Only after you have sensed the loudness level of the disk should you turn up the volume to normal strength.

Even the tonal balance is automatically corrected for various loudness levels, eliminating the need for tone controls.

The loudness level should be sufficient to be heard clearly.

The 808 PureView can capture sounds at the loudness level of 145 decibels without distortion.

The phon is a unit of loudness level for pure tones.

The measurement on noise level and loudness level involve imprecision and subjective measures.

The unit of measurement for loudness levels is the phon, and is arrived at by reference to equal-loudness contours.

They constitute health risks only if the loudness level at the listener's ears consistently exceeds 85 decibels.

The idea is to get all the numbers right, regardless of loudness level.

Moreover, the available power can fill a typical living room with sound at loudness levels comparable to those heard at a concert.