Signal Chain Noise Calculator
Add devices in series and calculate cumulative noise floor through your signal chain.
Cumulative Noise Floor
Add devices to see cumulative noise calculation
SNR Calculator
Calculate Signal-to-Noise Ratio and assess audio quality.
SNR Results
Thermal Noise (Johnson Noise)
Calculate thermal noise voltage using the kTBR formula: V = √(4kTBR)
Thermal Noise Results
Noise Figure Calculator
Calculate noise figure and cascaded noise figure using Friis formula.
Noise Figure Results
Dynamic Range Calculator
Calculate dynamic range and compare to theoretical bit depth limits.
Dynamic Range Results
Equivalent Input Noise (EIN)
Calculate preamp EIN with 150Ω terminated input.
EIN Results
CMRR Calculator
Calculate Common Mode Rejection Ratio for balanced connections.
CMRR Results
A-Weighting Calculator
Convert flat noise measurement to A-weighted values.
A-Weighting Frequency Response
A-Weighting Results
Noise Exposure Calculator
Calculate noise dose percentage based on SPL level and duration.
Exposure Results
Common Equipment Noise Specs
Reference noise specifications for popular audio equipment.
Preamps
Neve 1073
-127 dBu EIN
API 512c
-129 dBu EIN
Grace m101
-130 dBu EIN
Focusrite ISA One
-128 dBu EIN
BAE 1073
-127 dBu EIN
AD Converters
Apogee Symphony I/O
-144 dBFS noise
Lynx Aurora 16
-142 dBFS noise
RME ADI-2 Pro
-144 dBFS noise
Universal Audio Apollo
-143 dBFS noise
Antelope Orion 32+
-141 dBFS noise
Mixing Consoles
SSL 4000G
-129 dBu EIN
Neve 88R
-128 dBu EIN
API Legacy Plus
-130 dBu EIN
Harrison 32Classic
-127 dBu EIN
Mackie Onyx
-125 dBu EIN
Digital Interfaces
Focusrite Scarlett 2i2
-128 dBu EIN
PreSonus Studio 68c
-127 dBu EIN
MOTU 8M
-129 dBu EIN
Zoom PodTrak P4
-120 dBu EIN
Steinberg UR28M
-126 dBu EIN