THD Calculator

by John Siau November 29, 2022 1 min read

THD % to dB Converter
% THD
RESULTS
dB THD
THD dB to % Converter
dB THD
RESULTS
% THD
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THD+N Audibility Calculator

by John Siau November 16, 2022 4 min read

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
CONTRIBUTING FACTORS
Gain from amplifier: dB (relative to 2.83 V)
Gain from single loudspeaker: dB
Gain from multiple loudspeakers: dB
Loss due to distance: dB (relative to 1 meter)
Gain from room reflections: db (typical - may vary)
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.
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