Online Voice Changer
Change your voice live in your browser: pitch, formant, robot, radio and more, running on your mic through the Web Audio engine. A free taste of Persona, patchd's real-time voice changer, with nothing to install.
Open toolSetupAudio Diagnostic Suite
Inspect your audio devices, measure mic noise floor + dynamics, and time real round-trip latency through your speakers and mic. Runs entirely in your browser, nothing uploads.
Open toolMicMic Test
Check what your microphone is actually sending: live level, peak, noise floor, and tonal balance, right in your browser. No call to join, no account, nothing uploads.
Open toolSetupAudio Latency Test
Measure your real round-trip latency: the tool plays a click through your speakers and times how long it takes to arrive back at your mic. Honest numbers, methodology included.
Open toolMicMic Noise Floor Meter
Measure how much hiss and room noise rides under your voice, in dBFS, with the browser's auto-cleanup disabled so you see what your mic actually picks up.
Open toolReferenceBuffer Size Latency Calculator
Turn a buffer size and sample rate into milliseconds, with the full preset table and the honest note about what a single buffer stage does and does not include.
Open toolSetupTone Generator
Play a precise test tone from 20 Hz to 20 kHz: sine, square, triangle, or saw, with presets for speaker checks and hearing-range tests. Plays sound, records nothing.
Open toolReferenceEQ Frequency Chart
An interactive map of where a voice lives on the frequency axis: rumble, mud, presence, sibilance, and air, with the symptom and the standard EQ move for each band.
Open toolMicSpectrum Analyzer
See your mic as a live frequency spectrum: fundamentals, harmonics, sibilance, and the noise floor, on a log axis with peak hold and freeze. Runs in your browser, nothing uploads.
Open toolSetupStereo Channel Test
Confirm left is left, right is right, and your speakers are wired in phase, with three buttons and one honest physics trick. Plays sound, records nothing.
Open toolMicMic Monitor
Hear your own voice through the browser, with a live meter and a headphones-first warning. Also an honest demonstration of why real monitoring paths need lower latency than a browser can give.
Open toolSetupSample Rate Checker
See the sample rate your browser audio actually runs at, what your mic track reports, and how to check the device ground truth in Windows when the two disagree.
Open toolSetupAudio Device Inspector
List every input and output your browser can see, which one is the default, and why the labels stay hidden until you grant mic permission.
Open toolReferencedB Loudness Reference
The two decibel scales people mix up, side by side: acoustic dB SPL from whisper to concert, and digital dBFS from the noise floor to clipping. They do not convert, and this chart says so.
Open toolOBSWebcam Shape & Frame Generator
Give your webcam any shape (circle, hexagon, squircle and more), then style a matching decorative frame. Exports two ready-to-use PNGs for OBS.
Open toolOBSAnimated Scene Screens
Design Starting Soon, Be Right Back, and Stream Ending scenes with custom colors, animation, and an optional countdown. Exports an HTML file you drop into OBS as a Browser source.
Open toolTwitchTwitch Panel Builder
Design single profile panels or matching sets (About, Donate, Schedule, Socials and more) with shared styling, custom colors, and brand icons. Exports PNGs at Twitch's standard 320px wide.
Open toolStream DeckStream Deck Icon Generator
Build matching Elgato Stream Deck icon sets. Pick from common functions like mute, record, and scene switch, app brand glyphs, and Patchd icons; customize background, color, label. Exports square PNGs.
Open tool