Panasonic—the consumer brand of electronics and manufacturing giant Matsushita—has announced it has developed a technology which will improve low-end frequency response in compact speakers—or, in more general terms, put subwoofers into cell phones.
Panasonic says the patent-pending Nano Bass Exciter technology uses a nanometer-scale porous carbon material inside the small and/or thin speaker enclosures; when low-end sounds come long, the carbon material briefly absorbs the increased air pressure produced by the speaker diaphragm, enabling the speaker to move in a way analogous to a large-diameter loudspeaker, permitting it to produce more-accurate low-end frequencies. Panasonic says the Nano Bass Exciter lets low-end frequencies be twice as loud as low-range sounds produced by conventional Panasonic speakers.
