The folks over at University of Tsukuba have created a patch-like silent sub-woofer that delivers deep bass by attaching to the abdominal muscles.

LAS VEGAS, NEVADA – JANUARY 2019: True to its name, Subwoofer Pros builds subwoofers that produce flat, honest bass, allowing audio professionals to make low-frequency decisions with the confidence ...

US-based manufacturer SVS has added two subwoofers to its range, promising they will offer "reference low frequency performance" for home cinema and music fans. The SB-5000 and the PB-5000 R|Evolution ...

Low-pass filters (LPFs) are fundamental components in modern electronic systems, serving to permit signals below a designated cutoff frequency while attenuating higher frequencies. Recent advances ...