🧠Cerebite

Music & Ear

Practice in time, test your ear, and explore sound — right in your browser.

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Metronome

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Perfect Pitch Test

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Tone Generator

These tools use the Web Audio engine built into every modern browser, so timing is accurate to a few milliseconds and tones are generated cleanly at any frequency — no app required. The metronome keeps a rock-steady click for practice, the perfect pitch test tells you how well you name notes with no reference, and the tone generator plays any frequency for tuning instruments or testing speakers and ears.

Everything works with sound on phones, tablets and computers. Browsers only allow audio after you interact with the page, so each tool starts silent until you press its start or play button — if you hear nothing, check your device is not on silent mode and the volume is up.

Three tools for three different ears

Musical hearing is not one ability, and these three tools sit in different parts of it. The Metronome works on time — keeping a pulse steady is a motor and attentional skill, not a listening one, and almost everyone who practises with a fixed reference discovers they rush the easy passages and drag the hard ones.

The Perfect Pitch Test works on pitch identification with no reference note, which is a genuinely rare ability — most estimates put absolute pitch well under one percent of the general population. The Tone Generator is not a test at all but an instrument: it produces a single clean frequency of your choosing, which is what you need for tuning, for checking a speaker, or for finding where your own hearing stops.

Where to start

Relative pitch is the skill worth building

Absolute pitch, naming a note from nothing, is largely fixed by early childhood and rarely acquired later, and the evidence for training programmes promising it is thin. Relative pitch — naming any note once you have been given one — is trainable at any age and covers nearly everything absolute pitch is useful for in practice.

The practical route is to build one reference you know absolutely. Play 440 Hz on the tone generator every day until you can produce that pitch from memory, and from then on every other note is an interval away rather than a guess. That single anchor does most of the work, and it takes weeks rather than years.

Frequently asked questions

Why is practicing with a metronome so important?
Timing is the skill listeners notice first — a simple part played perfectly in time sounds better than a hard part that drifts. A metronome exposes exactly where you rush or drag, which your own ear tends to forgive. Practicing against a steady click is how that honest feedback becomes internal.
What tempo should I set when learning something new?
Slower than feels necessary — pick a tempo where you can play the passage cleanly several times in a row, even if that's half the target speed. Then raise the BPM in small steps, dropping back whenever mistakes creep in. If you're copying a song, the tap tempo feature will tell you its BPM so you know your goal.
What's the difference between perfect pitch and relative pitch?
Perfect (absolute) pitch is naming a note from sound alone, with no reference — hear a tone, say "that's an A". Relative pitch is judging notes by their distance from a reference: hearing that two notes are a fifth apart. Musicians rely on relative pitch daily; perfect pitch is the rarer party trick our test measures.
Can adults still train their ear?
Relative pitch — the genuinely useful skill — is trainable at any age, and interval recognition improves steadily with practice. True perfect pitch is widely believed to develop mainly in early childhood, and adults rarely acquire it fully. So don't be discouraged by a low pitch test score: repeat attempts usually climb, and relative skills matter more anyway.
What is the tone generator useful for?
Tuning instruments to a reference pitch, checking whether speakers or headphones reproduce low and high frequencies, hunting down rattles that only buzz at certain frequencies, and simply exploring how the 20 Hz–20 kHz range sounds. It's a curiosity and utility tool — not a substitute for a professional hearing exam.
Why don't I hear any sound when I open a tool?
Browsers block audio until you interact with the page, so every tool stays silent until you press its start or play button — that's a browser rule, not a bug. If there's still no sound after pressing play, check that your device isn't in silent mode, the volume is up, and Bluetooth audio isn't routed to another device.