Rub and buzz added to loudspeaker analysis software
Audio Precision has improved loudspeaker and headphone analysis capability with version 6.1 software for its APx500 analysers.
“Most importantly for the designers and manufacturers of speaker drivers, and products incorporating them, APx software now offers the broadest set of methodologies available for detecting rub and buzz defects,” according to the company, explaining: “Rub and buzz is a term commonly used to describe any one of several possible manufacturing defects that cause undesirable noises to be emitted during speaker operation.”
Rub-related noises occur when the speaker cone is off centre or canted, causing moving parts to rub against static parts. Buzz is due to loose particles – chips off the magnet or bits of glue – trapped in the speaker’s gaps. Another fault detected is air leaks – commonly perforations in the speaker surround, unsealed dust caps or gaps in the housing.
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