Innovative engineering vibrating screen noise control measures cut the problem low-frequencies by 50dB. The 11.8Hz fundamental tone from this vibratory sieve caused complaints at some distance. Conventional control methods (enclosures etc) are not cost-effective options at these frequencies. Whilst this tonal frequency is inaudible, the effects that cause complaints are usually rattles and reflections in objects, for example...
The engineering noise reduction modifications reduced the low-frequency hum by a remarkable (and probably record-breaking) 99.999% (50dB) and were low cost with no effect on normal operation or throughput.
This engineering vibrating screen noise control technology is applicable to a wide range of applications.
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