The audio ring modulator multiplies a recording by a sine-wave carrier to produce metallic or robotic textures. Select a carrier frequency and wet mix after uploading your file. Processing happens on your device, and the rendered effect can be previewed and exported as WAV.

How does Audio Ring Modulator work?

Multiplying a sine tone at frequency f by a carrier at c produces components at f + c and the absolute difference between f and c. Complex sounds generate a pair of shifted components for each input component. This changes harmonic relationships rather than transposing the recording by a musical interval.

Wet Mix combines the multiplied samples with the unprocessed source. At 1 only the modulated signal remains; at 0 the original passes unchanged. Every channel uses the same carrier phase, and the output retains the source duration.

Key Features

Sine carrier selectable from 20 to 2000 Hz
Dry/wet blend from untouched to fully modulated
Common carrier phase across stereo channels
Sum and difference tones reshape harmonic relationships
No change to sample count or playback timing

Common Use Cases

When and why you might need this tool

Build a robotic voice
Process spoken lines with a midrange carrier and blend the source back for intelligibility.
Turn percussion into metallic hits
Shift a drum's components into clangorous combinations for a sound-effects library.
Explore inharmonic synth textures
Move the carrier against a sustained synth note to create unfamiliar frequency relationships.
Prepare science-fiction ambience
Render a transformed environmental recording for later layering in an editor.

How to Use This Tool

Step-by-step guide to get the best results

Select a short source

Upload a voice, instrument, or sound-effect recording to expose the modulation controls.

Tune the carrier

Move Carrier from its 100 Hz default and choose the tone range for the effect.

Blend the original

Reduce Wet Mix below 1 when you want more of the recognizable source.

Create the effect

Choose Apply Ring Modulation, listen to Audio Ready, and download the WAV when the texture fits.

Pro Tips

1
Compare several carrier frequencies on the same spoken phrase; consonants and vowels respond differently.
2
Lower Wet Mix when dialogue loses too much intelligibility.
3
Start playback quietly: new high-frequency components can sound more piercing than the source.
4
Use a sustained single note to hear the sum and difference tones more clearly than in a dense mix.

Frequently Asked Questions

What does ring modulation sound like?

It often sounds metallic, bell-like, or robotic because the original harmonics acquire sum and difference partners. The audio ring modulator's carrier controls how far those components move.

Is ring modulation the same as pitch shifting?

No. Pitch shifting scales frequencies by a ratio to preserve musical intervals. Ring modulation adds and subtracts a fixed carrier frequency, which generally changes harmonic relationships.

How do I keep a ring-modulated voice understandable?

Lower Wet Mix to restore some unprocessed speech and compare carrier settings using the same line. Fully wet modulation can obscure familiar vowel structure.