module Phonetic

The Double Metaphone phonetic encoding algorithm is the second generation of the Metaphone algorithm. Its original implementation was described by Lawrence Philips in the June 2000 issue of C/C++ Users Journal.

This implementation based on the PHP implementation by Stephen Woodbridge and contains modifications of algorithm by Kevin Atkinson. @see swoodbridge.com/DoubleMetaPhone/

PHP implementation by Stephen Woodbridge

@see aspell.net/metaphone/dmetaph.cpp

C++ implementation with modifications by Kevin Atkinson

@example

Phonetic::DoubleMetaphone.encode('czerny') # => ['SRN', 'XRN']
Phonetic::DoubleMetaphone.encode('dumb')   # => ['TM', 'TM']
Phonetic::DoubleMetaphone.encode('edgar')  # => ['ATKR', 'ATKR']
# or use alias:
Phonetic::Metaphone2.encode('czerny') # => ['SRN', 'XRN']
Phonetic::Metaphone2.encode('dumb')   # => ['TM', 'TM']
Phonetic::Metaphone2.encode('edgar')  # => ['ATKR', 'ATKR']