Dr. Jozef Zwislocki, an audio researcher, has reportedly researched a new technique that adopts a simple amplifier to provide up to 37 dB background noise cancellation and reproduce crystal clear sound output on the SensGard ZEM headphones, in both low and high frequency ranges.
The SensGard ZEM headphones is said to weigh hardly 2 ounces and completely portable with folding option. It is reportedly priced around $90 that seems lighter on the wallet compared to other expensive gadgets available for noise cancellation in the market.