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Monitors, headphones, and your room
Published in Rick Snoman, Dance Music Manual, 2019
A subwoofer is an additional mono speaker designed to handle all the low frequencies. The subwoofer will deliver all frequencies typically ranging from 20 Hz to 120 Hz leaving the main studio monitors to reproduce the rest of the frequency spectrum. While this can provide a great solution – particularly if the monitors do not have an extended frequency response – in a small, untreated room, the low frequencies produced by a subwoofer result in standing waves and interference. Standing waves are a result of two waves of the same frequency, amplitude, and wavelength meeting one another from opposite directions. This occurs because the waveform leaving the subwoofer meets the previous waveform reflected from another surface.
The Home Cinema
Published in Lars-Ingemar Lundström, Understanding Digital Television, 2012
However, there is a new channel on top of all this, the sub-bass channels that are fed to the sixth speaker, the “subwoofer.” The subwoofer channel is extracted from the two basic channels that are used as carriers. The subwoofer only reproduces the lowest frequencies of the audio spectrum and usually has its own built in amplifier. Some people say that this is the most important audio channel of them all. You can choose the volume and the frequency range to be reproduced by separate controls on the subwoofer itself.
Resonant absorbers
Published in Trevor J. Cox, Peter D'Antonio, Acoustic Absorbers and Diffusers, 2016
Trevor J. Cox, Peter D'Antonio
It has been shown that multiple subwoofers located at specific room locations with the right delays and gains can be used to reduce excitation of room modes.2 But a more common and flexible solution is resonant absorption, such as a membrane design, which in audio engineering is often called bass traps. A membrane absorber converts the high sound pressure fluctuations typically found at wall surfaces and in corners into selective absorption in the modal frequency range.
The creation of SenseLab: a laboratory for testing and experiencing single and combinations of indoor environmental conditions
Published in Intelligent Buildings International, 2018
Philomena M. Bluyssen, Freek van Zeist, Stanley Kurvers, Martin Tenpierik, Sylvia Pont, Bart Wolters, Luuk van Hulst, Darell Meertins
Besides the four air supply grilles, the ceiling of the experience room includes: Four independently controlled ceiling mounted loudspeakers (near-/midfield studio monitors, three-way, 2 × 7″ woofer, ADAM Audio A77x) and a subwoofer (200W, 1 × 10″ MKII, ADAM Audio Sub10) (from AMPTEC) above the suspended ceiling, connected to a 32-channel (16 in/16 out) audio interface (Behringer FCA 1616 Firepower) connected to a computer with sound editing software, with which it is possible to create different types of sound/noise.Three types of lighting armatures: four direct light led (HP 55 W), four indirect light led (LP 40 W) and eight soft light led (LP 28 W) armatures (from ETAP), which can be controlled from a PC, laptop and/or tablet, and gives the possibility to change the distribution, intensity and diffuseness of light.