alófono

Alófono is a term used in linguistics to describe different phonetic realizations of the same phoneme. A phoneme is the smallest unit of sound that can distinguish meaning in a language, while alófonos are the variations of that sound that do not change the meaning of a word. For example, in English, the /p/ sound in "pin" is aspirated, meaning a puff of air follows it, while the /p/ sound in "spin" is unaspirated. Both are considered alófonos of the same phoneme /p/ because they do not change the meaning of the words.

The specific alófonos used in a language are often determined by their phonetic environment. This means that the surrounding sounds influence how a particular phoneme is pronounced. For instance, the pronunciation of a vowel might change depending on whether it is followed by a nasal consonant like /n/ or /m/. These environmental factors are called coarticulation. Speakers of a language typically produce and perceive alófonos automatically, without conscious effort, and are usually unaware of the variations.

The study of alófonos is crucial for understanding phonology, the branch of linguistics that deals with the sound systems of languages. Identifying alófonos helps linguists describe the precise sound patterns of a language and how these patterns contribute to meaning. Conversely, a sound that is an alófono in one language might be a distinct phoneme in another, thus changing the meaning of words. For example, the unaspirated /p/ in "spin" is the only /p/ phoneme in some languages, making the distinction between aspirated and unaspirated /p/ a significant difference in meaning.