I try to do some type of distinctive voice, especially if there is more than one NPC present at a time, but wouldn't be confident of carrying that same voice from one session to the next.
I DM a lot of Living Greyhawk, which makes it more difficult, as an NPC could be DMed by different people for the same players. I at least try to understand the motivations and attitudes of the NPCs so that I can adopt that in my portrayal of the NPC.
Recently I ran a game (twice) which had a middle-aged male human mage described as slim, well dressed, with a well-trimmed goatee and clean, well-kept nails. He lived in an extravagant home, and the description made comment of him drinking tea in a slow, almost delicate fashion.
The module also mentioned that if one was to do an accent for him it should be upper-class british.
Upon reading that description I decided to take it one step further, giving him a lisp and an effeminate nature (eg, deliberate pause when talking about his "friend").
As an openly gay man myself (with not lisp and not noticably effeminate), I wasn't worried the players (all who I know reasonably well anyway) would be offended, and in fact it brought some light humour to the scene, which was fine.
But back to the original question. Does anyone know of any particular methods allowing one to write down a style of voice to be referred to later? I could write down accent, etc, but just wondering if there is something more official, maybe something a voice actor might use.
Thanks,
Duncan