The word "traub" is spelled with four letters. It is pronounced as [traʊb] in IPA phonetic transcription. The first sound is the "t" sound, which is a voiceless alveolar plosive. The next sound is the "r" sound, which is a voiced alveolar trill. The third sound is the "au" diphthong, which is a combination of the "a" and "u" sounds. The last sound is the "b" sound, which is a voiced bilabial plosive. Together, these sounds make up the word "traub."