RYK Modular Night Rider

MUSICAL FEATURES

Night Rider is a 4-channel filterbank/resonator with modulation sequencer.

Combining 4 multi-mode filters that can control multiple parameters in an integrated manner with a 6-stage modulation sequencer creates sweeps reminiscent of 70's phaser filters, and reproduces vocal formant creaking and wheezing. , Carplus Strong, Filter Pinging, and many other effects in stereo.

• Four filter blocks consisting of multiple models:
  • 6dB BPF [Pingable]
  • 12dB BPF [Pingable]
  • 12dB variable width BPF
  • Comb Filter for Car Plus Strong
  • All Pass filter
• Dual input/stereo output
• Pan control for each filter in the stereo field
• Input works in mono [CH1 - 1,2,3,4] or stereo [CH1 - 1,2 CH2 - 3,4]
• Modulation sequencer with clock, scan and intervention
• Sequencer interpolation scanning, 1V/Oct frequency offset, slew amount,
  Resonance amount, clock or MIDI clock input for sequence animation, CV input for MIDI CC
• Memory slot for storing and retrieving filter and animation settings, preset formants, code-based filter settings, etc.

HOW TO USE

Interface

Filter bank

The four main filters in Night Rider operate as one of the following depending on the filter type setting described below: 6dB BPF [Pingable], 12dB BPF [Pingable], 12dB Variable Width BPF, Carplus Strong Comb filter, or All Pass filter (each filter has the same function). All modes except ALL PASS [APF] , which uses a series combination , use a parallel combination.

The per-filter parameters that can be adjusted are frequency, volume and stereo position.The top row of the display is indicated by Filter 1, followed by Filter 2, and so on with red LEDs across the display.Depending on the parameter being edited, the display of these red LEDs will change.

Use the 4 encoder knobs on top of the module to adjust the frequency or level of the 4 filters.Clicking on any knob toggles between frequency adjustment and level adjustment.Triple-click any knob to adjust each filter's pan position within the stereo field, and click again to return to frequency/level adjustment. To control the frequencies of all four filters simultaneously,'Next ●Hold the ' button and turn one of the upper encoders, or turn the F CV attenuverter without patching.

When editing FREQUENCY :

When editing the LEVEL :

The 5 bright LEDs to the right of the Level bar indicate that the filter is entering the saturation clipping region.Set the level to a value lower than the 5 clipping LEDs for a clean sound without distortion.

During PAN editing:

If resonance or feedback is set to a high value using RES CONTROL or RES CV INPUT , the filter may suddenly increase the signal's volume by matching the strong harmonics of the original signal. If this results in unintended saturation, lower the filter level.

Modulation sequencer

Night Rider's modulation sequencer section consists of 1 stages of animation, one for each filter.Filter frequency, filter level and panning per stageYou can set the.
By animating the sequencer from one stage to another, the parameter changes from one value to another.SLEWHigher values ​​create a glide in frequency changes, lower settings make frequency and level changes quicker.

The row of six green LEDs at the bottom of the display indicates the current stage position of the modulation sequencer. The sequencer's stage position can be moved using the 'Next ● ' and 'Prev ●' buttons, or via an external clock or MIDI clock via CLK/MIDI Input . The stage position can also be moved and interpolated using the POS knob or external CV via POS Input .

The maximum and minimum sequencer stage positions areSEQUENCE RANGECan be set in options.
If you use an external clock to trigger your sequencer (MIDI or analog),SEQUENCE CLOCK DIVISIONYou can use the settings to divide the timing.
To adjust the direction of movement of the sequencer,SEQUENCE MODETake advantage of options.

Stage edit mode

' PREV ● ' buttonBy pressing and holding for about 1 secondSTAGE EDIT MODEActivate (stage edit mode).Indicated by a single flashing green LED, this mode allows you to edit individual sequence stages even while the modulation sequencer is running.This mode exits after a few seconds of inactivity on the filter knob.

Setting mode

In setting mode, you can set the filter type and sequencer. By holding down 'PREV ●' and operating the upper encoder knob, you enter the setting mode, and the setting target is determined by which knob you operate.

KNOB 1: Filter type

Select the filter type you want to use.

• 6db BPF: This is a bandpass filter with variable resonance.You can 'ping' the filter by increasing the resonance setting.You can use pulses and clocks as audio inputs to create sounds like bongos and xylophones.All bandpass filters are also suitable for creating vocal formant sounds.
  
