The r row: one tap

ら行 is a tap [ɾ]: the tongue tip touches the ridge once and leaves. It is neither Mandarin l nor Mandarin r.

Three pairs

Click a cell: A = r row, B = d row.

or use the + on each cell

Minimal pairs in sentences

Two sentences side by side, differing by one sound in the same slot. Tap a card to hear the whole line, tap the highlighted part to hear just that.

R row against the d row

Both are listed because they are the usual confusion — but this corpus does not separate them acoustically.

KanaRomajiDurationVOT
らra180 ms7 ms
だda150 ms16 ms
りri210 ms1 ms
でde210 ms0 ms
るru170 ms2 ms
どdo200 ms1 ms

How to practise

The method boundary (important)

This page does not claim VOT separates ら from だ: ら 7 ms vs だ 16 ms looks split, but り 1 vs で 0 and る 2 vs ど 1 do not. Word-initial stops are easily pre-voiced, so VOT is not a stable criterion here.

No numbers are reported as evidence where they do not hold.