ER-301/Neil's Getting Started Videos

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Videos 1 to 7 will look slightly different and some menus and parameters may be in different positions. Videos 8 and onward, the GUI aesthetic is firmed up all the way to current OS v0.2.23 stable. Signal flow concepts and unit usage are still the same.


General Overview

  • Overview of the GUI
  • General layout and operation
  • Basic Setup
  • Goal: Setting up a chain to process external audio with additional control using external gate and CV
  • Saving/loading a chain preset

Using the 6 Track Recorder and various Units

  • Using the 6 Track Record to record audio
  • Using the Sample Pool
  • Using Mixers
  • Using Sample Player Units with this newly recorded audio to create one-shot sample players
  • Creating and tweaking slices
  • Assigning Triggers to these sample players
  • Adding additional effects


Creating a Synth Voice with Audio File as an Oscillator

This video skips the step of recording/loading some files into the Sample pool (checkout video 2)

  • Overview of creating a synth voice using an audio file as an oscillator source
  • adding a VCA
  • adding an ADSR
  • Assigning external Gate CV to trigger the ADSR
  • Assigning external CV to control release time
  • Assigning external CV to control 1v/o pitch control
  • Implementing a vibrato to the pitch control with a VCA controlled by external CV
  • Adding a few additional effects such as clocked delay and quantizer

Sampler / Looper Overview

External Gear used: Sputnik keyboard w/ arpegiator. Pamelas Workout for arp clock and looper reset, Mic source

  • Creating a sample buffer
  • Overview of the sample recorder/ooper
  • Controlling the looper behaviour using an external CV for reset
  • how the dub fader affects overdubbing into the loop
  • the monitoring fader
  • Using another independent track with chain as an audio source
  • Using an external audio source for the loop
  • Running Multiple Loopers synchronized
  • Bonus: Adding an Envelope Follower unit to the arp 1v/o CV to slew the signal

Creating an Audio Freezer from Scratch

The goal here is to use the Sample Record (Looper) as a "poor man's Audio Freezer" and demonstrate how a traditional audio effect can be used to manipulate CV signal.

  • Using the Sample Pool
  • Using the Sample Recorder (Looper)
  • Using the Tap Tempo Unit
  • Using the Clocked Delay Unit
  • Assigning external CV sources to control various parameters
  • Running OS v0.1.5p21)
As of OS v0.2.0, you can also achieve various freezing effects using a Looper and a Manual Grains

Building an FM Synth

The goal here is to build a basic FM voice (1 modulator/1 Carrier) with external 1/v octave tracking using available units.

A phone call came in and cutoff the last bit of the vid.. the only thing i was going to add is you could go to the modulator sin osc. and modulate that with ANOTHER sin osc.. and on and on it goes down the rabbit hole! :)
  • Using Mixer Channel unit
  • Using the Sine unit
  • Using the VCA unit
  • Using the ADSR unit
  • Using the Offset unit
  • Using the Ladder Filter and Clocked Delay for effect
  • Running OS v0.1.5p22)

Parallel Audio Processing Hints

The goal here is to use multiple blocks to process signals in Parallel. Running OS v0.1.5p23)

As of OS v0.1.6prepatch11 you can now choose the audio output from the source menu instead of physically patching an output to an input. Nice!!

Custom Units Overview

A glimpse of some updates:

  • Bypass
  • Category Filter
  • Custom Units
  • How to add presets to the unit select list
  • Running OS v0.1.6pre11)
I'm so sorry I was half brain dead in this vid! Agh!

Running a Drum ROMpler, Send/Return FX, Custom Units

  • Running OS v0.1.6pre11
  • creating a master mixer, with independent sources such as a synth and drum rompler running in separate processing tracks/blocks
  • creating an FX return using an external eurorack module
  • integrating a custom unit into the chaos!
  • checking CPU usage
  • saving and recalling a quick saves

Using an internal Master CV Source

  • Running OS v0.1.6pre11
  • This is a super fast one!
  • Using multiple tracks of the ER-301 with a master internal CV source i.e.: Clock

The Poor Man's Vocoder

  • Running OS v0.1.6pre11)
  • Can a Vocoder be built out of units even if we don't have bandpass filters? (barely but it sounds interesting)
  • Modules used: Mixer Channels, Sine Osc, Envelope Follower, EQ, Ladder Filter, Quantizer, Custom Unit, Sample Looper

Creating Long Envelopes

  • Running OS v0.1.6pre11
  • How to cheat and make Envelopes longer than the current 1 second limit
As of maybe an hour after I made this video, Brian has released a patch upping the timings to 10 seconds for attack, decay and release.!!! :D So this vid is irrelevant for increasing ADSR envelope timing. However, keep in mind you can have some more interesting CV shapes and wiggles recorded... and adjusting the player speed will affect the rate of this CV data!

