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the

SISM's

Shift knob up to about 2:00. Patch the

SISM

channel's output to the

Looping Delay

’s

Feedback

CV jack.

Now you can activate the “record” CV like in the previous patch to lay down new material, but you can

also activate the “clear” CV to fade out material from the loop. You can even activate both pads at the

same time to replace loop material with new material.

What's happening in this patch is that the

SISM

is turning the 0V to 5V signal (or 8V or whatever the

maximum) from the pad module into a 5V to 0V signal. So, the

SISM

will output around 5V if you are

not pressing on the manual pressure pad (no CV signal). This means the

Looping Delay’s

Feedback

will be 100%. As you press on the pad and increase the voltage from the pad module, the

SISM

will

decrease its output voltage, which decreases the

Feedback

parameter. When

Feedback

is low,

material from the loop fades away.

Note that if your loop is not looping at 100%, then the

SISM's

Shift knob needs to be turned up a bit.

This insures at least 5V is coming out of the

SISM

when nothing is being input.

Granular Scrubbing

A really neat effect can be obtained by changing the

Reverse

jack to respond to gates, and patching a

PWM pulse wave into it.

This allows you to scrub across “grains” in an audio loop at variable playback

speed without changing the pitch.

First, enter

System Setting Mode

and set the

Reverse

jack to

Gate

Mode

(See

System Settings Mode

page 16). Then patch audio into the

jack and take the output from the

Audio

Out

jack. Tap a slow

tempo, maybe one second, and set

Time

so the loop time is a couple seconds. Turn

Feedback

down

and

Delay Feed

up. Play some 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

QCD

with the

QCD Expander

work nicely by using

the Gate PW knob to adjust pulse width. You can also use the

EOR

EOF

output from the any of the

4ms

EnvVCA

modules and use the ratio of Rise and Fall sliders to set the pulse width. The frequency

should be between about 2Hz and about 20Hz.

At first, set the pulse width to about 60-70% or so. You should see the

Reverse

light flicker, and the

loop should immediately start playing slowly forward or backwards. Tap the

Reverse

button to make it

play the other direction. Change the LFO’s pulse width to adjust the playback rate. As you approach

50%, the loop will slow down, until it hovers at 50% and then starts playing back in the opposite

direction.

The frequency of the VCO changes the “grain” size. At 2Hz there is a noticeable “stutter”, and at 20Hz it

sounds like a medium/low fidelity granular effect. If the VCO is too fast or if the pulse width is too

extreme, the effect will be lost.

The reason this effect works is because it plays forward when the pulse is low and backwards when the

pulse is high (or vice-versa if you toggled

Reverse

with the button). So, a pulse width of 50% will

effectively hover on a single grain because it plays forward and backwards equally. But, a pulse width

of 60% will play forward for 60% of the time and backwards 40% of the time, thus slowly moving

forward at 20% speed. The makes the audio slow down to 1/5 speed without any pitch shifting.

Page of

Содержание Dual Looping Delay

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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