Noise reduction. Through technology

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Engine Test Facility

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Testimonials


It is difficult to image a turntable mat "breaking in", but I seemed to enjoy the music more the second day. From the very first, there was vastly improved focus over the standard felt mat that comes with the Linn. And there was even more focus than was achieved with the Boston Audio Design Mat 1. The background was quieter, the bass deeper and tighter, and the soundscape was more clearly defined and larger than with the Mat 1.

The difference is kind of like walking along the rim of the Canyon de Chelly in Arizona. The Mat 1 holds back and stays a little further away from the edge, allowing you to fully enjoy the splendid vistas as you walk along. The Isoplatmat, on the other hand, ventures closer to the edge where you are wise to pay attention to every footstep, lest you experience a thousand foot freefall into the canyon. The advantage of being this close to the edge is that you can see more of the canyon floor or deeper into the grooves, if you will. Of course the fall from your listening chair is not as severe, but the Isoplatmat reveals every note of the music, forcing you to pay close attention.

To read the full review follow the link below

http://www.enjoythemusic.com/magazine/equipment/0706/sds_isoplatmat.htm

Engine Test Facility


Resource Plastics

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Client Name      Engine Test Facility
Brief Description      Acoustic enclosure cuts
110dB(A) to just 79dB(A)

SDS has designed and built an acoustic enclosure for housing 1000bhp engines under test, with the result that the noise level has been reduced from 110dB(A) to 79dB(A)
Date      2007
Location     
Value      £
Overview     

When Sound Dead Steel designed an enclosure for an engine test facility where engines up to 1,000 horse power are dyno tested, the problem was extremely challenging. Prior to the SDS installation conversation in the entire factory and offices was impossible, neighboring factories were complaining about the noise and had even bought their own noise meters to monitor the noise from this location.

An extraction system was included to ventilate the enclosure to remove fumes and heat from the test bed.

A point to bear in mind is that every decibel reduction represents a 27% reduction in the power level, 3 decibels = 50% reduction, 10 decibels = 1000% reduction.

A video of this enclosure is on the company's web site, or can be emailed direct if requested.

The first part of the clip shows a motor on full revs without any enclosure in place, the reading peaked at 110dB(A), it then shows the enclosure in place with the doors open which gives a reading of 99dB(A), as the doors close the reading drops to 79dB(A).

This reduction represents more than 99% of the original power level.

The next section shows the motor on tick over, with the doors open the noise is 94dB(A) reducing to 69dB(A) with them closed.

Again this is a power reduction in excess of 99%.

The enclosure reduces noise so well SDS were pleased to have speech in the background as the doors shut, it gives continuity and confirms the noise reduction shown on the meter.

A video of this application is shown in the video clips http://www.sounddeadsteel.com/videos.asp


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