Using the Sample Player with prepped audio files

  • Running OS v0.1.6pre12
  • Using the Sample Player with super-short recordings

Bringing the Audio Engine to the Brink of Destruction!

  • Running OS v0.1.6pre12
  • Using the Stress unit to bring the audio engine to the brink of destruction. This probably isn't all that practical.. but it sounds cool!

Using a Sampler Player and Looper with a SHARED buffer file

  • Running OS v0.1.6pre13
  • Using a Sampler Player and Sample Looper with a shared buffer file.

An example of a Big Complex Patch

  • Running OS v0.1.6pre13
  • Using all sorts of goodies simultaneously: Loopers, Recorders, Synth Bass, Synth Arp, Keyed Gain Reduction, Send/Return to 3rd part Eurorack FX

Polysynth and Multi-tracking using Loopers

  • Running OS v0.1.6pre13
  • Poly Synth
  • Sneaky method of using the Looper!
  • Patching signals from multiple channels

Making and Saving a Utility Unit

  • Running OS v0.1.6pre13
  • This is a super quick one. How to make a basic "utility" unit and have it show up in the Unit list.

Dynamic Looper Lengths!

  • Running OS v0.1.6pre13
  • How to dynamically adjust the looper length on the fly in a musical way with nothing more than a gate signal!
  • Apologies for the shakes - i had my KB37 on my living room table and my tripod was on the table
Setup for dynamic loop lengths.jpg


More Grains + Special Guest!

  • firmware v0.2.0

More Grains

  • firmware v0.2.2
  • Using only the ER-301 with a recorded audio file
  • Units Used: Manual Grains, SIN, Triangle, S&H, Pink Noise, Limiter, Pitched Delay

Grains and Loopers

  • firmware v0.2.2
  • Using the Grains with 2 x Loopers.
  • The First Looper is to 'Grab' your incoming Audio for a specific period of time
  • The Grains the accesses this same audio buffer for manipulation
  • The Second Looper is to record (AND Overdub) the results!

Perfectly sweeping a Manual Grain Unit's File Position

  • firmware v0.2.2
  • How to perfectly sweep the sample position within a Manual Grains unit.
Instead of using the OFFSET unit, you can set the start bias to .5 to accomplish the same adjustment.

Creating a Quickly assignable Unity Mixer

  • firmware v0.2.4
  • Using a Custom Unit

Creating a weird reverb

Neil-creating-a-weird-reverb.jpg
  • firmware v0.2.4
  • Using a Looper and Grains to create a weird Reverb Effect.
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There is a potential for a feedback condition if you set the channel mixer >0db. So in ideal use you'd want the mixer section fully separate (see note in diagram).
Tip-bulb.png
Since v0.2.9+, the entire processing chain sitting on ch.2 can be realized within a Global Chain, keeping your channels clear for more immediate tasks.


Karplus-Strong Fiddles

  • firmware v0.2.9
  • Using a Noise burst and a controlled feedback delay line to make some Karplus-Strong style sounds.

Custom Units Again (PART 1)

  • firmware v0.2.13
  • I revisit Custom Units and their local controls.

Custom Units Again (PART 2)

  • firmware v0.2.13
  • overview of an elaborate self-contained processing tool
  • Recorder that updates a Grain Players Content
  • Grains with linear and random playback mode, pitch control, pitch "Freeze"
  • Grains duration control
  • Trigger stutter selection with a flipflop control of that or regular mode.. Thanks to @Joe for the framework to make this work!!
  • All recordable into a Looper with Dub and record control
  • Mute control of both functions from the front panel of the unit.

Creating a Harmonic Oscillator in a Custom Unit

  • firmware v0.2.13
  • overview of a self-contained harmonic oscillator with maybe one additional bonus

Advanced Custom Unit Control

  • firmware v0.2.13
  • Going crazy with Custom controls and local routing
  • Step Sequencer with various modes
  • each step: Note memorizers, Release envelope, on/off state
  • synced delay with wet/dry balance
  • speed control
  • patch volume control and mute
  • Source either Sin or Looper fed Grains with freeze or sample scatter

What is a Global Chain?

  • firmware v0.2.20

Doppler Effect

  • firmware v0.2.20

Copy/Cut/Paste/To Mixer Functions + Tap Tempo Fun

  • firmware v0.2.21

Using CV-Controlled Offset

  • firmware v0.2.23