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Reverberation time is a measure of the time required for the sound to "fade away" in an enclosed area after the source of the sound has stopped. When it comes to accurately measuring reverberation time with a meter, the term T 60 [6] (an abbreviation for reverberation time 60 dB) is used. T 60 provides
The Noise Reduction Coefficient (NRC) determines the ability of a material to reflect or absorb sound. [5] It is a number between 0 and 1, which 0 being perfectly reflective and 1 being perfectly absorptive. [5] The application of acoustic plasters helps to increase the intelligibility of voice, music, and other sounds under desirable environment.
The basic purpose of such chambers is to add colour and depth to the original sound, and to simulate the rich natural reverberation that is a feature of large concert halls. The development of artificial echo and reverberation chambers was important for sound recording because of the limitations of early recording systems.
Sympathetic resonance has been applied to musical instruments from many cultures and time periods, and to string instruments in particular. In instruments with undamped strings (e.g. harps, guitars and kotos), strings will resonate at their fundamental or overtone frequencies when other nearby strings are sounded.
Acoustic foam tiles are suited to placing on sonically reflective surfaces to act as sound absorbers, thus enhancing or changing the sound properties of a room. [ 11 ] This type of sound absorption is different from soundproofing, which is typically used to keep sound from escaping or entering a room rather than changing the properties of sound ...
A reverberation chamber is used to test the sound absorption coefficients and NRC of a material. The noise reduction coefficient (commonly abbreviated NRC) is a single number value ranging from 0.0 to 1.0 that describes the average sound absorption performance of a material. An NRC of 0.0 indicates the object does not attenuate mid-frequency ...
ValhallaDSP says this reverb is best for the sound of "old school digital hardware reverbs". [13] One review feels that while it is excellent for getting the unreal larger than life sound of a classic Lexicon reverb, it does not work as a subtle reverb effect and is not a reverb for every occasion.
The first reverb effects, introduced in the 1930s, were created by playing recordings through loudspeakers in reverberating spaces and recording the sound. [2] The American producer Bill Putnam is credited for the first artistic use of artificial reverb in music, on the 1947 song "Peg o' My Heart" by the Harmonicats.