BRB Audio to MIDI Env Workflow Guide

BRB Audio to MIDI Env Workflow Guide Converting audio signals into MIDI envelope data is a powerful production technique. It allows you to extract the dynamic movement of a sound and apply it to completely different instruments or effects. This workflow guide shows you how to use a basic routing bridge (BRB) setup to turn audio dynamics into flexible MIDI control data. Step 1: Prepare Your Source Audio

Your source audio dictates how your final MIDI envelope behaves. Clean signals yield the most predictable results.

Select dynamic audio: Choose tracks with clear peaks, such as drums, percussion, or plucks.

Isolate frequencies: Use an equalizer to cut unwanted low or high frequencies that might muddy the envelope detection.

Boost transient response: Apply a transient shaper or compressor to accentuate the attack and decay phases. Step 2: Set Up the Envelope Follower

The envelope follower acts as the translator, tracking the volume changes of your audio.

Insert the follower: Place an envelope follower plugin directly onto your audio track.

Adjust attack times: Set a fast attack (0–5ms) to catch sudden hits, or a slow attack to smooth out the response.

Tune release times: Adjust the release to control how quickly the MIDI value drops back to zero.

Normalize the output: Use the gain or depth controls within the plugin to ensure the modulation spans the full 0–127 MIDI range. Step 3: Route the Modulated Data to MIDI

This step bridges the gap between your audio track control and your MIDI target.

Map to a MIDI CC: Assign the envelope follower’s output parameter to a specific MIDI Continuous Controller (CC) number, such as CC 1 (Mod Wheel) or CC 11 (Expression).

Create a destination track: Create a new MIDI or software instrument track.

Configure track input: Set the input of your destination track to receive MIDI data from your source track’s envelope follower.

Arm for recording: Enable record-arm or input monitoring on the target track to verify the incoming data stream. Step 4: Map the MIDI Envelope to Parameters

Once the MIDI data reaches your target track, you can link it to almost any parameter.

Synthesizer filters: Map the incoming CC to a synth’s filter cutoff to create dynamic, auto-wah filter sweeps.

Effects modulation: Link the envelope to distortion drive, delay feedback, or reverb decay to create space that reacts to your rhythm.

Layering textures: Use the envelope to control the volume of a white noise generator or an ambient pad layer beneath your main audio track. Step 5: Capture and Refine

The final step is locking in your modulation for final arrangement and mixing.

Record the automation: Record-enable your target track and capture the moving MIDI CC data as standard automation blocks.

Smooth the curves: Use your DAW’s automation curves or MIDI editing tools to clean up any jittery data points.

Scale the boundaries: Adjust the automation scaling to limit the maximum and minimum parameters so the effect remains musical.