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Tone Curve

Live contour

See the shape of your Thai tone

This is not a spectrogram. We only draw the pitch contour so learners can focus on the tone shape instead of all the extra sound detail.

View: Midtone reference

Midtone baseline

Set the reference pitch yourself

Manual baseline at 120 Hz.

Thai tones are relative. Drag the slider until the dashed midtone reference feels right for your own natural speaking pitch.

Reference tones

Five Thai tone guides

Reference pitch

Adjust your baseline

Midtone baseline

Set the reference pitch yourself

Manual baseline at 120 Hz.

Thai tones are relative. Drag the slider until the dashed midtone reference feels right for your own natural speaking pitch.

Compare

bpaa example

Example contour showing Mid, Low, Falling, High, and Rising bpaa tones.

Single-syllable mode overlays an idealized reference contour. Phrase mode keeps each slice at its phrase-level pitch height, so falling and rising words do not need to cross the dashed midtone baseline.

Press start, then say one Thai syllable.

Pitch: --

Try this

Say the five bpaa tones quickly

Keep the syllable the same and only change the tone. Then compare your live curve with the labelled example below.

  1. bpaa ปา Mid
  2. bpaa ป่า Low
  3. bpaa ป้า Falling
  4. bpaa ป๊า High
  5. bpaa ป๋า Rising
Example contour showing Mid, Low, Falling, High, and Rising bpaa tones.
Show debug data

Debug Data

Raw microphone pitch frames

No live debug frames yet.

This shows what the live detector heard before the teaching contour was smoothed and scaled.

Raw --
Corrected --
Raw range --
Raw detector
Corrected contour input 
Waiting for live microphone data.

Word slices

Split the contour by dip boundaries

No slices yet.

After you say a short phrase, we look for deep dips in the contour and use them as likely boundaries between words or syllable groups.

  1. Record a phrase with a small pause or pitch dip between words to see slices here.