VUmätare

VUmätare is a Swedish term that translates to "VU meter" in English. A VU meter, which stands for Volume Unit meter, is a device that displays the audio signal level of a program. It is typically found in audio equipment such as mixing consoles, tape recorders, and sound level meters. The primary purpose of a VU meter is to provide a visual indication of how loud an audio signal is, allowing users to monitor and adjust audio levels to prevent distortion and ensure optimal sound quality.

The needle on a traditional VU meter responds to the average level of the audio signal over a short period, giving a smooth indication of perceived loudness. This is different from peak meters, which show the instantaneous highest amplitude of the audio signal. VU meters are often calibrated in decibels (dB), with 0 VU typically representing a reference level. When the needle reaches or exceeds 0 VU, it indicates that the audio signal is approaching or has reached the maximum level the equipment can handle without clipping or distortion.

In modern digital audio workstations (DAWs) and audio interfaces, digital versions of VU meters are commonly used. These digital meters often offer more flexibility and accuracy, sometimes including options for peak metering alongside VU metering. Despite the prevalence of digital technology, the concept and visual representation of the VU meter remain a familiar and important tool for audio engineers and producers to manage and control audio levels effectively.