comp.lang.ruby

Axel Etzold

9/3/2008 4:01:00 PM

-------- Original-Nachricht --------
> Datum: Wed, 3 Sep 2008 23:09:05 +0900
> Von: Lloyd Linklater <lloyd@2live4.com>
> An: ruby-talk@ruby-lang.org
> Betreff: Re: How to match words that rhyme?

> Here is a crude start based on an old version I wrote in Pascal. It
> should give you a place to start. (Please do not be TOO brutal in
> critique. I am new with writing Ruby algorithms. Elegance will come.)
>
> class Soundex
> def soundsAlike word1, word2
> soundex(word1) == soundex(word2)
> end
>
> def soundex w
> w.upcase!
> temp1 = w[0,1]
> 1.upto(w.length - 1) { |i|
> case w[i, 1]
> when 'B','F','P','V'
> temp1 += '1'
> when 'C','G','J','K','Q','S','X','Z'
> temp1 += '2'
> when 'D','T'
> temp1 += '3'
> when 'L'
> temp1 += '4'
> when 'M', 'N'
> temp1 += '5'
> when 'R'
> temp1 += '6'
> end
> }
> i = 1
> while i < temp1.length - 1 do
> if temp1[i] == temp1[i + 1]
> temp1[i] = ''
> else
> i += 1
> end
> end
> temp1
> end
> end
>
> s = Soundex.new
> p s.soundsAlike('their', 'there') # returns true
> --
> Posted via http://www.ruby-....

Another solution, which could help the problem of non-phonetic writing in English is to use
the external text-to-speech program espeak:

http://espeak.source...

It can produce a kind of phonetic writing for English like so:

axel@alecrim:~$ espeak -v mb-en1 'dough' > res
axel@alecrim:~$ cat res
d 65
@U 294 0 103 80 77 100 77
_ 263
_ 1
axel@alecrim:~$ espeak -v mb-en1 'tough' > res2
axel@alecrim:~$ cat res2
t 100
V 129 0 103 80 77 100 77
f 142
_ 263
_ 1
axel@alecrim:~$ espeak -v mb-en1 'bow' > res3
axel@alecrim:~$ cat res3
b 65
@U 294 0 103 80 77 100 77
_ 263
_ 1

... this works also in other languages for which the correspondence between pronounciation and
spelling isn't one-to-one, e.g., French:

axel@alecrim:~$ espeak -v mb-fr1 'eaux' > res4
axel@alecrim:~$ cat res4
o 202 0 103 80 77 100 77
_ 263
_ 1
axel@alecrim:~$ espeak -v mb-fr1 'o' > res5
axel@alecrim:~$ cat res5
o 202 0 103 80 77 100 77
_ 263
_ 1


espeak has many "voices" for different languages. For the above to work, you'll need to choose Mbrola
voices, because the text-to-speech system Mbrola (http://tcts.fpms.ac.be/synthesis/m...) needs
this phonetic text as input.

Best regards,

Axel



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