If you’ve tried putting my last name, ศิลปยามานันท์, into an online translator you’ll probably notice at least one of two things. It doesn’t transliterate into “Silpayamanant.” You’ll also notice, after listening to the audio below the pronunciation is slightly different.
If you’re curious how to pronounce it, here is the Royal Thai Transliteration with tone indications (Thai is a tonal language).
L = low, M = mid, H = high
aa = long consonant
siL laH bpaL yaaM maaM nanM
And here are audio clips of my mae speaking it slowly and then normal speed for you.