Macumbista Behemoth Benjolin

The Benjolin is a chaotic synthesizer circuit invented by Rob Hordijk (1958 - 2022). It contains two Oscillators, a Pulse Width Modulation circuit, a Resonant Low Pass Filter and a generative pseudo-random stepped control voltage generator called the Rungler. My Macumbista Benjolin instruments add a looping switch for the Rungler patterns, an external Rungler clock input switch, and a Ring Modulator for processing external audio signals through the Benjolin. Combinations of Benjolin circuits allows for even more interesting cross-modulation possibilities. I currently offer a single Macumbista Benjolin, a double Butterfly Benjolin, and a quad Behemoth Benjolin that also includes sections to create interesting divisions of a master clock for each of its four individual Runglers. The original design of the Benjolin instrument was licensed to me by Rob Hordijk in 2012, and I continue to produce them with kind permission from Biyi Amez (Biyiblip), the inheritor of Hordijk's estate. You can contact me at MACUMBISTA at the domain GMAIL dot COM for information about my hand-crafted electronic sound instruments. ==INTRODUCTION== 0:04 More Noise Intro 1:35 Rob Hordijk (1958–2022) 2:02 Blippoo Box 2:56 Biyi Amez (Biyiblip) 3:21 Macumbista Benjolin RM (Ring Mod) 3:46 Macumbista Butterfly Benjolin RM -- 5:14 Behemoth Benjolin Jam 01 -- 6:01 Benjolin workshops with Joker Nies (Klangbureau) 7:01 Ring Modulator 8:59 BugBrand PT Delay as Hordijk Zeitgeist (PT2399 delay chip) -- 9:49 Behemoth Benjolin Jam 02 ==THE BENJOLIN== 10:20 What does a Benjolin do? 11:21 Oscillator 01 (TRI / PLS) 11:52 Oscillator 02 (TRI / PLS) 12:08 Pulse Width Modulation (PWM) 12:19 PWM: Is TRI_01 greater than TRI_02? 13:42 Resonant Low-Pass Filter 15:13 Rungler: Pseudo-random generator 15:30 Cryptography: Linear feedback shift register 15:54 3 bits = 8 possible values 17:30 Rungler pattern loop switch 20:23 Control voltage inputs -- 21:31 Behemoth Benjolin Jam 03 ==THE RING MODULATOR== 22:02 How does the Ring Modulator work? 23:31 TRI_01 as modulator 24:21 PWM as modulator 25:03 XOR as modulator 26:30 XOR pattern 27:10 XOR pattern as carrier 27:55 Control Ring Mod harmonics with Low-Pass Filter 29:21 Eliane Radigue-style 2 x triangle wave ring modulation -- 30:44 Behemoth Benjolin Jam 04 ==MODULATION POSSIBILTIES== 31:58 Four triangle wave modulation 34:11 Low-Pass Filter output as carrier -- 34:40 Behemoth Benjolin Jam 05 -- 35:15 Chaotic cross modulation -- 39:23 Behemoth Benjolin Jam 06 ==THE CLOCK DIVIDER== 40:00 How does the Clock Divider work? 41:13 External Rungler clock input 42:20 Using the Clock Divider 44:07 AND truth table 44:41 OR truth table 45:14 XOR truth table 46:09 NOT truth table 47:00 Clock Divider subharmonics ==PUTTING IT ALL TOGETHER== 48:22 Putting it all together 49:24 Voice 3 = Master clock 49:44 Voice 4 = /2 XOR /5 50:13 Voice 1 = (/2 XOR /5) AND /4 50:50 Voice 2 = ((/2 XOR /5) AND /4) OR /2 51:26 Voice 3 Ring Mod Rungler = /8 51:39 PT Delay modulated by Rungler voice 3 -- 53:46 Behemoth Benjolin Jam 07