Watch the off-beat “and” slide later in the beat as you raise the swing ratio — and hear it at the same instant.

Build major, minor, suspended, Japanese, and blues-colored pentatonic scales with note names, formulas, modal rotations, relative pairs, and practical fretboard box positions. Pentatonic Presets ...

Add multiple speaker or sound-source levels with logarithmic SPL summing, distance loss, coupling behavior, room support, target margin, and practical headroom. Combined SPL Presets Choose a system ...

Convert acoustic sound power level, Lw, into estimated sound pressure level, Lp, at a listener or measurement point using distance loss, directivity, boundary radiation, room support, and air ...

Convert any frequency in Hz into the nearest musical note, octave, MIDI number, exact equal-tempered pitch, cents error, and written transposition. The core formula is MIDI = 69 + 12 x log2(frequency ...

Calculate distributed speaker transformer taps, total amplifier load, reserve headroom, wire voltage drop, current draw, and equivalent impedance for 70V audio lines. Use these presets as starting ...

Calculate tuned tube lengths from note frequency, material stiffness, density, diameter, wall thickness, end allowance, and free-free tube overtone behavior. Wind chime tubes behave like free-free ...

Convert sensitivity ratings, correct 2.83V specifications for impedance, estimate listening SPL, and calculate amplifier power for target loudness with headroom. Sensitivity Reference dB SPL at 2.83V ...

Estimate vent area, per-port diameter, slot dimensions, air-speed margin, and tuning length for a bass-reflex subwoofer enclosure.

All geometry inputs convert with the toggle; density and speed stay in SI.

Formula set: speed = 331.3 + 0.606 x temp, wavelength = speed / Hz, ideal spacing = wavelength x layout factor, delay = spacing / speed x 1000, footprint = active shape area x buffer. Calculate Array ...

Air speed changes with temperature and humidity. Air temperature (C) Used only when the medium is air.