Joranalogue/Hainbach Collide 4

MUSICAL FEATURES

The origins of electronic music can be found in the early works of a small group of forward-thinking composers in the mid-20th century, who used electronic test equipment to create new sounds. Building on that legacy, Collide 4 has brought it all full circle again today.

Collide 4 is the first hardware jointly developed by musician/influencer Hainbach and Joranalogue , who utilize experimental and measuring equipment. It's a signal processor/voice module that brings the concept of a rock-in-amp to the world of Eurorack. Rock-in-amps are devices used in physics research long ago and are known for their raw power in musical applications. Now, with its extremely compact size and weight, and complete voltage control, the rock-in-amp is available to any synth player. The result is a completely new type of analog synth voice/audio processor that even pioneers of avant-garde music could never have imagined.

Collide 4 embodies Hainbach's extensive experience in exploring deep musical realms with vintage test equipment and Joranalogue's electronic instrument design philosophy.

• Taking the concept of lock-in amps to new heights using a modern, all-analog Eurorack format
• Equipped with a variable bandpass filter on the input with pinging input and transmission
• Equipped with gain stages before and after the filter, allowing amplification of up to 130dB
• Built-in sine/cosine quadrature VCO with zero through-pass, can be used as a reference signal
• Hilbert transform network allows use as a frequency shifter
• Equipped with a dual ring modulator and low-pass filter (integrator)
  
• Unique X/Y quadrature topology makes it ideal for stereo use
• The extensive output section also includes magnitude and phase outputs that are polar coordinate converted from the X' and Y' outputs by analog circuits.
• Equipped with visually appealing LED indicators that show signal level and overload.
• CV control of all parameters, pitch control with temperature compensation and excellent tracking
• Impedance compensated output and dual color LED.
• Trim potentiometers accessible from the front panel

HOW TO USE

A lock-in amplifier is a measurement and experimental device that detects the magnitude and phase of a specific frequency component from an input signal. Analog lock-in amplifiers perform multiplication and integration, so they are composed of circuits similar to ring modulators and low-pass filters in the world of synthesizers, and actual units are used by experimental musicians such as Hainbach. Collide 4 is a module that optimizes these circuits for use in a modular environment and is designed with the highest possible precision.

To achieve this goal, an analog lock-in amplifier multiplies the input signal by an oscillator (reference oscillator) with the frequency to be detected, and passes the output signal through a low-pass filter. From the DC component after passing through this filter and the phase of the reference oscillator, the magnitude of the frequency component of interest and the phase difference between the reference oscillator and the input signal can be calculated.In Collide4, rather than setting the phase of a reference oscillator, we instead use a phase-shifted signal and perform two types of multiplication to obtain the desired phase difference.

In Collide4, the final desired signal magnitude and phase can be obtained from the MAG and PHASE outputs at the bottom right, but Collide4 was designed with musical applications in mind, and the following functions are available in each section, with voltage control for all major parameters.

• input sectionAtGain Adjustment・Overdrivewithfiltering
• Through-zero FM possible, reference with out-of-phase outputOscillatorsection
• By multiplication circuitRing Modulation or Frequency Shifting,ローパスフィルタRing can be performeddetectionsection.
  In this section:
    - X' is the product of the input signal I and the reference signal X
    - Y' is the input signal multiplied by the reference signal X and Q, which is phase shifted by 90 degrees
  The two signals are integrated (low-pass filtered) to remove high frequencies.
  The X used to multiply Y can be shifted out of phase by 90 degrees using the switch at the top right. In that case, X'-Y' and X'+Y' become frequency shifter outputs with the frequency of the reference oscillator.
  

The signal flow for each section is as follows:

input section

Output section

Interface