Subscribe to Our Youtube Channel
Summary of Contents for Rossum LINNAEUS
- Page 1 LINNAEUS Thru-Zero State Variable Filter Operation Manual _090119_v05 Copyright 2019 Rossum Electro-Music LLC www.rossum-electro.com...
-
Page 2: Table Of Contents
Contents 1. Introduction 2. Module Installation 3. Overview 4. Basic Functionality 5. Make Some Noise! 6. Main Filter Settings 7. Linear Filter Modulation 8. Ping Mode 9. Updating Software 10. From Dave’s Lab 11. Acknowledgements... -
Page 3: Introduction
Rossum Electro-Music Linnaeus Thru-Zero State Variable Filter. This manual will give you the information you need to get the most out of Linnaeus. The manual assumes you already have a basic understanding of synthesis and synthesizers. If you’re just starting out, there are a number of good reference and tutorial resources available to get you up to speed. -
Page 4: Module Installation
2. Module Installation As you will have no doubt noticed, the rear of Linnaeus is a circuit board with exposed parts and connections. When handling Linnaeus, it’s best that you hold it by the edges of the front panel or circuit board. It’s not particularly easy... -
Page 5: Overview
Following in the tradition of Evolution and Morpheus, Linnaeus represents yet another Dave Rossum innovation in filter technology. Linnaeus is a stereo state variable filter that provides the unique ability to linearly modulate its resonant frequency through zero into negative frequency, while maintaining stability. - Page 6 Q (Resonance) exponentially voltage- > raised the possibility of alternative behavior controllable from 0dB to greater than that would let Linnaeus function as a self- 60dB via 6dB/V and attenuverted CV contained (i.e., no input required) stereo inputs. oscillator and/or percussion voice with some Continuously variable response really powerful timbral capabilities.
-
Page 7: Basic Functionality
4. Basic Functionality Before we jump into individual functions in detail, let’s take a quick look at Linnaeus’s controls. The control functions described NOTE: below reflect the main Linnaeus firmware. Check out Chapter 8 for the alternate control functions in Ping Mode. - Page 8 MOD INDEX MODULATION (LINEAR MOD INDEX VCA) OSCILLATOR WAVE Sets the degree to which the Selects the output wave internal Modulation Oscillator of the internal Modulation plus the External Linear Oscillator. Continuously CV input affects the filter variable from Off through frequency.
- Page 9 INPUTS & OUTPUTS Stereo, DC coupled inputs and outputs. 20V p/p max level. The left input is normalled to the right input. Linnaeus can process a stereo NOTE: signal or two independent mono signals. While the two channels share the filter’s cutoff/resonant frequency, the filter...
-
Page 10: Make Some Noise
Given Linnaeus’s complement of knobs and assigned to the initially selected response. mod inputs, experimentation is the order of Adjust Frequency and Q and listed to the the day. - Page 11 Turn on Mod Oscillator Track (if it isn’t > already on) and adjust filter frequency. The inherent timbre should remain consistent as the pitch of the ringing changes. With the same settings, try different input > audio and Q settings and note the results. Thru-Zero Linear Frequency Modulation Modulation (brought to you by The Department of...
-
Page 12: Main Filter Settings
6. Main Filter Settings At its core, Linnaeus is a superb state FREQ CV variable filter. In this chapter, we’ll look at the The Freq CV input is an main filter and modulation settings. In the exponential control voltage following chapter, we’ll look at its unique input that is modified by its thru-zero modulation functions. - Page 13 Q CV While the control has blue tick marks NOTE: surrounding it (implying discreet settings), The Q CV input is an the response actually transitions smoothly and exponential control voltage continuously from one response to another. input that is modified by its The pure bandpass and notch responses are associated attenuverter and found at their specific tick marks, but the rest...
- Page 14 Q. attenuverter and Linnaeus is capable of providing an extremely then summed high level of resonance. As previously with the value mentioned, its maximum resonance is in of the Response excess of 60dB, compared to the maximum control to determine the final response.
- Page 15 If, when you turn off both Enable NOTE: controls, the Response/Q Comp knob is at a position that does not correspond to the current Q Compensation setting (as will often be the case if you’ve been using the control to select Response), the Q Compensation setting will not immediately jump to the setting associated with the knob position.
-
Page 16: Linear Filter Modulation
7. Linear Frequency Modulation As we said in the previous chapter, Linnaeus INDEX CV is, at its core, a superb state variable filter. But The Index CV input is a its thru-zero linear FM capability truly sets control voltage input that is... - Page 17 Mod Oscillator’s frequency for the timbre of your choice. You can now use the frequency control CV to drive the frequency of both the input and Linnaeus in parallel while maintaining your chosen timbre. Although we won’t be discussing...
-
Page 18: Ping Mode
Ping Mode is an optional functional mode for LED will flash to indicate this. Double-clicking Linnaeus that allows it to be used as a sound the button will toggle Ping Mode on and off. source (oscillator) without the need for any... - Page 19 Ping Mode Setup While in manual Ping Mode, NOTE: triggers or gates (or, in fact, any audio) Pressing and holding the Track/ button patched to the corresponding audio input(s) will allow you to view and adjust the various will also generate pings. Ping Mode setup options.
- Page 20 Any signal at the input of a channel control the frequencies of both the external > assigned to Manual/External Ping Mode signal source and Linnaeus with the same full will be converted to triggers which will level CV. ping the filter.
-
Page 21: Updating Software
Right Response CV Enable LEDs will To display the software version currently turn green. Press Track to reboot using the in your Linnaeus, press and hold the Right new software. Response Enable button. After about 2 seconds, the top 4 LEDs will display the If an error occurs, both the Left and Right software version in binary. - Page 22 However, here are some caveats: If you are streaming the file directly from > the web, be sure that your data rate is sufficient to keep up. If necessary, wait until the file has been completely buffered before starting playback. If you are playing the file from a computer >...
-
Page 23: From Dave's Lab
Rossum Electro module is accidentally plugged in backwards, no stress is placed on the +5V supply or... -
Page 24: Acknowledgements
11. Acknowledgements A number of wonderful people generously provided help, advice, encouragement, and inspiration during the development of Linnaeus. Many thanks from the Rossum Electro-Music team to: Patrick Aurelio András Eichstaedt Nancy Enge Reek Havok Mihai Ionescu Kurt Kurasaki William Mathewson...
Need help?
Do you have a question about the LINNAEUS and is the answer not in the manual?
Questions and answers