Phonetic Spelling Algorithms

Provides a collection of phonetic algorithms including Soundex, Metaphone, NYSIIS, Caverphone, and others. The package is documented in .

Build Status Coverage Status Downloads from the RStudio CRAN mirror DOI JOSS Status

This is the R package to support phonetic spelling algorithms in R. Several packages provide the Soundex algorithm. However, other algorithms have been developed since Soundex that can also provide phonetic spelling and test phonetic similarity.

Algorithms included

  • Caverphone
    • Original Caverphone
    • Caverphone 2
  • Cologne (K├Âlner)
  • Lein
  • Match Rating Approach
    • Encoder
    • Comparison
  • Metaphone
  • New York State Identification and Intelligence System
    • NYSIIS
    • Modified NYSIIS
  • Oxford Name Compression Algorithm
  • Phonex
  • Roger Root
  • Soundex
    • Original Soundex
    • Apache Refined Soundex
  • Statistics Canada
    • Census Modified


  • testthat
  • roxygen2
  • Rcpp
  • BH

Contribution guidelines

For more information

This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number ACI-1548562. In particular, it used the Comet system at the San Diego Supercomputing Center (SDSC) through allocations TG-DBS170012 and TG-ASC150024.


Reference manual

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1.3.10 by James Howard, 6 months ago

Report a bug at

Browse source code at

Authors: James Howard [aut, cre] , Kyle Haynes [ctb] , Amanda Hood [ctb] , Os Keyes [ctb]

Documentation:   PDF Manual  

Task views: Natural Language Processing

BSD_2_clause + file LICENSE license

Imports Rcpp, data.table

Suggests testthat, knitr, markdown, rmarkdown, devtools

Linking to Rcpp, BH

See at CRAN