Further to Paladin's fine answer, I'd just add a couple of points...

You'll probably want to lc either $line or each split character, unless you want to distinguish between upper and lower, in which case (forgive the pun) you'll need something like 'a'=>alpha, 'A'=>ALPHA in your lookup hash.

Whitespace may also be confusing to the user - certain rendering systems (HTML for instance) ignore multiple spaces, so you may want to add something like ' '=>'space'.

Cheers, Ben.

In reply to Re: Phonetic Translation by benn
in thread Phonetic Translation by ellem

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