Tag Archives: measuring and testing

How high is the power consumption of USound MEMS speakers?

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updated April 18, 2019 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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What is THD?

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THD is a term commonly used in audio engineering. It refers to total harmonic distortion and is used to describe the harmonic distortion present in an acoustic signal, ergo, low THD stands for a high clarity of sound. Measuring THD is an interesting task that we’d like to look at in more detail based on our MEMS speaker Achelous. To

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