Table of Contents
Advertisement
Quick Links
The Dual Looping Delay (DLD), designed by 4ms Company and Gary Hall, is an advanced audio processor for
creative synthesis. Not a tape or analog emulation, but a modern crystal-clear digital delay, the DLD combines
features of delay, looping, and sample-tight synchronization for powerful and dynamic sound capture and
modification. The DLD is designed to integrate seamlessly with modular timebase and sequencing devices such as
the 4ms Quad Clock Distributor (QCD), etc.
•
Two channels, each with nearly 3 minutes maximum delay/loop time at 48kHz/16-bit (option for 24-bit)
•
Extremely quiet, low noise, low jitter design
•
Stereo, cascading, or dual independent mono use
•
Delay and loop time is sync-able to a clock, or a division or multiplication of a clock
•
Infinite Hold mode for looping and windowing
•
Reverse feature for toggling direction of playback
•
Feedback ranges from 0% to 110%
•
1V/octave tracking for Resonant Delays (Karplus-Strong)
•
Wet/Dry mix output, as well as dedicated Send/Return for feedback loop
•
CV and trigger inputs for all major features
Dual Looping Delay
from 4ms Company
Eurorack Module User Manual 1.0b (2016-June-2)
For firmware version 4
Advertisement
Table of Contents
Related Manuals for 4ms Dual Looping Delay
Summary of Contents for 4ms Dual Looping Delay
- Page 1 Eurorack Module User Manual 1.0b (2016-June-2) For firmware version 4 The Dual Looping Delay (DLD), designed by 4ms Company and Gary Hall, is an advanced audio processor for creative synthesis. Not a tape or analog emulation, but a modern crystal-clear digital delay, the DLD combines features of delay, looping, and sample-tight synchronization for powerful and dynamic sound capture and modification.
-
Page 2: Basic Features
Basic features: • Two independent delay/loop channels, synchronized to a common time base • Almost 3 minutes of time per channel (2:54) in 16-bit mode, for a total of nearly 6 minutes • 48kHz/16-bit sampling rate, option available for 24-bit sampling (results in 88 seconds delay/loop time per channel) •... - Page 3 Getting started: basic patches Two channel delay: Mono input, stereo output In this patch, both delay channels will be used (Channel A and Channel B). First, patch a signal into the In A jack, and take the outputs from Out A and Out B. The signal you feed into In A will automatically be fed to In B (as long as you don't plug anything into the In B jack).
- Page 4 If you are familiar with other 4ms modules, you may be familiar with the concept of “Ping”. In the DLD, the beat is the Ping.
- Page 5 In math: Time switch up: Delay time = ([Knob x CV] + 16) x beat time Time switch center: Delay time = (Knob x CV) x beat time Time switch up: Delay time = ([Knob x CV] / 8) x beat time “Knob”...
- Page 6 Infinite Hold The DLD can operate as a delay/echo or it can play a loop. While you can make the DLD play loops by setting Feedback near or at 100%, each channel has the ability to immediately jump in and out of a special mode called Infinite Hold mode by pressing a button or receiving a trigger.
-
Page 7: Special Features
for example. Special Features Windowing aka Scrolling aka Scrubbing When Infinite Hold is on, the Feedback and Delay Feed parameters have no meaning since they are effectively at 100% and 0%. However, the Feedback knob and CV jack have been given a special purpose when Infinite Hold is on: Windowing, also known as scrolling or scrubbing. - Page 8 Patch the previous patch. Then turn Feedback B down to 0%. Patch a second manual CV source into the 4ms SISM (or other utility module). Turn the SISM's Scale knob all the way down to – (invert), and turn the SISM's Shift knob up to about 2:00. Patch the SISM channel's output to the DLD's Feedback B CV jack.
- Page 9 Signal Routing: Using Send and Return The internal signal routing of the DLD and its normal connections provide a good set of capabilities of many uses. Variations on the internal routing can be accomplished with simple patches at the front panel as well. The Send and Return jacks of each of the two delay channels are simple in function, but offer a wealth of possibilities for creative patching.
- Page 10 Cascading Delay + Cross Feedback You also can combine the previous patch's “cross-feedback” with This combination gets rather interesting. The settings of separate audio sources. In this figure, the final patch of the cross- Delay Level and Feedback of Channel A and Channel B feed is ghosted to show that it may be a path of runaway feedback will interact strongly, and it is all too easy to encounter if you’re not careful.
- Page 11 Clock Bus Jumper Clock bus is a 1:1 clock that runs along the Gate pin of the Doepfer-specified power system. Modules such as the 4ms QCD, RCD, SCM, and PEG are compatible with the clock bus system. The DLD fully buffers the bus clock and has diode protection and a pull-down resistor.
-
Page 12: Special Modes
Special Modes Firmware Version To view the firmware version, enter System Settings Mode by flipping both Time switches up (to +16) and hold down all five buttons until all the buttons and both Loop lights turn on brightly (about 8 seconds). Then, release the five buttons and look at which buttons are lit up. - Page 13 The zero-point of the CV jacks, as well as the DC offset of the audio output jacks can be adjusted. Contact 4ms@4mscompany.com if you believe your DLD needs to be re-calibrated and we will step you through the process. RAM Test Mode The DLD is static-sensitive and care should be taken to not shock the unit with static electricity.
-
Page 14: Technical Specifications
Technical Specifications • 20 HP Eurorack format module • 0.98” (25mm) maximum depth with power cable • Power consumption: ◦ +12V rail: 188mA max (jumper set to 5V) ◦ -12V rail: 48mA max ◦ +5V rail: not used ◦ Connect red stripe of power cable towards the bottom of the module, which is marked with a white stripe and the words “-12V”... - Page 15 Change Log: Version 4 (June 2, 2016) • Added Memory buffer clear • Feedback CV caps at 100% when knob is at 0 • Added more System Settings Mode features (and documented it) ◦ Gate/Triggers for clock outputs ◦ Dim the loop LEDs ◦...