Akustisesti
Akustisesti is a Finnish adverb meaning “in terms of acoustics” or “acoustically.” It is used to describe phenomena, measurements, or performances related to sound and hearing, as opposed to aspects governed by electronics or electronics-based amplification. The term stems from the adjective akustinen (acoustic) and the adverbial suffix -isesti, and is connected with the field of akustiikka (acoustics), whose terminology traces back to Greek through the history of science.
In practice, akustisesti can qualify how something is produced or experienced. For example, in music a performer
Etymology and related terms: the word comes from akustinen, meaning acoustic, which in turn derives from akustiikka,