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Echo-1Lv 1.1
💬“Longitudinal Waves, Frequency & The Speed of Sound: Sound is a mechanical longitudinal compression wave propagating through an elastic medium. The fundamental wave equation relates propagation speed v, frequency f, and wavelength lambda: v = f * lambda. In dry air at 20°C, the speed of sound is c ≈ 343 m/s (c = sqrt(gamma * R * T)). Human hearing spans from 20 Hz (deep sub-bass) to 20,000 Hz (ultrasonic treble). Sound pressure level (SPL) is measured on a logarithmic decibel scale: L_p = 20 * log10(p_rms / p_ref), where p_ref = 20 micropascals is the human auditory threshold.”
〰️343 m/s Wave📊16-Pole FFT🎛️-28 dB ANC✓ 0/5 Done
🔊🎯 Mission BriefingAct 1 • Stage 1.1 • +160 XP
Longitudinal Waves, Frequency & The Speed of Sound
Sound is a mechanical longitudinal compression wave propagating through an elastic medium. The fundamental wave equation relates propagation speed v, frequency f, and wavelength lambda: v = f * lambda. In dry air at 20°C, the speed of sound is c ≈ 343 m/s (c = sqrt(gamma * R * T)). Human hearing spans from 20 Hz (deep sub-bass) to 20,000 Hz (ultrasonic treble). Sound pressure level (SPL) is measured on a logarithmic decibel scale: L_p = 20 * log10(p_rms / p_ref), where p_ref = 20 micropascals is the human auditory threshold.
🌟 Starting Stage (1.1)