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1. Soundex searches allow for irregular spellings, particularly in English.

2. Conceptual, word stem, and soundex searches are possible within the current general framework, but would take quite a bit of work.

3. While both Soundex and Metaphone algorithms solve phonetic fuzzy matching very well, no spell checking application is complete without typo correction.

4. Metaphones, like Soundex and other algorithms, use a alphanumeric code to represent the verbal pronunciation of a word.

5. As you'll recall, the Soundex algorithm also truncates each soundex code to four characters, further boosting the number of matches by ignoring the ends of long words.

6. For example, the Soundex gives the phonetically misspelled lam (L500) a different soundex code from the correct form, lamb (L510).

7. In this paper, the soundex using laser bean modulated in intensity is advanced to suppress the atmospheric noise.

8. Unlike Soundex, however, metaphone codes are built to match the linguistic variabilities of pronunciation in the English language.

9. Soundex algorithms have been used to index all US censuses from 1920 onwards, and are a staple of family history software.

10. A spell check application based on Soundex would not, therefore, offer lamb as a suggested correction for the misspelling lam.

11. As in the Soundex algorithm, the first letter is retained and the final code is truncated to four characters, although it is not padded if shorter.

12. While there are many minor variations of the Soundex algorithm, they all have scant knowledge of English spelling rules, not to mention the exceptions to these rules.

13. Unfortunately, the Soundex algorithm is a poor candidate for spell checking.

14. Line 15 constructs the Soundex by truncating the word to four characters (possibly padded with 0 characters).

15. The Soundex algorithm brings this problem on itself by failing to map the initial letter of each word to a phonetic digit.

16. Essentially, Soundex algorithms function by mapping each letter of a given alphabet to a numerical code representing its phonetic group.

17. As a consequence of this irregularity, the Soundex is not particularly well suited to spell checking in the English language.sentencedict.com

18. For a start, words that sound distinct may have the same soundex.

19. Just as different sounding words may have the same soundex, the reverse situation can also occur: words that sound identical, called homophones, may have different codes.

20. It was this state of affairs that led Lawrence Phillips to find a replacement for the Soundex algorithm, called the Metaphone.