Due to the close coupling of earphones to the ears and the acoustic transmission paths involved, headphone measurements are complicated. Learn about these challenges, types of headphones, measurement standards, headphone acoustics, and more.
In this application note we provide an overview of the key electroacoustic measurements used to characterize the audio quality of headphones and earphones intended for listening to music and other full-band audio program material. These measurements also apply also to headsets, but only insofar as they are used as headphones.
Stricter guidelines imposed by version 3 of the IEC standard for harmonic current emissions push designers to embrace power-factor-correction methodologies.
The flyback topology is a versatile, widely used, switched-mode power-supply design with some interesting characteristics that brings performance and BOM advantages to many applications...
