of the 16,777,215 numbers that comprise one complete cycle of the 3-byte random number generator from Noise Patterns' code.

Originally released as a circuitboard that plays its music through a headphone jack, Noise Patterns employed randomness at the core of its sound synthesis. However, true randomness is beyond the limitations of any deterministic computer algorithm. Because a digital computer’s memory is intrinsically finite, any attempt towards randomness will eventually exhaust every possible memory value. When those values are used up, the cycle must repeat. What results is termed “pseudorandom” — an approximation of randomness, and an illustration of the vast but fundamentally limited nature of computation.

Join me at Printed Matter on Feb 29 to celebrate the book release, with a solo performance of Noise Patterns + Q&A

Tristan Perich: Pseudorandom Book Release
Thursday, Feb 29, 6pm
Printed Matter
231 11th Ave, NYC
➝ Event Info
➝ Pre-Order"

CLICK FOR MORE »

Rare R.A. Minimoog Featured in Music America Exhibit & Signed Moog Source Giveaway

via The Bob Moog Foundation

Left: Executive Director, Michelle Moog-Koussa, poses for a picture with Bob Santelli, Executive Director of the Bruce Springsteen Archives and Center for American Music alongside Herb Deutsch's R.A. Moog Minimoog at the LBJ Presidential Library in Austin, Texas.

"The Bob Moog Foundation's Executive Director, Michelle Moog-Koussa, and Board of Advisors member Francis Preve recently attended the opening of the Music America: Iconic Objects from America's Music History exhibit at the Lyndon Baines Johnson Presidential Library in Austin, Texas to celebrate the inclusion of a rare R.A. Moog Minimoog from the Bob Moog Foundation Archives.

The R.A. Moog Minimoog, which belonged to electronic music pioneer Herb Deutsch, is serial number 1094 and is one of only 210 R.A. Moog Minimoogs to have been manufactured. The synthesizer was given to Herb by Bob Moog in 1971.

The rare Minimoog synthesizer was chosen to represent Bob Moog's indelible legacy as someone who created instruments that revolutionized the face of music by bringing a brand new palette of sounds to the performing musician, as well as honor Herb Deutsch for the significant role he played in the development of synthesizers and electronic music.

Other objects in the exhibit include: Thomas Edison's wax cylinders, Jimi Hendrix's guitar, Janis Joplin's pants and letters, Dizzy Gillespie's trumpet, Arlo Gurthrie's hand-written song lyrics, and much more.

The exhibit will be at the LBJ Presidential Library from now until August 11, 2024. It will then travel to four other presidential libraries over a two-year period."

And the raffle:

"We are excited to announce that thanks to IK Multimedia, everyone who purchases a ticket for our Moog Source raffle will receive a download code for the Syntronik 2 Sorcerer!

Normally priced at $49, the Syntronik 2 Sorcerer is a virtual synthesizer built by Erik Norlander using the exact Moog Source being raffled. Following the end of the raffle on February 26th, all ticket purchasers will receive an email with download instructions.

The Source, serial number 3948, is an excellent condition vintage synthesizer signed by Bob Moog. It features rich sound quality and a technical lineage rooted in the legendary Minimoog. The Source is lauded for its sequencers, sample and hold, arpeggiator, presets, unique data wheel, and patch memory storage. The synthesizer features a mylar touch control panel, single-knob functionality, and the trademark Moog sound.

THE RAFFLE ENDS IN ONE WEEK!
Tickets for the raffle are $20 each, 6 for $100, 14 for $200, and 40 for $500. The raffle is open internationally.

As an added bonus for this raffle only, get a free 2024 Bob Moog - His Life and Work 90th Birthday Commemorative Calendar when you purchase a bundle of 6, 14, or 40 tickets. This offer is valid until the limited quantity of calendars runs out. This offer does not apply to the purchase of individual tickets."