Which term refers to the measure of volume in audio signals?

The term that refers to the measure of volume in audio signals is decibels. Decibels are a logarithmic unit used to express the intensity of sound or the power level of an audio signal. In audio engineering, decibels quantify the relative loudness of sounds, allowing for easy comparison between different audio levels.

For instance, in sound systems, an increase of 10 decibels typically corresponds to a perceived doubling of loudness, which helps in managing sound levels effectively. This is crucial in settings where audio clarity and volume control are important, such as in installations and broadcasting.

In contrast, hertz is the unit of frequency, measuring the number of cycles per second of a sound wave. Ohms measure electrical resistance, relevant in evaluating circuit components but unrelated to sound volume. Watts measure electrical power, which can indicate how much power an audio system consumes or outputs, but does not specifically relate to the subjective perception of sound volume. Therefore, decibels are the correct term for measuring volume in audio signals.