4ms Company Dual Looping Delay User Manual Download Page 13

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Next, prepare to play a different sound. If this is your first time doing this patch, try to make this sound

distinct from the first so you’ll recognize it easily. When you’re ready to play the second sound, turn off

Inf. Hold

and play the sound. When you’re done, turn

Inf. Hold

back on, either by pressing the button

or using any of the techniques mentioned above.

Repeat this process to add more and more layers: turn

Inf. Hold

off, play the sound, turn

Inf. Hold

on.

You can control the level of each layer by adjusting the

Delay Feed

knob. Turning it down will make the

new layer more quiet. If your sound is a constant tone or drone, consider turning Delay Feed to 0

before turning

Inf. Hold

off. Then fade

Delay Feed

up. When you’re done, turn

Delay Feed

back down

to 0. This will make the new layer fade in and out.

You also can control the level of the previous layers by adjusting

Feedback

. Turning

Feedback

down

will make older layers fade out each time they’re played.

Peeling off Layers

After you’ve built up several layers, you can experiment with “peeling” them off. Make sure

Inf. Hold

on. Turn

Feedback

all the way up (110%). Press and hold

Inf. Hold

and turn

Feedback

down to 0.

Release

Inf. Hold

. You should hear the last 8 seconds of audio removed from the loop. If you recorded

exactly 8 seconds each time, then the last layer will be gone. What happens is that

Inf.

Hold

Feedback

adjusts the loop start and end times. By turning

Feedback

counter-clockwise while holding

Inf. Hold

, an earlier portion of memory is played, before you recorded the latest layer.

To peel off another layer, turn

Feedback

back to 110%, then hold

Inf. Hold

while you turn it back to 0%.

If you want to restore the layer, do the opposite motion: turn

Feedback

to 0%, hold

Inf. Hold

while you

turn it to 110%.

You also can pull out parts of a loop by turning

Feedback

less than a full turn. For example, if you turn

Feedback

from fully up to center, only the previous four seconds will be removed.

Another technique is to turn the

Time

knob. The amount I

nf. Hold

Feedback

shifts the loop is relative

to the

Time

parameter. If you turn the

Time

knob down to 1, then a full turn of

Feedback

will only shift

the loop by 1 bar.

Sound on Sound Looping #2: External Control

This is a great patch for long loops. Set a long gentle clock speed. Turn the

Time

knob to 16 (or

something slow). Turn

Feedback

to 100%,

Delay Feed

to 0%, and turn

Mix

to 50% (or to taste). Now

run audio into the

jack. Try running a melody, a percussive sequence or an evolving drone,

perhaps.

Patch a manual CV source into the

Delay Feed

jack. It can be anything that generates CV when

you activate it: a keyboard with velocity or pressure output, a manual CV knob (from the 4ms

SISM

or perhaps an envelope output that's triggered manually (by quickly tapping the

Cycle

button twice on

the 4ms

MiniPEG

EnvVCA

). When you apply CV, you will bring up the

Delay Feed

parameter

which causes audio to be recorded onto the loop.

Since

Feedback

is at 100%, the loop is infinite and everything you lay down will remain (but take care

to keep your levels not too hot or else you will eventually get clipping). A variation is to use the

Send

jack for the loop output. Then set the

Mix

knob to center and use the

Audio

Out

jack to monitor the

incoming audio.

Sound on Sound Looping #3: More External Control

In this variation, you can use one CV signal to bring in sound, and another to clear the loop or fade it

down. This requires a module that can invert and offset a CV signal, such as the 4ms

SISM

, the

Makenoise

MATHS

, or any number of CV utility modules.

Patch the previous patch, then turn

Feedback

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

Page of

Summary of Contents for Dual Looping Delay

Page 1: ...ngle channel format Stereo or mono mode Return Send becomes right channel In Out in stereo mode 87 seconds maximum delay loop time in mono or 43 seconds in stereo 48kHz 24 bit sampling rate loop recorded at 16 bit Extremely quiet low noise low jitter design 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 fe...

Page 2: ...s 3 Controls and Jacks 3 Infinite Hold vs 100 Feedback 7 Why do I hear something I played a long time ago 7 Signal Routing Using Send and Return 8 Advanced Usage 8 Loop start and stop points Trimming the loop 8 Windowing aka Scrolling or Scrubbing 8 Using CV with Windowing 9 Unquantized Time Mode and 1V Oct CV 9 Stereo and Mono Modes 10 Octave Up Down When changing Modes 10 Memory Clear 10 Quantiz...

Page 3: ...ls and Jacks Ping Button and Jack The Ping button allows you to tap the tempo to set the base clock One tap is equal to one beat The base clock can also be set by an external clock by patching it into the Ping jack The Looping Delay requires a base time which is referred to as a beat in this manual The delay loop time is mathematically related to the length of one beat If you are familiar with oth...

Page 4: ...m memory and the Dry signal is more or less what s being written to memory especially if Delay Feed is up and Feedback is down The diagram on the back of this manual page 20 illustrates the difference in signal flow when Inf Hold is on vs off Reverse Button and Jack Reverse reverses the direction that memory is read and written Pressing the Reverse Button toggles Reverse on off when the button is ...

Page 5: ...itive CV and faster as you apply negative CV Feedback Knob and CV Jack The Feedback knob sets the amount of signal read from memory to be written ahead in the future On the Looping Delay Feedback ranges from 0 to 110 With no feedback knob at 0 you will hear one echo As you turn the Feedback knob up you will gradually hear more and more echoes the amount of time before the echoes go to silence will...

