Bilabial flap

From MedBib.com - Medicine & Nature

The bilabial flap is an uncommon non-rhotic flap. It is usually, and perhaps always, an allophone of the labiodental flap, though it is the preferred allophone in a minority of languages such as Banda and some of its neighbors.

There was no dedicated IPA symbol for this sound until recently. It was often transcribed with the ad hoc use of the extra-short diacritic, [w̆]. (It would more accurately be [b̆], since flaps are more similar to brief plosives.)

However, the 2005 proposal for adoption of the new IPA labiodental flap recommends using that symbol with an advanced diacritic for a bilabial flap:

v • d • e
Consonants
List · Table
Pulmonics Bila​bial Labio​d. Den​tal Alv. Post. Retro​fl. Pal​a​tal Ve​lar Uvu​lar Pha​ryn. Epi​glot​t. Glot​tal Non-pulmonics and other symbols [edit • talk]
Nasals m ɱ n̪ n ɳ ɲ ŋ ɴ  Clicks  ʘ ǀ ǃ ǂ ǁ
Plosives p b p̪ b̪ t̪ d̪ t d ʈ ɖ c ɟ k ɡ q ɢ ʡ ʔ  Impl.  ɓ ɗ ʄ ɠ ʛ
Fricatives ɸ β f v θ ð s z ʃ ʒ ʂ ʐ ç ʝ x ɣ χ ʁ ħ ʕ ʜ ʢ h ɦ  Eject.  pʼ tʼ kʼ qʼ sʼ
Approxim. ʋ ɹ ɻ j ɰ  Affr.  p̪͡f t͡s d͡z t͡ʃ d͡ʒ t͡ɕ d͡ʑ ʈ͡ʂ ɖ͡ʐ t͡ɬ d͡ɮ
Trills ʙ r • ʀ • Other laterals  ɺ • ɫ
Flaps / taps ⱱ̟ ⱱ ɾ ɽ • • Co-art. fricatives  ɕ ʑ ɧ
Lateral Fric. ɬ ɮ • • • Co-art. approxim.  ʍ w ɥ
Lateral Appr. l ɭ ʎ ʟ Co-articulated stops  k͡p ɡ͡b ŋ͡m
This table contains phonetic information in IPA, which may not display correctly in some browsers. [Help]
Where symbols appear in pairs, the one to the right represents a voiced consonant. Shaded areas denote pulmonic articulations judged to be impossible.
See also IPA · Vowels
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