polarity_music

Probability based Melodies - EASY

Added 2025-05-30 13:10:18 +0000 UTC

In this video, I walk through building a generative melody sequencer in Bitwig's Grid using probability logic and a custom recording system. The patch cycles through notes in a chosen scale, applies adjustable probabilities per note, and uses sample and hold to create evolving melodies. I also demonstrate how to record and loop these generated sequences in sync with the transport bar to get more structured, repeatable patterns.

Key Points:

Poly Grid Setup:
- Uses a sine oscillator with amplitude envelope.
- A Pitches module stores notes (e.g., D# minor scale, 7 notes used).
Probabilistic Note Selection:
- A clock signal scans through stored notes.
- A Probabilities module assigns likelihood to each note.
- Sample and Hold selects and holds pitches based on probability match.
Sound Shaping:
- Added saw wave, low-pass filter, and reverb/delay for tonal variation.
Recording Logic:
- Uses latch and phase comparator to trigger and stop recording at bar start/end.
- Clock One Ties module ensures recording starts exactly at bar start.
- Notes are recorded, not audio, for accurate MIDI-style playback.
Playback Logic:
- Playback is synced and looped using a trigger that lasts one bar.
Extra Features:
- Added octave shift with a 33% chance for variation.
- Optional white noise + sample and hold for modulating other parameters.
- Automatic sequence regeneration every 32 bars via transport-based trigger.