Octave Identifier
Hear a note. Name the octave it lives in. Use A4 as a reference, or go reference-less for an absolute-pitch challenge.
Reference
Octaves to include
6 octaves active. Octave 4 is middle-C territory; octave 7 is near the top of the piano.
Quiz
Score: 0/0
Pick which octaves to include and whether to use a reference, then press Start quiz. The tool plays a note — your job is to identify which octave it's in.
About octave identification
Octave identification is a step beyond regular pitch ear-training. The pitch class (C, D, E …) is one part of a note; the octave (which C — the low one near 32 Hz, or the high one near 4 kHz?) is the other. With a reference note like A4, identifying the octave becomes a relative-distance problem: how far from the reference is this new note? Without a reference, octave identification is part of absolute pitch — which most people don't have but which can be approximated by anchoring on the timbre and brightness of the played tone.
This quiz lets you toggle the reference on or off. With reference: A4 (440 Hz, the standard tuning A above middle C) plays first, then the mystery note. Without reference: the mystery note plays alone — you have to commit. Pick which octaves to include based on your listening range, hit start, and click the octave you hear.
How to drill octave identification
- 01
Pick a starter range
Octaves 4 and 5 are the easiest — they're where most familiar music sits. Add 3 and 6 once you have those.
- 02
Keep the reference on
Reference mode plays A4 first so you have something to anchor against. Switch it off only when you can hit 90%+ with reference on.
- 03
Hit start, listen, click
Listen to the note, click which octave you think it's in. The tool tells you what it actually was so you can recalibrate.
Why use this octave identifier
- Pick which octaves to include (2 through 7)
- Optional A4 reference note for relative mode
- Live score keeping
- Random note + random octave each round
- Triangle-wave timbre — easier to pick out octave brightness than pure sine
- Free, private, no install
Octave identifier FAQ
Why is this so much harder than the interval ear trainer?
Identifying octaves without a reference essentially tests absolute pitch, which most musicians do not have. With a reference, it becomes a wide-interval estimation task — still harder than naming a perfect 5th but trainable.
Why does the reference note help?
It anchors your perception. Once you've heard A4, your brain can place the next note relative to it (above? below? how far?). Without reference, you have to recognise the absolute pitch height directly.
What's the timbre?
Triangle wave — harmonically simple but brighter than pure sine, which makes the octave register easier to pick out.
Are progress / streaks saved?
No — score is in-memory and resets on reload. Keeps the tool simple.
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