======================================================== Sound Classes (:py:mod:`~lingpy.sequence.sound_classes`) ======================================================== .. currentmodule:: lingpy.sequence.sound_classes This module provides functions and classes to deal with sound-class sequences. Sound classes go back to an approach :evobib:`Dolgopolsky1964`. The basic idea behind sound classes is to reduce the IPA space of possible phonetic segments in order to guarantee both the comparability of sounds between languages, but also to give some assessment regarding the probability that sounds belonging to the same class occur in correspondence relations in genetically related languages. More recently, sound classes have been applied in a couple of approaches, including phonetic alignment (see :evobib:`List2012a`), and automatic cognate detection (see :evobib:`Turchin2012`, :evobib:`List2012b`). Functions --------- .. autosummary:: ipa2tokens tokens2class prosodic_string prosodic_weights class2tokens pid get_all_ngrams sampa2uni .. currentmodule:: lingpy.data.model Classes ------- .. autosummary:: Model