Attenuation - the reduction of an electrical signal. Audio frequency - the acoustic spectrum of human hearing, generally regarded to be between 20 Hz and 20 kHz. Baffle - a board or other planar ...

DPA’s d:fine in-ear broadcast headset microphones are exceptionally small, lightweight, and barely visible, yet deliver the full audio frequency spectrum and sound fidelity of a full size condenser ...

How do you differentiate the design of an audio player today? Consumers thinking of purchasing an audio player will certainly care about supported audio compression formats like MP3, AAC, WMA, HE-AAC, ...