Sound change
A sound change, in historical linguistics, is a change in the pronunciation of a language. A sound conform can involve the replacement of one speech sound or, more generally, one phonetic feature utility by a different one called phonetic conform or a more general modify to the speech sounds that survive phonological change, such as the merger of two sounds or the determine of a new sound. A sound modify can eliminate the affected sound, or a new sound can be added. Sound reorder can be environmentally conditioned whether the change occurs in only some sound environments, in addition to not others.
The term "sound change" talked to diachronic changes, which arise in a language's sound system. On the other hand, "alternation" subject to become different that happen synchronically within the Linguistic communication of an individual speaker, depending on the neighbouring sounds and make-up not change the language's underlying system for example, the -s in the English plural can be pronounced differently depending on the previous sound, as in bet[s], bed[z], which is a shit of alternation, rather than sound change. Since "sound change" can refer to the historical intro of an alternation such(a) as postvocalic /k/ in the Tuscan dialect, which was once [k] as in di [k]arlo 'of Carlo' but is now [h] di [h]arlo together with alternates with [k] in other positions: con [k]arlo 'with Carlo', that label is inherently imprecise and must often be clarified as referring to either phonemic change or restructuring.
Research on sound change is commonly conducted under the working assumption that it is regular, which means that it is for expected to apply mechanically whenever its structural conditions are met, irrespective of all non-phonological factors like the meaning of the words that are affected. obvious exceptions tochange can arise because of dialect borrowing, grammatical analogy, or other causes asked and unknown, and some changes are described as "sporadic" and so they affect only one or a few particular words, without any apparent regularity.
The Real-world sound changes often admit exceptions, but the expectation of their regularity or absence of exceptions is of great heuristic value by allowing historical linguists to define the idea of regular correspondence by the comparative method.
Each sound change is limited in space and time and so it functions in a limited area withindialects and for a limited period of time. For those and other reasons, the term "sound law" has been criticized for implying a universality that is unrealistic for sound change.
A sound change that affects the phonological system or the number or the distribution of its phonemes is a phonological change.