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2011 Nismo#91 · 05-04-2016, 09:23 AM

Resonance and fundamental frequencies. The tube length is fixed but the frequency of pulses, air velocities, and pressure all vary so you get many different resonances and volumes.

https://en.wikipedia.org/wiki/Acoustic_resonance

05-04-2016, 09:23 AM	#2 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,403 Drives: slowly Rep Power: 40569	Resonance and fundamental frequencies. The tube length is fixed but the frequency of pulses, air velocities, and pressure all vary so you get many different resonances and volumes. https://en.wikipedia.org/wiki/Acoustic_resonance