Audio & Media Tools
9 tools in this collection — free, instant, and private in your browser.
Audio and media browser tools bring capabilities that once required dedicated desktop software directly into your web browser — no installation, no account, no latency from round-tripping audio to a server. They are useful for musicians, podcasters, educators, developers testing audio features, and anyone who needs to generate, capture, or analyze sound on the fly.
The tools here split naturally into a few groups. Tone and frequency generators — the Online Tone Generator, Binaural Beat Generator, and White Noise Generator — produce audio signals for purposes ranging from testing speakers and hearing aids to creating ambient soundscapes for focus or sleep. The Tone Generator lets you dial in an exact frequency and waveform; the Binaural Beat Generator outputs slightly different frequencies to each ear to create a perceived beat that some users find useful for concentration; the White Noise Generator produces broadband noise that masks distracting sounds.
For musicians and performers, the Online Metronome provides a reliable click track at any tempo to keep practice consistent, while the Pitch Detector and Instrument Tuner listens through your microphone and identifies the pitch of what you play or sing, displaying its nearest note and cents deviation. The BPM tools in related categories let you convert a tempo to delay times or frequencies when setting up effects.
The recording tools — Voice and Audio Recorder and Screen Recorder — capture directly from your microphone or display without a plugin. They are practical for creating quick voice memos, recording a demo, or capturing a video walkthrough to share. The Live Audio Visualizer renders your microphone input as a real-time waveform or spectrum display, which is handy for checking microphone levels, demonstrating audio concepts in presentations, or simply exploring how different sounds look as waves.
Text to Speech converts written text into spoken audio using the voices built into your browser's speech synthesis engine, making it useful for proofreading content by ear, generating quick voice-overs, or testing how an assistive technology would read a page. When choosing between these tools, start with your goal: generating test tones or masking noise points to the generators; performing or recording music points to the metronome, tuner, or recorder; and analyzing or presenting audio points to the visualizer.
All audio & media tools
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| Tool | What it does |
|---|---|
| Binaural Beat Generator | Generate binaural beats by playing two slightly different sine tones to each ear, using the Web Audio API. Use headphones. Nothing is uploaded. |
| Live Audio Visualizer | Visualize your microphone audio as a live frequency spectrum using the Web Audio AnalyserNode. Nothing is uploaded. |
| Online Metronome | A precise browser metronome that schedules clicks with the Web Audio clock. Set tempo, beats per bar, and volume. Nothing is uploaded. |
| Online Tone Generator | Generate a pure tone at any frequency and waveform in your browser using the Web Audio API. Nothing is uploaded. |
| Pitch Detector & Instrument Tuner | Detect the pitch of any note from your microphone and see the nearest musical note and how many cents sharp or flat you are. Runs entirely in your browser. |
| Screen Recorder | Record your screen, a window, or a browser tab and download a .webm video — all in your browser. Nothing is uploaded. |
| Text to Speech | Convert text to speech using your browser's built-in speech synthesis engine. Choose a voice, adjust rate and pitch. Nothing is uploaded. |
| Voice & Audio Recorder | Record audio from your microphone, play it back, and download a .webm file — entirely in your browser. Nothing is uploaded. |
| White Noise Generator | Play continuous white, pink, or brown noise in your browser to focus, relax, or sleep. Generated locally with the Web Audio API. |
Frequently asked questions
- Do these audio tools require any software to be installed?
- No. All tools run entirely in the browser using the Web Audio API and, where needed, the browser's MediaDevices API for microphone and screen access. You will be prompted to grant microphone or screen permissions the first time you use a recording or listening tool, but nothing needs to be downloaded or installed.
- What are binaural beats and do they actually work?
- A binaural beat is a perceived tone created when slightly different frequencies are delivered separately to each ear. For example, a 200 Hz tone in the left ear and a 210 Hz tone in the right ear produces a perceived 10 Hz beat. Some studies suggest that certain beat frequencies correlate with relaxed or focused mental states, but the scientific evidence is mixed. The generator is useful for experimentation, but it should not replace medical advice for sleep or concentration disorders.
- Why can the pitch detector sometimes show the wrong note?
- Pitch detection analyzes the fundamental frequency of the loudest periodic sound it hears. Background noise, harmonics from other instruments, room reverb, or a microphone that picks up multiple sound sources can confuse the algorithm. For best accuracy, use the tuner in a quiet environment, position your microphone close to the instrument, and play one clear sustained note at a time.