Sentences with phrase «background noise levels lower»

Deep blue regions, such as Yellowstone National Park in Wyoming and the Great Sand Dunes National Park in Colorado, have background noise levels lower than 20 decibels — a silence likely as deep as before European colonization, researchers say.

Not exact matches

Your baby may sleep better with some background music or a low level of noise.

BACKGROUND OR LOW - LEVEL noise in the home, work or school often disrupts people's concentration.

High winds raise the background noise level, seismic surveys» intense pulses are unique and easily identifiable, and marine vessels are clearly identified by low - frequency rumbles.

• In a bungled attempt at clarification of a letter by Valerie Yule about using concert technology to help older people discriminate dialogue (19 March, p 33), we added a sentence saying that compensating for the difficulty of picking out voices from low - frequency background noise «often requires that the radio or television be turned up to a level unpleasant for younger ears».

This reduces background noise to even lower levels.

At the same time, there is a low level of spontaneous activity at synapses whereby neurotransmitter is released occasionally, producing a kind of background «noise» in terms of neuronal signals.

Many dogs will benefit from being left with a radio on low level as this provides a little background noise and «company».

The noise criteria for wind farms applied in Australia establish fixed noise limits for low background noise environments and variable noise limits when background noise levels are higher.

The cardioid pickup pattern helps with this, and contributes a very low background noise level.