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4ms Dual Looping Delay
Firmware Version 5
Release Notes
August, 2016
Version 5 firmware for the Dual Looping Delay is a major update that adds very significant new capabilities to the unit,
as well as refinements to the features previously existing. Please take some time to read through these notes to help
you get the most out of your new and improved DLD, and avoid any confusions caused by changes to operations.
Updating to Version 5
As for previous updates, use the Audio Bootloader to install the Version 5 update, delivered as an audio wav file. You
can download this file from the 4ms web site here:
http://4mspedals.com/DLD/firmware/DLD-firmware-v5.wav
Preparation
1. Turn off system power. Connect audio output from computer, smart phone (remove the phone case to
ensure the cable can connect), tablet, etc. to the In B jack with a mono or stereo (either is fine) cable.
2. For audio monitoring, connect the Out B jack to an amp/speaker. Set a low initial volume, as the audio
data file is LOUD!
3. Set the output level of the computer or phone, and also that of your audio software to 100% volume.
Turn off all audio and vibrate notifications, and close applications such as Facebook that use audio
notification. Any disruption in the audio will ruin the process.
Updating
4. To enter the Audio Bootloader mode, depress both Reverse buttons (A and B) and the Ping button while
powering on the DLD. When you see the Channel A Hold button turn on (or blink), the DLD is ready to
receive firmware. Release all the buttons.
5. Begin playing the v5 audio wav file. Immediately you should see red Channel A Loop LED blink. The blue
light will flash from time to time as well. Do not interrupt the process! You can monitor the audio by
listening to the Out B jack.
Completing the Update
6. The audio data file for the v5 update is approximately 2 minutes in length. Just before audio finishes
playing, you will see the 3 lamps (Ping, Inf Hold A & B) flash a couple to times before the unit comes up to
its normal operation. Congratulations!
The Audio Bootloading process is very reliable, but any interruption or glitch in the audio stream will cause it to fail.
If audio stops before the end of the file and/or the lights stop blinking, an error has occurred and you should try
again.
First verify that the cable is not loose, that all sounds/vibrate/notifications are off, and that you have downloaded the
audio file completely (avoid streaming or playing from the browser).
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Related Manuals for 4ms Company Dual Looping Delay
Summary of Contents for 4ms Company Dual Looping Delay
- Page 1 August, 2016 Version 5 firmware for the Dual Looping Delay is a major update that adds very significant new capabilities to the unit, as well as refinements to the features previously existing. Please take some time to read through these notes to help you get the most out of your new and improved DLD, and avoid any confusions caused by changes to operations.
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Page 2: New Features And Enhancements
Then check that volume is at 100% throughout. Stop the audio file, reset it back to the start, and tap Reverse A button to reset. The Hold A button should light up. Play the file from the beginning again. Factory Reset after Update (recommended) Because Version 5 makes very extensive changes in the operation of the DLD firmware, we recommend that you execute the Factory Reset procedure following the update. - Page 3 New Advanced Operational Features Quantized Change Mode: Modulation ‘on the beat’ ‘Normally’, the DLD controls of Time, Reverse A/B, and Infinite Hold A/B operate as you would expect in most any device. Changes to the control take effect immediately, no matter when they occur. In the Quantized Change Mode (or ‘QCM’), any change to these parameters (on both channels) will be delayed until the next pulse of the Ping Clock.
- Page 4 Clear Channel Buffer (from Version 4) This feature is not new in Version 5, but is re-documented here as one of the ‘special’ functions that can be executed during normal operation. And it is very, very useful. To delete the contents of audio memory for either channel, just hold down the Reverse and Inf Hold buttons of that channel for about 3 seconds.
- Page 5 Systems Settings: the ‘Center-Center’ Group Variable Splice Cross Fade Time (CFT) – NEW FEATURE! When changing delay time, entering Reverse or Hold, etc., the natural behavior of a fixed-clock audio delay line such as the DLD is a discontinuity (click) in audio. The DLD suppresses these by performing a cross-fade between the points before and after the change.
- Page 6 External Clock De-jittering settings – NEW FEATURE! The DLD uses sophisticated technology so that the unit can follow an external Ping clock accurately. In most situations, the default method of the DLD will work fine without issues, and you do not need to adjust this parameter unless you are experiencing sync issues with an external clock.
- Page 7 Please note that the very best way to ensure complete synchronization without artifacts is to use the DLD as the clock master. System Settings: the ‘Center-Down’ Group – NEW FEATURES! Reverse and Hold Inputs Gate/Trigger Mode – NEW FEATURE! In all previous firmware versions, the Reverse and (Inf) Hold jack inputs toggle the state of their respective features on the leading edge of a trigger or gate.
- Page 8 loudness (logarithmically). That is to say, with Audio Taper, if the Delay Feed knob is at 50% then the audio level will be 10% (which the ear perceives as half as loud). In Linear Taper, if the knob is at 50% then the audio level will be 50%. Previous firmware version had the Delay Feed knob work with an Audio Taper, because that's preferred for most audio volume knobs since it follows the ear's natural way of perceiving loudness.
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Page 9: Auto Muting
System Settings: The ‘Up-Center’ Group (Version 4 legacy) Auto Muting Auto Mute is a noise gate that silences the input when a signal less than 5mVpp is detected on any input. This prevents runaway feedback if Feedback is turned up and the DLD is allowed to run for a long time with no input signal. - Page 10 Exiting the System Settings Mode To leave the Systems Setting mode, flip both toggle switches once again to the up position. Then hold down all 5 pushbuttons. If you hold for 2 seconds or more, all changes (as well as the current state of QCM) will be stored to memory.