To help out, let me point you to the English phonology page on wikipedia:
https://en.wikipedia.org/wiki/English_phonology . Specifically, look into the 'Voiced alveolar sibilant', the 'z' in English. That's the sound you're looking for, as it's the one used by Raph in the linked talk.
For completeness, the vowel is the dipthong 'aɪ', pronounced like the 'i' in the word 'price', discussed on the same wiki page.