Busca Fonetica

Alguem já desenvolveu algum tipo de algorito de busca fonetica?

http://jakarta.apache.org/commons/codec/

[list]Soundex - Implementation of the Soundex algorithm.
Metaphone - Implementation of the Metaphone algorithm.
Refined Soundex - Alternative implementation of the Soundex algorithm.
Double Metaphone - Alternative implementation of the Metaphone algorithm. [/list]