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April 30, 2019
USound specifies and measures Ganymede MEMS speakers, Achelous and Adap, in both acoustic domains: in the baffle and the coupler (artificial ear). For both setups, proprietary measurement adapters are used to fit the standardised setup. In Baffle To measure in a baffle, the measurement adapter places the MEMS speaker with appropriate sealing inside the IEC baffle. The…
Learn moreApril 11, 2019
The baffle measurement is standardised in the IEC 60268-5 [1], even though in everyday applications, no baffle is present. So why does the industry rely on this particular setup? There is one main reason: it is universal. The baffle is basically just a massive wall which separates back and front side of the speaker. The…
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June 4, 2018
First, we should clarify how power consumption is typically measured with electro-dynamic speakers or BAs. Since the impedance of these speakers is roughly constant over frequency (typically 4, 8 or 32Ω), this impedance value is taken as “nominal”. With this, a very simple transformation from a result obtained with a constant voltage into a result with…
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