Returns a four character code representing the sound of the given
String . Non-ASCCI characters in the input String are
ignored.
This method was rewritten for Axion to comply with the description at
http://www.nara.gov/genealogy/coding.html .
Parameters: s - the String for which to calculate the 4 characterSOUNDEX value the 4 character SOUNDEX value for the givenString |