Some linguists restrict the double-dot subscript ⟨◌̤⟩ to murmured sonorants, such as vowels and nasals, which are murmured throughout their duration, and use the superscript hook-aitch ⟨◌ʱ⟩ for the breathy-voiced release of obstruents.
What do some linguists restrict the double-dot subscript ⟨◌̤⟩ to?
{'text': 'murmured sonorants', 'answer_start': 57}