ABSTRACT
In concert venues, reflected sounds travel farther than direct sounds, thereby causing the reverberant sound field to rapidly lose high-frequency energy—live concerts are therefore noticeably more "mellow" toward the rear of the auditorium. Pitch is dependent on sound level, with low notes sounding slightly lower and high notes slightly higher at increased volumes. Humans respond to sounds ranging over a sound pressure range of about one million to one. The one of greatest importance in audio is the amplitude of electrical signal or sound level vs. frequency, or as it is commonly known: the frequency response. Loudness is the perceptual correlate of sound level. Sounds of all frequencies and wavelengths reflect around rooms in a somewhat chaotic manner, but when the wavelengths are of the same order as the dimensions of a room some special events occur. Spectrally complex sounds are shared among multiple drivers, thereby reducing the opportunity for intermodulation distortion.
