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      <p>&nbsp;</p>
      <p><a href="../../SQL%20Reference/Functions/PHONETIC.htm">PHONETIC Function</a></p>
      <p><a href="../../SQL%20Reference/Functions/$SOUNDEX.htm">$SOUNDEX</a></p>
      <p><a href="../../SQL%20Reference/Functions/$CONTAINS.htm">$CONTAINS</a></p>
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      <h2>Phonetic Searches</h2>
      <p>Phonetic Searches search for rows based on words that phonetically similar 
        to the keyword criteria. The keyword is reduces to a phonetic code, which 
        is then matched to other words that share that phonetic code. This expanded 
        list of keywords with matching phonetic codes is then used as search criteria.</p>
      <p>Omnidex uses three different algorithms for phonetic searches: Soundex, 
        Metaphone and Double-Metaphone. Metaphone is a generally regarded as a 
        more advanced algorithm than Soundex, and Double-Metaphone is regarded 
        as an improvement on Metaphone. Metaphone is similar to Soundex in that 
        it reduces a word to a phonetic code, and that phonetic code is then shared 
        by all words that sound phonetically similar. Double-Metaphone differs 
        from Metaphone in that it may produce two phonetic codes for one word 
        for those cases where a word has two common pronunciations</p>
      <p><img src="../../images/note.gif" width="12" height="15">All three phonetic 
        algorithms are best suited for given names and surnames, rather than general 
        words. The rules of phonetic equivalence are quite complex, and these 
        algorithms were all designed specifically for processing given names and 
        surnames. Nevertheless, these algorithms may be used on all textual data, 
        and will usually produce satisfactory results. </p>
      <p>The Phonetic option, ;SX, will cause the data to be indexed using both 
        the word and its Double-Metaphone equivalents. Use the ;SX2 option for 
        Metaphone equivalents and the ;SX3 option for Soundex-style equivalents. 
      </p>
      <p>Phonetic searches are accomplished by using the <a href="../../SQL%20Reference/Functions/$CONTAINS.htm">PHONETIC 
        option of the $CONTAINS function</a>, or by using the <a href="../../SQL%20Reference/Functions/PHONETIC.htm">PHONETIC 
        function</a> directly in the qualification criteria. Phonetic equivalents 
        are directly accessible using the <a href="../../SQL%20Reference/Functions/$SOUNDEX.htm">$SOUNDEX</a>, 
        $METAPHONE and $DOUBLE_METAPHONE functions in SQL. </p>
      <p>&nbsp;</p>
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