Frequency (phonem.) ; Phonetics (sociolinguistics) ; Sociophonetics ; Soziokulturelles Milieu; Sociocultural environment; Socioeconomic status ; Ethnizität und Sprache; Ethnicity and language; Language and ethnicity ; Transfer (languages in contact) ; Adstratum language; Adstratsprache; Interference ; Substratum language ; Regional language ; Presbyphonia; Old age (phon.) ; Voice register ; Phonische Interferenz; Languages in contact (phon.) ; Sprachkontakt (phon.) ; Interference (phon.) ; Interdental ; Spirant; Reibelaut; Fricative ; Plosiv; Okklusiva; Stop ; Allophone ; BSAE; South Africa (Black English in) ; Südafrika (engl. Sprache in) ; South Africa (English language in) ; English in South Africa ; India (English language in) ; Indien (engl. Sprache in) ; English in India ; Bahasa Malaysia; Melayu; Melaju; Betawi; Malay