signal averaging

signal averaging

An MRI term for signal-to-noise improvement by averaging several free induction decays (FIDs) under similar conditions. The approximate amount of improvement in signal-to-noise (S/N) ratio is calculated as the square root of the number of excitations.
References in periodicals archive ?
Separation of the buried EP wave forms from the other electrical activity is accomplished by signal averaging.
Signal averaging is an efficient method to denoise the EEG signal which has stable occurrences of noises.
The research was financially supported by the state program "Science" # 936 "Development of medical nanosensors and hardware-software complex for noninvasive micropotential registration during human biopotential real-time measuring in wide frequency band without signal averaging and filtration for electrophysiological research and artificial limb control".
The PCie-9852 provides onboard signal averaging based on FPGA technology executed independent of the host CPU.
The Monebo solution, on the other hand, takes advantage of advanced signal averaging techniques and sampling of key "fiducial" points to negate the need for this warm-up time.
Operating at an ultra-fast scan rate of 100 scans/second, the EP-IR can provide unprecedented sensitivity through signal averaging, allowing it to measure multiple gas components in the ppb to ppm range simultaneously, which allows for near real-time monitoring of processes.
A mean number of 150 beats were used for signal averaging, for achieving mean noise level 0,7[micro]V.
In May 2006, Arrhythmia announced that it had entered into a research agreement with the University of Rochester to participate in the National Institutes of Health-funded investigation that may give a boost to Arrhythmia's signal averaging software.
Although we have implemented the median method on a computer after acquisition of all M waveforms, it could also be implemented in the firmware of the oscilloscope prior to acquisition of the resultant (median reconstructed) waveform, just as signal averaging is presently implemented.