Page 6: ...ltage is ignored The knob and jack are added together to produce the amount of dry wet signal Input Jacks In and Return The In jack is the main audio input The Return jack has a different function in mono mode versus stereo mode See Stereo and Mono Modes page 10 In mono mode it s the audio input from the external feedback loop Typically you will patch the Send jack or a copy of the main audio inpu...

Page 7: ...ce is that when Inf Hold is on the Feedback knob has a special function windowing Hold down Inf Hold while turning Feedback to change the start and stop points of the loop see Windowing section on page 9 There is no windowing with Feedback at 100 and Delay Feed at 0 The final difference is that with Feedback at 100 and Delay Feed at 0 there is the ability to fade in new sounds layers by fading up ...

Page 8: ...op start point in order to make the loop the new length If you hold down the Reverse button while changing Time you will change the loop end point Therefore you can change a loop that s 4 beats long into one that s 5 beats long in two different ways adding a beat to the end or to the beginning There are many creative possibilities to be explored with adding and subtracting from the beginning and o...

Page 9: ... CV jack also allows you to window using external CV control To enable the CV jack you must first manually hold down Inf Hold and turn Feedback even just a small amount The Feedback CV jack will now control the window If you turn the Feedback knob at any time without holding down Inf Hold the Feedback CV jack will no longer control the window Unquantized Time Mode and 1V Oct CV Normally the Time k...

Page 10: ...ave any sound already recorded into memory for example if you re looping or if you have Feedback set above zero and played something recently the pitch of that sound will jump up or down by an octave When changing to Stereo Mode the pitch will jump up and when changing to Mono Mode it will jump down This can be used as a special effect but if you don t want to hear this effect clear the memory bef...

Page 11: ...ly clear themselves out Using the Looping Delay with External Clocks Whenever possible use the Looping Delay as a the clock source by patching out of the Clock Out jack to your other clock modules However sometimes you have to clock the Looping Delay with another source in which case you would patch the external clock into the Ping jack There are many issues with clock sync that arise from using d...

Page 12: ...ange smoothly not stepping through quantized pitches Now plug a 1V octave keyboard or sequencer output into the Time CV jack Plug the velocity output or an envelope output that s triggered by each step of the sequencer into the Feedback jack Turn down the Feedback knob so that the velocity pressure or the envelope make the Looping Delay create individual notes You can also patch into Delay Feed to...

Page 13: ...n pull out parts of a loop by turning Feedback less than a full turn For example if you turn Feedback from fully up to center only the previous four seconds will be removed Another technique is to turn the Time knob The amount Inf Hold Feedback shifts the loop is relative to the Time parameter If you turn the Time knob down to 1 then a full turn of Feedback will only shift the loop by 1 bar Sound ...

Page 14: ...me audio perhaps a drum loop a vocal sample or a melody line Let the audio play through make sure Mix is set at least 50 50 and then press Inf Hold to lock in the loop Listen to the loop play once or twice to get a feel for what it sounds like normally Now the trick Patch a pulse wave with variable pulse width sometimes called PWM from your favorite LFO or clock module to the Reverse jack The 4ms ...

Page 15: ...ort This is the factory default It s safe to connect the jumper to only one pin System Settings Mode System Settings Mode allows you to change the way some features of the Looping Delay behave For novice users these are not necessary to modify but advanced users may wish to explore It s recommended that new users get familiar with the Looping Delay operation using default system settings before ma...

Page 16: ...h clipping Crossfade Time Hold down Reverse while turning Time to 1 4 6 8 10 12 or 16 to set the Crossfade Time CFT Time at 1 CFT will be 0ms cross fading disabled Reverse will periodically flash once Time at 4 CFT will be 2ms Reverse will periodically flash twice Time at 6 CFT will be 4ms Reverse will periodically flash three times Time at 8 CFT will be 8ms Reverse will periodically flash four ti...

Page 17: ...riodically flash twice Time at 8 Accept all clock pulses ECD Disabled Ping will periodically flash three times Time at 11 Moving average of the past 2 clock periods Ping will periodically flash four times Time at 16 Linear average of the past 4 clocks Ping time only updates every 4 clocks Ping will periodically flash five times The Looping Delay has a very precise and jitter free internal clock le...

Page 18: ... blinks erratically then the audio is too loud or too quiet If it blinks regularly with equal times on and off then the audio level is ideal A good way to set the level is to start with the volume all the way down and notice the the light is off Then slowly bring it up until it flashes regularly about four times per second with equal times on and off 7 If there s an error the Reverse light will st...

Page 19: ...ndicate the firmware version The Ping light will then flash repeatedly Hold down the Ping button for five seconds until it turns on solid Release Ping The Looping Delay has now been reset to its factory default settings Power off Technical Specifications 16 HP Eurorack format module 0 98 25mm maximum depth with power cable Power consumption 12V rail 125mA max 12V rail 45mA max 5V rail not used Aud...

Page 20: ...Variable size tape loop moving at constant speed Reverses direction of tape Time makes loop longer or shorter by changing start point of loop Hold down Reverse while turning Time to change end point Holding down Inf Hold while turning Feedback knob changes start and end point of loop simultaneously Windowing or Scrubbing OFF ON Inf Hold Loop Mode Delay Mode Inf Hold Inf Hold Inf Hold Time Time Fee...

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