Peter Nielsen Ladefoged ( LAD-if-oh-ghid, Danish: [ˈpʰe̝ˀtɐ ˈne̝lsn̩ ˈlɛːðəˌfoːð̩]; 17 September 1925 – 24 January 2006) was a British linguist and phonetician. He was Professor of Phonetics at Unive...