Fact · Dictation
3.2times the close-talk word error rate
In the Ravanelli et al. 2017 figures, a single distant microphone gave a word error rate about 3.2 times the close-talking rate. The two conditions are not identical, so this is a rough ratio.
Checked against its source on October 16, 2026
- What it measures
- The close-talk figure comes from read studio speech; the distant figure comes from real recordings in an apartment with one ceiling microphone.
- How it is calculated
- 12.0 / 3.7 = 3.24, rounded to 3.2
- What it does not show
- Different speech and rooms, so the ratio is a scale indicator, not a controlled comparison.
Calculated from
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