Audiophiles spend a lot of time and effort worrying about audio specs like Total Harmonic Distortion (THD ... There are many ways to measure THD in practice, but [Michael Jackson] has an ...

Some 1-million plug-in devices provided to homeowners by Whisker Labs are now programmed to monitor and measure total harmonic distortion (THD). THD is a gauge of uneven or “noisy” power, which at ...