Soundex is one technique for indexing names such that phonetic equivalents, with variations in transliterations into the local language, can be retrieved.
To address the large number of false positive results generated by the D–M Soundex, Stephen P. Morse and Alexander Beider created the Beider–Morse Phonetic Name Matching algorithm.
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Daitch–Mokotoff Soundex (D–M Soundex) is a phonetic algorithm invented in 1985 by Jewish genealogists Gary Mokotoff and Randy Daitch.
Ivor Tiefenbrun has talked about how Sondek derives from the word Soundex as each hi-fi design always ends up having its own unique identifiable and recognisable sound.