Acoustics
Sound, frequency, wavelength, level and phase – the physical basics for loudspeaker building.
- Beginner Decibels and Levels: Calculating with dB in Sound Reinforcement Levels in decibels are logarithmic ratios. Double the power gives +3 dB, double the sound pressure +6 dB, double the distance in the free field −6 dB. If you know these...
- Intermediate Phase and Interference: Why Loudspeakers Can Cancel Each Other Out When two sound waves meet in antiphase, they cancel each other out. Even small differences in arrival time shift the phase – more at high frequencies than at low ones....
- Beginner Wavelength and Frequency: Why Bass Needs So Much Space Wavelength is the speed of sound divided by frequency. In the bass, sound waves are several metres long – that is why horns need large mouths, and why standing waves and...