Midtfrekvensen

Midtfrekvensen, in Scandinavian usage often translated as the mid-frequency range, refers to the middle portion of the audible spectrum. It is typically defined as roughly 250 Hz up to 4 kHz, though the exact boundaries can vary by field and application. This range is especially important because it carries a large share of speech intelligibility and the core timbral content of many musical sounds. Human hearing sensitivity and perceptual emphasis also cluster around this region, making mid frequencies central to how we perceive loudness, clarity, and character.

In audio engineering and loudspeaker design, midtfrekvensen is frequently addressed with dedicated midrange drivers and carefully designed crossovers. Designers aim to achieve a coherent on-axis response by separating mid frequencies from the bass and high-frequency bands, often setting crossover points in the range of a few hundred hertz to around a couple of kilohertz. This helps minimize phase and amplitude interactions and preserves natural transient behavior and timbre.

Room acoustics and telecommunication systems are also concerned with this band. Reflections, absorption, and diffusion in the midrange can significantly affect speech intelligibility and tonal balance in a listening space. In communications, mid frequencies contribute strongly to the perceived clarity of vowels and many consonants, influencing the overall quality and intelligibility of the signal.

The term originates from Scandinavian languages; in English, midband or midrange is commonly used, with definitions that vary by context.