ACI	Acoustic complexity index
ADC	Analog-to-digital converter
AOP	Acoustic overload point
ASIC	Application specific integrated circuit
CPU	Central processing unit
ECM	Electret condenser microphone
EIN	Equivalent input noise
GSM	Global system for mobile communications
FFT	Fast Fourier transformation
FGPA	Floating-point-gate-array
HD	Hard disk
I2S	Integrated interchip sound
IT	Information technology
IoT	Internet of things
LAN	Local area network
MCU	Microcontroller unit
MEMS	Micro-electrical-mechanical systems
NPL	National Physical Laboratory
NSN	Noise sensors networks
OS	Operating system
PC	Personal computer
PCB	Printed circuit board
PDM	Pulse density modulated
PLC	Power-line communication
POC	Proof-of-concept
POE	Power over Ethernet
PSR	Power supply rejection
PSRR	Power supply rejection ratio
RF	Radio-frequency
R-Pi	Raspberry Pi
SD	Secure digital
SIM	Subscriber identity module
SN	Sensors networks
SNR	Signal-to-noise ratio
SSD	Solid-state drive
TFSD	Time and frequency second derivative
THD	Total harmonic distortion
USB	Universal serial bus
Wi-Fi	Wireless fidelity
WASN	Wireless acoustic sensor network