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Not everyone has access to an anechoic chamber, but there are ways to simulate one quite accurately. http://audiojudgement.com/quasi-anechoic-loudspeaker-measurements/

Quasi anechoic loudspeaker measurements Part 1 - Audio Judgement

PPM have an on-site RF anechoic chamber for testing antennas and filters. Description from vialite.com. I searched for this on bing.com/images

Anechoic chamber testing is utilized by many companies to test everything from product noise to how well a microphone works.

Does an anechoic chamber cause hallucinations?  ||  Do anechoic chambers really cause hallucinations? https://acousticengineering.wordpress.com/2013/07/22/does-an-anechoic-chamber-cause-hallucinations/?utm_campaign=crowdfire&utm_content=crowdfire&utm_medium=social&utm_source=pinterest

Does an anechoic chamber cause hallucinations?

Does an anechoic chamber cause hallucinations? || Do anechoic chambers really cause hallucinations? https://acousticengineering.wordpress.com/2013/07/22/does-an-anechoic-chamber-cause-hallucinations/?utm_campaign=crowdfire&utm_content=crowdfire&utm_medium=social&utm_source=pinterest

Anechoic chamber at the Harvard Acoustics Research Laboratory. "An anechoic chamber is also a kind of prosthesis, serving to eliminate sound reflections in a room.  Bell Labs built the first one, and Harvard's Acoustics Research Laboratory also built one.  ( See Beranek's Box  by Laci Videmsky for a short film on the anechoic chamber at Harvard  )  John Cage famously sat in Harvard's anechoic chamber for a period of time and emerged with a striking observation:  I heard two sounds, one high…

Anechoic chamber at the Harvard Acoustics Research Laboratory. "An anechoic chamber is also a kind of prosthesis, serving to eliminate sound reflections in a room. Bell Labs built the first one, and Harvard's Acoustics Research Laboratory also built one.

Anechoic Chamber, by Robert Windel

New Anechoic Chamber

The new anechoic chamber at work is almost complete. My task is to outfit the control room with all test equipment and related furnishings.

Anechoic Chamber                                                                                                                                                                                 More

letsbuildahome-fr: Bell Telephone Acoustics Lab, 1947 by Eric Schaal “Bell Telephone engineer in a research room designed to eliminate of all outside sound”

Anechoic Chamber ("an-echoic" meaning non-reflective, non-echoing or echo-free) is a room designed to completely absorb reflections of either sound or electromagnetic waves. They are also insulated from exterior sources of noise. The combination of both aspects means they simulate a quiet open-space of infinite dimension, which is useful when exterior influences would otherwise give false results.

A large drive-in EMC RF anechoic test chamber. Note the orange construction cones for size reference

radio-anechoic-chmaber-dtu-©-alastair-philip-wiper-12

Radio Anechoic Chamber, Denmark

This is an anechoic (echo-free) chamber. Alastair Philip Wiper documents the unintentional beauty of science and research facilities (via designboom). - This is an anechoic (echo-free) chamber.

#acoustic wall insulation, #anechoic chamber sound proof, #recordng studio soundproofing foam

Anechoic Chamber Sound Proof/ Acoustic Wall Insulation - Buy Acoustic Wall Insulation,Anechoic Chamber Sound Proof,Recordng Studio Soundproofing Foam Product on Alibaba.com

wall insulation, chamber sound proof, studio soundproofing foam (covered in fabric of course)

Noetic

Noetic

The Tree of Life and the Ten Divine Utterances | Cosmic Navigator of the spheres (dreamscapes)

The Tree of Life and the Ten Divine Utterances | Cosmic Navigator of the spheres (dreamscapes)

Yesod, the ninth sphere, Moon, initiation / foundation realm, Scorpio

Yesod, the ninth sphere, Moon, initiation / foundation realm, Scorpio

Anechoic chamber at Microsoft Redmond Campus. Photograph courtesy of Wilson Rothman

Microsoft's Anechoic Chamber: The Place Where Sound Goes To Die

Acoustic tidbit: have you ever heard of an anechoic chamber? Concert halls like ours use similar methods to harness sound.