ADA	Average Directional Attenuation
AE	Acoustic Emissions
AS	Acoustic Source
AWGB	Additive White Gaussian Noise
CC	Cross Correlation
CRB	Cramér Rao Bound
CRB${}_{u-v}$	Cramér Rao Bound for unknown velocity of propagation
CRMB	Cramér Rao Matrix Bound
DA	Directional Attenuation
DC	Designed Cluster
DCS	Directive Complex Sensor
DDoA	Difference in Distance of Arrival
DoA	Direction of Arrival
DToA	Difference in Time of Arrival
FEM	Finite Element Method
FI	Fisher Information
FIM	Fisher Information Matrix
Fs	Sampling Frequency
FT	Fourier Transform
GCC	Generalized Cross Correlation
GCC-PHAT	Generalized Cross Correlation with phase transform
GM	Gauss Markov
GW	Guided Waves
IFT	Inverse Fourier Transform
IS	Image Source
ME	Maximum Error
ML	Maximum Likelihood
MUSIC	Multiple Signal Classification
pdf	probability density function
PSNR	Peak Signal to Noise Ratio
SC	Standard Cluster
SD	Standard Deviation
SHM	Structural Health Monitoring
SNR	Signal to Noise Ratio
2D-FT	Bi-dimensional Fourier Transform
2D-IFT	Bi-dimensional Inverse Fourier Transform