They have found that word-initial consonants are, on average, around 13 milliseconds longer than their non-initial counterparts. The diversity of languages for which this effect was found suggests ...

The initial consonants differed in voicing (voiced /d/ versus voiceless /t/), place of articulation (lips /b/ versus back of mouth /g/) or manner of articulation ...

Word-initial consonant lengthening - a potential universal? "At the outset, we expected to find evidence contradicting the hypothesis that word-initial lengthening is a universal linguistic trait.

The initial consonant sounds in these words are not used in English, at least to start words. English ends words with those clusters, though: 'hats', 'chops'.

The struggle to understand the phonetics of Chinese led to the development of rime tables and the theory of 36 initial consonants, which scholars believed could help reconstruct any syllable.