Output

There is one audio output in the system, and every OUT module in a patch feeds the same left/right gain pair in front of it. Level is that gain (0 … 1). After the gain a peak meter measures the loudest sample on either channel; the editor reads it from the Brain to show the output level.

• Teensy 4.1 (the MusicBrain Brain): about 0.1 % CPU per instance (one note, default settings), measured on firmware 0.5.108.
• The browser: the editor's simulator runs the same C++ code as WebAssembly, so what you hear while patching is what the Brain plays.

Patches to play (open them in the editor from their page): 6-stemmig ladder-filter, Acid jam, SID piano (AT vibrato + comp + studio buizen), Aged and a bit tired Mellotron, CR-78-groove (Grids, zelfspelend), MS-20-ed Hammond w/ Tape Delay & Lesley, CMI + REVERB (golvend), Synthex ×8 (dramatic).

In the editor's example set: 1-stemmig (mono), 2-stemmig, 4-stemmig, 8-stemmig, 16-stemmig, 4-stemmig + aftertouch → filter, 🎺 CS-80 brass (aftertouch), 🎹 Axel F-lead (2 saws), 🎐 Ondes ×4 (Martenot-ensemble), 🕹️ SID ×3 (C64), 🕹️ SID ×6 (2 chips, stereo), 🕹️ SID ×9 (3 chips, stereo), 🕹️ SID ×12 (4 chips, stereo), 🕹️ SID 3-osc lead (mono), 🕹️ SID 3-osc ×4 (poly), 🎹 DX7 poly ×8, 🎧 Sampler ×8 (cellen), 📼 Tape strip ×8 (Mellotron), 🎹 Organ ×12 (tonewheel + Rotary), 🎹 E-piano ×12 (tine / reed), 🎛️ Synthex ×8 (Elka), 🎤 Zingende stem ×8, FOF Stem (mono), 🎧 Sampler ×8 auto-wah, 🎧 Sampler ×8 auto-wah + FET, 🎧 Sampler ×8 + EQ + Vari-mu, 🎚 Mixtur (Trautonium), 🎚 Mixtur + Plate reverb, 🖥 CMI (Fairlight-stem), 🌊 Martenot + Palme, 🌊 Martenot + Métallique, 🧪 Acid (303-stijl bas), 〽️ Fluit + FOLDER (West Coast), 🎻 Strijker + ENSEMBLE (string machine), 🦆 String + WAH (touch-wah), 🎸 String + DRIVE (overdrive/fuzz), 🔥 String + TUBE (buizenversterker), 🔔 Rings + FREQ SHIFT, 〰️ Scanned (levende golftabel), 🎲 GENDYN (stochastisch), 🫧 Excitable (prikkelbaar medium), Material Bridge (materiaalgeheugen), 💍 Rings (resonator), 🎛️ Plaits (24 engines), 💎 Elements (modaal), 🎻 STK (9 instrumenten), 🎹 DX7 (6-op FM), 🎚️ DX7 + FET comp, 🎚️ Rings + Opto comp, 🎚️ Plaits + VCA-bus, 🎚️ Elements + Vari-mu, 🎚️ STK + Program EQ, 🎚️ DX7 + Diode comp, 🎚️ Rings + Console EQ, 🎚️ Plaits + Para EQ, 🔁 Plaits + Stereo tape, 🔁 DX7 + Digital echo, 🌊 DX7 + BBD chorus, 💍 Rings + Ring mod, 🎸 STK + Octaver, 🎶 Plaits + Harmonizer, 🏛️ Rings + Plate reverb, 🪃 STK + Spring reverb, 〰️ DX7 + Tremolo, 💡 DX7 + Vibe, 🌪️ DX7 + Rotary, ✨ Rings + Shimmer, 🌀 Plaits + Stereo phaser, ☁️ Clouds ambient (+Tides), 🎲 Generative jam (Marbles), Material Bridge demo (frase), Reservoir demo (gedeelde bron), 🧪 Acid jam (Clock + Euclid + Chaos), 🌊 West Coast (Turing + Folder + LPG), 🌀 Rungler (Benjolin-stijl chaos), 🎛️ Buchla-stem (Complex + LPG), 🎚️ SEM sweep (LP → notch → HP), 🥁 Ritmebox (CR-78-presets), 🗣️ Warps vocoder, 🎶 Koor zingt woorden (vocoder), 🎤 Koor zingt jouw stem (vocoder + mic), 🎶 Koor zingt jouw woorden (vocoder + ZANG), 🥁 808 jam (Peaks), 🌌 Krell (zelfspelend), 🎹 E-piano ×12, 🪗 Organ ×12, 🎼 DX7 ×8, 🎞 Mellotron flute ×8, 🎻 Mellotron strings ×8, 🎺 CS-80 brass ×4, 🎛 Synthex ×8, 🎸 Axel F lead, 👾 SID ×3, 🔥 String + Tube, 🧪 Buchla voice, 🎚 Mixtur + Plate, 🎐 Ondes Martenot, 🖥 Fairlight CMI, 🎐 Ondes ×4, 🔁 Arp + String echo, 🥁 Rhythm box (CR-78), 🧬 Acid jam, 🌊 West Coast, 🌌 Krell, 🎲 Generative jam.

Editor: https://editor.musicbrain.nl

• The gain stages, the peak meter and the USB output are the AudioAmplifier, AudioAnalyzePeak and AudioOutputUSB objects of the Teensy Audio Library by PJRC (MIT licence).
• The MusicBrain module code is MIT licensed.

• 0.5.33: Level really sets the output volume (a shared master gain) and the output peak is reported to the editor.
• First version (May 2026): left and right inputs straight to the USB audio output.