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Noise

Amplifier Output Calculator

by John Siau November 23, 2022 1 min read

Amps Calculators dBu Noise SNR Vrms Watts

Amplifier Output Calculator
Speaker Impedance:	Ohms
Power into Above Load:	Watts

RESULTS
Output Level:	dBu
Output Voltage:	Volts RMS
Peak Voltage:	Volts Peak
	Volts Peak to Peak
Output Current:	Amps RMS
Peak Current:	Amps Peak

Amplifier Output Noise Calculator
Rated Power into 8 Ohms:	Watts
Signal to Noise Ratio (SNR):	dB

RESULTS
Output Level:	dBu
Output Voltage:	Volts RMS
Output Noise Level:	dBu
Output Noise Voltage:	uV RMS
SNR at 1W Output:	dB

THD+N Audibility Calculator

by John Siau November 16, 2022 4 min read

Calculators Noise Sensitivity SPL THD

THD+N AUDIBILITY CALCULATOR
THD+N:	dB
Speaker Sensitivity:	dB SPL (2.83 V, 1 M)
Amplifier Power Per Channel into 8 Ohms:	Watts
Distance from Speaker(s):	meters
Number of Speakers:	One Speaker
	Two Speakers
Room Configuration:	Anechoic Chamber or Large Open Space
	Typical Listening Room
	Speakers mounted on or in front wall

RESULTS
Peak Music Level:	dB SPL (at listening position)
Peak THD+N Level:	dB SPL (at listening position)
AUDIBILITY
THD+N is absolutely inaudible if THD+N SPL level is negative.
THD+N may be audible if THD+N SPL level is positive.

Click "Read More" for a tutorial and a more advanced version of this calclulator.

SNR to Output Noise Calculator

by John Siau November 16, 2022 2 min read

Calculators DAC3 Noise SNR

SNR to Output Noise Calculator
Output Signal Voltage:	Vrms
Signal to Noise Ratio (SNR):	dB

RESULTS
Output Signal Level:	dBu
Output Noise Level:	dBu
Output Noise Voltage:	uV

Click "Read More" for a tutorial with interactive examples.

Uncorrelated Noise Summation

by John Siau November 15, 2022 3 min read

Calculators dB Noise SNR SPL

Noise Summation
Noise Level 1:	dB
Noise Level 2:	dB

RESULTS
Noise Sum:	dB
Units may be dBFS, dBSPL, dBV,
dBu, dBm, dBW,
or dB relative to full output.
(All units must match)
Uncorrelated Noise Only

Click "Read More" for a tutorial with interactive examples.