a Edith Avilés Bajaña 9 hónapja
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Még több ilyen
The consonant cluster /st/ is OK at the beginning, middle or end of words in English. At beginnings of words, /str/ is OK in English, but /ftr/ or /tr/ are not (they are ungrammatical).
Phonology also includes topics such as phonotactics (the phonological constraints on what sounds can appear in what positions in a given language)
Phonology is not just (or even mainly) concerned with categories or objects (such as consonants, vowels, phonemes, allophones, etc.) but is also crucially about relations. For example, the English stops and fricatives can be grouped into related pairs which differ in voicing and (for the stops) aspiration:
Phonemes and allophones, or sounds and their variants
They are three variants or allophones of the /u/ phoneme. The different variants are dependent on the different contexts in which they occur. Likewise, the consonant phoneme /k/ has different variant pronunciations in different contexts.
Auditory phonetics
which addresses the way listeners perceive and understand linguistic signals
Acoustic phonetics
which addresses the acoustic results of different articulations
Articulatory phonetics
which addresses the way sounds are made with the articulators