Using the general N64 decompressor, I got a-ton of MP3 audio sounds of the game's voice-acting.
Some of them are a bit corrupted, I think? There's a huge library of over 400 + sounds. So there it'll be a bit hard to find any corrupted sounds/voices.
In general, samples that use Conker's voice seem to have odd artifacts on them. In-fact, they seemed to be sped-up. Which suggest that the game itself may be able to change pitch and speed of certain parts of voice acting.
I would post a zip of all the audio, but it's over the max file limit, as it's around 20+ MB when zipped.
You could divide it in smaller parts, or even put them in categories (conker voices, enemy voices, NPC voices etc).
As for the samples being high-pitched, it probably is a technique to save cartridge space. A sped up sample has a smaller duration (which means smaller file size) and can be slowed down with effects to restore its intended speed and pitch.
I made the Don sound rips have named titles for reasons, I guess? I also put any multiplayer related text with (MULTI) at the end. Had to split it in two parts because too big.
I don't have any rips right now, because I'm now re-organizing them.
Also a fun fact: These's audio files may of been recorded from Robin Beanland's (If you don't know, he composed the music of Conker) computer, since it's referenced if you look thru the file as a text file. It also shows that they may of been recorded sometime in 2000.