• 12db BPF: A bandpass filter with a narrower sound, variable resonance, and a steeper slope.This type can also be used for 'ping' by increasing the resonance value.
  
• Variable Width BPF: A bandpass filter with variable bandwidth (RES CONTROL).The width setting gives a more subtle, less extreme bandpass effect.
  
  
• Karplus-Strong style Comb Filter: Variable feedback (RES CONTROL), a filter based on a delay line.By setting the feedback to a high value and exciting the filter with short noise blips or strong overtone pulses, it produces a physically modeled string-like sound.Note that sudden changes in frequency may cause unexpected artifacts.
  
  
• All Pass Filter 1 [delay-line based]: A delay-line based comb filter (RES CONTROL).Increasing the mix of the dry signal intensifies the notches, creating a phase-shifting effect in sweeping the filter frequency.Generally, the filter frequency spacing is narrow at higher frequencies, making it suitable for complex, overtone-rich input signals.Note that sudden changes in frequency may cause unexpected artifacts.
  
  
• All Pass Filter 2 [IIR based]: IIR-based filter (RES CONTROL).Increasing the mix of the dry signal intensifies the notches, creating a phase-shifting effect in sweeping the filter frequency.Generally, the filter frequency spacing is narrow at higher frequencies, making it suitable for complex, overtone-rich input signals.This filter also pitch shifts during modulation more subtle than the delay line version.
  
  

Note that in the two All Pass Filter modes the filters are cascaded in series and the level control setting adjusts the overall level rather than the individual filters.Also, Out 2 and Out 1 output a mix of filtered signal and subtractive dry and additive dry, so no pan control is available.

KNOB 2: Sequence Clock Division

This setting subdivides the CLOCK INPUT that triggers the modulation sequencer's stage progression . For example, setting it to '4' will trigger the sequencer's progression every four clock pulses. This setting applies to both MIDI and analog clock inputs. Note that the MIDI CLOCK INPUT is pre-divided into six segments before clock subdivision is performed [because the MIDI clock is 24ppqn].

KNOB 3: Sequence Length

Sets the maximum/minimum length of the sequencer stage.Pressing the knob toggles between minimum and maximum settings.The minimum value is indicated by a left-pointing arrow, the maximum value by a right-pointing arrow, and the valid length is indicated by a solid green LED.

KNOB 4: Sequence Mode

• Forwards - A valid clock pulse causes the sequencer to advance to the right.After the last stage (max), the sequence resets to the first (min) stage.
  
  
• Backwards - Sequencer advances left on valid clock pulses.After the last stage (min), the sequence resets to the first (max) stage.
  
  
• Ping-Pong - Sequencer advances to the right on valid clock pulses. After the max stage, the sequencer flips to the left.The sequencer will repeatedly turn around each time it reaches max and min.
  
  
• Random - On valid clock pulses, the sequencer will randomly select a stage within the mix/max stage range.
  
  

MEMORY

By pressing the 'Memory ● ' button and turning either knob 1 or knob 2, you can activate PATCH STORAGE MODE , which allows you to save and load parameters for the filter bank and modulation sequence.

• KNOB 1 - LOAD PATCH MEMORY #1-19:
  
  Loads previously saved filter banks and sequencer settings.Rotate the knob to select a patch memory number, press the knob to load.
• KNOB 2 - SAVE PATCH MEMORY #1-19:
  
  Saves the current filter bank and sequencer settings.Rotate the knob to select a patch memory number and press the knob to save.

KNOB 4 - LOAD FILTER PRESETS:

You can load predefined filter settings into the current stage.
13 vocal formants and 13 chords are available.Rotate the knob to select the preset number, press the knob to load the preset settings for the current stage.

Firmware update

You can check firmware release information on the RYK Modular Firmware page.

To update, first power up the module.There are two small switches on the back of the module, 'FIRMWARE' and 'RESET'.
While holding down the FIRMWARE button, click the RESET button and release the FIRMWARE button.

Connect the module and computer with a USB B micro cable.Make sure that the cable you use at this time is a high-quality cable that supports data transfer, not just power supply.Also, the cable connects directly to the computer without going through a hub.
A USB disk named 'RPI-RP2' will appear on your computer. Copy or drag the UF2 firmware file to the 'RIP-RP2' disk.If all goes well, the disk will automatically eject and the module will reboot with the new firmware.