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For example, if noise-predictive detection is performed in conjunction with a maximum a posteriori (MAP) detection algorithm such as the BCJR algorithm [13] then NPML and NPML-like detection allow the computation of soft reliability information on individual code symbols, while retaining all the performance advantages associated with noise ...
Sound recognition can classify feature vectors. Feature vectors are created as a result of preliminary data processing and linear predictive coding. Sound recognition technologies are used for: Music recognition; Speech recognition; Automatic alarm detection and identification for surveillance, monitoring systems, based on the acoustic environment
A minimum detectable signal is a signal at the input of a system whose power allows it to be detected over the background electronic noise of the detector system. It can alternately be defined as a signal that produces a signal-to-noise ratio of a given value m at the output.
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Sound eXchange (SoX) is a cross-platform audio editing software. It has a command-line interface , and is written in standard C . It is free software , licensed under GPL-2.0-or-later , with libsox licensed under LGPL-2.1-or-later , and distributed by Chris Bagwell through SourceForge .
Adaptive noise cancelling is a signal processing technique that is highly effective in suppressing additive interference or noise corrupting a received target signal at the main or primary sensor in certain common situations where the interference is known and is accessible but unavoidable and where the target signal and the interference are unrelated, that is, uncorrelated [1] [2] [3].
Typically, more than one device is used, and the location is then triangulated between the several devices. As a military air defense tool, passive acoustic location was used from mid-World War I [ 1 ] to the early years of World War II to detect enemy aircraft by picking up the noise of their engines.
Noise measurement can also be part of a test procedure using white noise, or some other specialized form of test signal.In audio systems and broadcasting, specific methods are used to obtain subjectively valid results in order that different devices and signal paths may be compared regardless of the inconsistent spectral distribution and temporal properties of the noise that they generate.