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A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.
An acoustic transmission line is the use of a long duct, which acts as an acoustic waveguide and is used to produce or transmit sound in an undistorted manner. Technically it is the acoustic analog of the electrical transmission line , typically conceived as a rigid-walled duct or tube, that is long and thin relative to the wavelength of sound ...
Bioacoustics is a free R package available in CRAN to analyze audio recordings and automatically extract animal vocalizations. ItcContains all the necessary tools to process audio recordings of various formats (e.g., WAV, WAC, MP3, ZC), filter noisy files, display audio signals, detect and extract automatically acoustic features for further ...
multi-track audio editor intended as a replacement for Cubase-like software GPL-2.0-or-later: MusE: Yes No No Qt MIDI sequencer GPL-2.0-or-later: Qtractor: Yes No No Qt A non-destructive multi-track audio and MIDI Workstation GPL-2.0-or-later: Rosegarden: Chris Cannam Yes No No Qt MIDI sequencer and multi-track recorder GPL-2.0-or-later: SoX ...
In acoustics, Stokes's law of sound attenuation is a formula for the attenuation of sound in a Newtonian fluid, such as water or air, due to the fluid's viscosity.It states that the amplitude of a plane wave decreases exponentially with distance traveled, at a rate α given by = where η is the dynamic viscosity coefficient of the fluid, ω is the sound's angular frequency, ρ is the fluid ...
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
Both these type of tests and simulations allow to determine the acoustic attenuation in the far-field. Moreover, the acoustic performance is linked to the acoustic impedance which can be measured with one of the following techniques: Impedance tube or Kundt's tube; Flow-duct-facilities [5] In-situ method or Dean's method [6]
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