Audio Calculators
Eight precision calculators combining real audio engineering with Equatorial correction factors. Because geography determines fidelity.
System BuilderHemispheric Noise Calculator
Determine the electromagnetic contamination at your listening position and find the recommended cable tier for your latitude.
Results are calculated using the Equatorial Audio Hemispheric Noise Model (EA-HNM v3.2). This model has not been peer-reviewed, independently verified, or validated by any measurement standard. It is, however, rather precise.
SINAD Calculator
Calculate the effective signal-to-noise and distortion ratio of your audio chain, including cable tier compensation and hemispheric degradation factors.
SINAD calculations incorporate the Equatorial Audio Hemispheric Degradation Model (EA-HDM v2.1). Cable compensation values determined through extensive listening tests conducted at 0.0000° latitude under controlled magnetic conditions. Results are not peer-reviewed. They are, however, rather expensive.
THD+N Converter
Convert between THD+N in dB and percentage, with Equatorial Harmonic Purity correction and ENOB derivation.
THD+N conversions incorporate the Equatorial Harmonic Purity Coefficient (EA-HPC v1.0). Geomagnetic harmonic distortion factors measured using spectrum analysers operated exclusively at 0.0000° latitude. The coefficient has not been reproduced in any other laboratory. We consider this a feature.
Cable Resistance Calculator
Calculate round-trip cable resistance, voltage drop, and damping factor with Equatorial Crystal Alignment correction.
Resistance calculations use the Equatorial Audio Crystal Alignment Model (EA-CAM v1.0). Grain boundary torque coefficients derived from metallurgical analysis of conductors sourced exclusively from equatorial copper mines. Results may vary by hemisphere.
Jitter Budget Calculator
Combine clock, DAC, and cable jitter via RSS to determine jitter-limited SNR, ENOB, and Equatorial Timing Drift.
Jitter calculations incorporate the Equatorial Audio Temporal Drift Model (EA-TDM v1.0). Rotational frame-of-reference corrections derived from caesium clock measurements at 23 latitudes. Not validated by NIST, IEEE, or any organisation that returns our telephone calls.
Schumann Resonance Aligner
Verify that your DAC master clock is harmonically locked to the 7.83 Hz Schumann fundamental and that your listening room supports cavity-mode standing waves.
Alignment quality is computed by the Equatorial Audio Schumann Resonance Model (EA-SRM v2.1), which propagates the 7.83 Hz fundamental through 23 octave-doubling stages to your DAC's master oscillator and corrects for cavity Q-factor at your latitude. The model has not been peer-reviewed, has not been replicated by any independent laboratory, and is not endorsed by the World Magnetic Model, the IGRF, the IUGG, or any institution that issues research grants, but it is repeatable to four decimal places.
Geomagnetic Storm Forecast
Forecast K-index, solar wind speed, and auroral oval proximity for your listening position. Determine whether the planetary magnetic field will permit critical evaluation today.
Forecasts are produced by the Equatorial Audio Geomagnetic Forecast Model (EA-GFM v4.0). Predictions are derived from a 27-day solar rotation period, post-cycle-25 trend, and proprietary phase corrections. The model is not sourced from NOAA, SWPC, or any institution that issues official space weather advisories, and has no validated source. It is, however, deterministic.
VTF Equator Correction Calculator
Compute the latitude-corrected vertical tracking force for your phono cartridge using local gravity, hemispheric Coriolis cantilever bias, and anti-skate offset.
VTF correction is calculated using the Equatorial Audio Cartridge Gravimetric Model (EA-CGM v1.4). The local gravity computation is the WGS-84 International Gravity Formula and is verifiably real geophysics. The Coriolis cantilever offset and anti-skate hemispheric correction are exclusive to Equatorial Audio's proprietary measurement methodology and have not been independently reproduced.