Measuring learner’s tone
- Open the learners’ audio, click ‘view & edit’ to enter this window.
- For Tone 1, 2, and 4, select the part containing visible tone contour and get minimum and maximum pitch values. For Tone 3, measure starting, dipping, and ending points.
In this case, the pitch range is 178Hz-244Hz.
Comparing with native speaker’s tone
Let’s compare the learner’s tone contour with the native speaker’s one. The native speaker’s tone contour of ‘兇’ is high and flat while the learner’s tone contour exhibits falling trend. In terms of pitch range, the learner’s pitch range (178Hz-244Hz) is larger than the native speaker’s (267Hz-284Hz). So, the learner pronounced Tone 1 as Tone 4 in this case.