5 Any Spanish speech variety where F is pronounced as ϕ? 2014-06-14T10:13:08.957

4 Are there languages in which two or all three of /χ/, /x/, and /ç/ are opposed as distinct phonemes? 2012-02-18T14:23:49.617

3 Anglicisation of the voiceless velar fricative [x] 2017-04-17T13:09:27.367

3 Reviewing the evidence of the spirantization of β (betacism) in Greek 2017-07-28T02:11:40.983

2 What is the nature of the voiceless velar fricative, [x], in Polish? 2016-08-28T13:49:22.097

2 Can the voiceless velar fricative, [x], be represented in Japanese? 2016-08-30T04:52:27.010

1 Australian Aboriginal Languages: Fricatives 2014-04-26T01:06:46.857

1 When does the voiceless velar fricative, [x], undergo voicing? 2016-09-01T15:20:10.930

1 Voiced fricatives are just breathy approximants? 2017-07-02T01:41:27.017

1 What does the tongue do to discriminate sibilant vs. non-sibilant? 2017-07-12T03:34:38.933