Subscribe to Our Youtube Channel
Related Manuals for Electronic Audio Experiments Prismatic Wall
Summary of Contents for Electronic Audio Experiments Prismatic Wall
- Page 1 Technical Manual Prismatic Wall Document Rev A Firmware v1.0 June 28, 2024 John W Snyder...
- Page 2 And thus I found a niche. Many months of research, exploration, prototyping, failure, and joy culminated in a resonator of our own: Prismatic Wall. Many kind people offered their wisdom and insights on this project. The digital control...
-
Page 3: Table Of Contents
Contents 1 Introduction 2 Setup 2.1 Power ..........2.2 Signal I/O . -
Page 4: Introduction
We also included some suggested settings for you to check out. The Appendix contains information about hidden utility functions and the MIDI CC assignments. So, read on and enjoy. We’re excited to hear the sounds you make with Prismatic Wall. -
Page 5: Setup
CTRL: Multi-function jack that can be used for expression, CV, or MIDI. For more informa- tion refer to Sections 3.6 and 4. Use standard shielded 1/4” mono cables to patch Prismatic Wall into a signal chain. It can be used with amplified instruments, synthesizers, or any line level signal. Note that the... -
Page 6: Controls
Section 6. We also have a quick reference guide available on our site. Figure 1: Prismatic Wall main panel. A) The Tune control is the heart of the pedal. It changes the pitch of the entire resonator bank across a four octave range. - Page 7 B) The Damping and Decay knobs change the sustain and timbre of the resonator. The Damping control changes the sustain for high frequencies, ranging from muted to metallic. The resulting brightness is scaled by the Tune setting. The Decay control changes the sustain for all frequencies.
-
Page 8: Alt Functions
3.2 Alt Functions Figure 2: Prismatic Wall alt functions. Prismatic Wall contains a handful of useful “set and forget” utility functions. To access them, long press the Aux button until the nearby LEDs begin to blink. This grants access to the following controls: •... -
Page 9: Presets
Aux button and then pressing Preset 3.3 Presets Prismatic Wall can store up to 16 presets. Three of these are accessible from the front panel, with the remainder via MIDI. Presets save all primary and secondary knob functions as well as the bypass mode, expression/morphing state, and any settings exclusively controlled via MIDI CC. -
Page 10: Morphing
Tune only) by holding the Aux button and then pressing Wave. 3.5 Morphing Prismatic Wall has the ability to seamlessly morph between two groups of settings, for dy- namic changes during a performance. First, press the Aux button to toggle into Morph mode. -
Page 11: Ctrl Jack
MIDI, which is useful if you have a MIDI controller hooked up to the CTRL jack but still wish to use expression control. 4 MIDI Prismatic Wall can be controlled via MIDI, enabling external control of every function within the pedal plus additional utility functions. 4.1 Connectivity Prismatic Wall receives MIDI through the CTRL jack. -
Page 12: Cc Messages
• Playing Prismatic Wall as its own instrument by turning Decay up and changing the pitch of the resulting drone tones Prismatic Wall works across two ranges. The range C-2 to C2 plays the pitch of the Tune control across its entire range. From C3-C7, the Tune control range is repeated. In addi- tion, the onset of a note will also trigger the Morph function, which can be configured as a triggered attack/release envelope. -
Page 13: Lore And Ephemera
Now, modeling an instrument means modeling these constitutent parts and their interactions. With some background out of the way, let’s return to Prismatic Wall, which originated out of a desire to emulate resonating metal strings. Accordingly, we chose the classic Karplus- Strong model as a starting point. -
Page 14: Resonators As A Musical Tool
Prismatic Wall turns that concept on its head—what if the resonances were intentionally selected pitches that could be manipulated? Even if we ignore the finer points of physical modeling, this gives us an intuitive understanding of this effect: it’s like a reverb that contains an abundance of tonal... - Page 15 Put another way, the EQ profile and pitch are closely linked. To sit properly in a more traditional mix, Prismatic Wall typically should match the register of the instrument that it is processing. Of course, anything goes for more general sound design purposes.
-
Page 16: Design Notes
delity, with blurry, hazy artifacts that are especially noticeable at longer Decay times. This is due to tradeoffs between the number of strings and the complexity of the string model which we will discuss below. Brief aside about the chromatic mode: we originally planned for this to be the core of the pedal. - Page 17 over the reactivity of the resonators. Though more interestingly, the harmonics produced by the overdriven preamp circuit are beyond the sampling rate of the resonator bank, especially when tuned to a lower pitch. This allows for more aliasing products to form, adding a high frequency edge to the resonators.
-
Page 18: Suggested Settings
6 Suggested Settings These settings provide a variety of starting points to get familiar with the available sounds. Once you’ve broken down the user interface, try more sophisticated morphing and LFO assignments. We’ll make some suggestions below. Resonant Echo. Here’s a nice starting point. Using the single comb mode, explore the interations of a monophonic string resonator with your playing. - Page 19 Yup, it’s a modulation effect. At lower decay and damp- ing sounds, Prismatic Wall can behave much more like a traditional modulation effect. Here we use a long, dramatic LFO sweep to get a flanger-like texture. With the Drive at max, the comb filtering of the string resonator produces a lush swirl.
- Page 20 Dramatic Sigh. A different, more melodic take on an FM- forward sound. Dial in a pitch that meshes with your play- ing and use Morph to jump between intervals. Quite dra- matic indeed. 8 Bit Dungeon. Delve into the edge cases of multiple set- tings simultaneously.
-
Page 21: A Configuration Mode
A Configuration Mode Configuration Mode is used for global utility functions as well as factory debugging. To enter this mode, apply power while holding down the Aux button. Keep it held until the LEDs begin to blink. In Configuration Mode you may perform the following actions: •... -
Page 22: C Midi Cc Assignments
C MIDI CC Assignments Table 1: MIDI CC assignments. Parameter Values 14 Bit Expression MSB 0-127 Drive 0-127 0-127 Damping 0-127 Decay 0-127 LFO Rate 0-127 LFO Amount 0-127 Tune 0-127 Mode 0-15 = Single 16-31 = Stacked Neutral 3rd 32-47 = Stacked 5th 48-63 = Chromatic 64-79 = Single+1... - Page 23 Mix Exp MSB 0-127 Damping Exp MSB 0-127 Decay Exp MSB 0-127 Rate Exp MSB 0-127 Amount Exp MSB 0-127 Tune Exp MSB 0-127 Vol Trim Exp 0-127 LFO Skew Exp 0-127 LFO Shape Exp 0-127 Drive LSB 0-127 Mix LSB 0-127 Damping LSB 0-127...
- Page 24 Document Revision History Revision Changes Original Release...
Need help?
Do you have a question about the Prismatic Wall and is the answer not in the manual?
Questions and answers