Hljóðfræðilegum
Hljóðfræðilegum is the dative plural form of the Icelandic adjective hljóðfræðilegur, which translates to "phonetic" or "acoustic" in English. The term relates to the study of sound. In linguistics, "hljóðfræðilegum" would refer to aspects concerning the physical properties of speech sounds, such as their production, transmission, and perception. This contrasts with hljóðfræði itself, which is the scientific study of sound. When used in a sentence, hljóðfræðilegum would typically modify a plural noun, indicating that the noun in question is being described in terms of its phonetic or acoustic qualities. For example, one might discuss hljóðfræðilegum eiginleikum (phonetic/acoustic properties) of certain sounds or hljóðfræðilegum aðferðum (phonetic/acoustic methods). The adjective draws its root from "hljóð," meaning "sound," and "fræði," meaning "study" or "science." Therefore, anything described as hljóðfræðilegum is directly related to the scientific investigation of sound.