What is the correct pronunciation of the letters Z and C in Pinyin? Chinese phonology wikipedia says that Z is pronounced /ts/ and C is pronounced /tsʰ/, but several websites and videos say they are pronounced /dz/ and /ts/, respectively. Examples:
When i hear words with Z and C, I clearly hear the latter pronunciation ( /dz/ and /ts/ ). Why Wikipedia says that Z is pronounced /ts/ ? Why isn't there a consensus about the IPA transcription of these 2 letters?