Voiceless bilabial nasal

The voiceless bilabial nasal is a type of consonant. It is a rare sound. The letter for this sound in the International Phonetic Alphabet is ⟨⟩. The X-SAMPA symbol for this sound is ⟨m_0⟩. The English language does not have the sound.
Features.
Features of the voiceless alveolar trill: