background noise


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Related to background noise: Ambient noise

background noise

[′bak‚grau̇nd ‚nȯiz]
(acoustics)
The unwanted residual sound that is present whether or not the sound source being studied is in operation.
(engineering)
The undesired signals that are always present in an electronic or other system, independent of whether or not the desired signal is present.

background noise

The total noise from all sources other than a particular one of interest.

background noise

An extraneous signal that has crept into a line, channel or circuit.
References in periodicals archive ?
31 seconds, and the lowest achievable ambient background noise level in the space is 37dBA.
The use of ALD's improves the signal-to-noise ratio (SNR) and, as a result, speech in the presence of background noise becomes easier to understand.
Overall, the results show a virtually complete elimination of background noise with an accompanying improvement in voice audio quality beating all leading smartphones tested.
In the first test (audio alone), the children with ASD performed almost as well as typically developing children across all age groups and all background noise levels.
This study seeks to determine what levels of unoccupied background noise impact student learning by assessing the relationship between measured unoccupied background noise levels and standardized student achievement scores from students in the surveyed classrooms.
Scientists have dubbed these persistent vibrations "Earth's hum" The largest undulations in this seismic background noise occur at frequencies between 2 and 7 millihertz, or once every few minutes, says Barbara A.
The algorithm allows measurement of the root mean square (RMS) power for the mixture of background noise, unvoiced fricative speech, and voiced speech encountered speech recognition experiments.
However, they are not watching TV on the PC, but rather having the TV on as background noise while surfing the Web at the same time," says Sujata Ramnarayan, senior industry analyst for Dataquest's e-Digital Media Worldwide program.
The researchers suggest that hearing language in a setting of background noise may even help babies learn more quickly than hearing it in isolated situations.
Designed to reduce ambient background noise and improve audio quality, the headphones make working on a notebook computer, listening to music on a CD player or MP3 player or watching a movie more enjoyable whether traveling, in the office or at home.
para]]Cypher's voice isolation technology recognized for potential to transform mobile phone communications by eliminating background noise on cell phone calls[[/para]]
The level of background noise affects both the intensity of flavour and the perceived crunchiness of foods, researchers have found.