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A VAD operating in a mobile phone must be able to detect speech in the presence of a range of very diverse types of acoustic background noise. In these difficult detection conditions it is often preferable that a VAD should fail-safe , indicating speech detected when the decision is in doubt, to lower the chance of losing speech segments.
Line out provides an audio signal output and line in receives a signal input. The line in/out connections on consumer-oriented audio equipment are typically unbalanced , with a 3.5 mm (0.14 inch, but commonly called "eighth inch") 3-conductor TRS minijack connector providing ground, left channel, and right channel, or stereo RCA jacks .
The quiet sounds below the threshold remain unaffected. This is the most common type of compressor. A limiter can be thought of as an extreme form of downward compression as it compresses the sounds over the threshold especially hard. Upward compression increases the volume of quiet sounds below a certain threshold.
The impedance curve of such a system can be very complex, and the simple formula above does not as easily apply. The nominal impedance rating of consumer loudspeakers systems can aid in choosing the correct loudspeaker for a given amplifier (or vice versa).
Minimal audible pressure involves presenting stimuli via headphones [2] or earphones [1] [14] and measuring sound pressure in the subject's ear canal using a very small probe microphone. [2] The two different methods produce different thresholds [ 1 ] [ 2 ] and minimal audible field thresholds are often 6 to 10 dB better than minimal audible ...
A fanless CPU cooler based on heat pipe technology. A quiet, silent or fanless PC is a personal computer that makes very little or no noise.Common uses for quiet PCs include video editing, sound mixing and home theater PCs, but noise reduction techniques can also be used to greatly reduce the noise from servers.
"Quiet area" or "quiet areas" is a concept used in landscape planning to highlight areas with good sound quality and limited noise disturbance. The concept is typically used in nature and nature-like areas with high experiential values and/or high accessibility. Despite the name, quiet areas are not "quiet" in the strictest meaning of the word.
In music, the dynamics of a piece are the variation in loudness between notes or phrases.Dynamics are indicated by specific musical notation, often in some detail.However, dynamics markings require interpretation by the performer depending on the musical context: a specific marking may correspond to a different volume between pieces or even sections of one piece.