Abstract: Provided is an electric dust collector comprising a dust collection unit that traps charged particles; and a microwave generation unit that generates a microwave to be introduced into the dust collection unit and combusts the charged particles trapped in the dust collection unit by the microwave.

Abstract: An electrolytic treatment apparatus is provided. The electrolytic treatment apparatus includes: an electrolytic tank having a cathode and an anode: an injecting portion that injects a liquid into the electrolytic tank; at least one diaphragm that partitions an inner space of the electrolytic tank into a cathode-side region including the cathode and an anode-side region including the anode, and makes a liquid in the cathode-side region and a liquid in the anode-side region electrically connected; a cathode-side discharging portion that supplies, to an exhaust gas treatment apparatus, a cathode-side solution generated in the cathode-side region by electrolyzing the liquid; and an anode-side discharging portion that supplies, to a sterilizing apparatus, an anode-side solution generated in the anode-side region by electrolyzing the liquid.

Abstract: An echo canceller device is provided with a first filter unit that generates a first output signal y1(k) by filtering a first input signal x1(k) with a filter coefficient h(k), an adaptation unit that modifies the filter coefficient h(k) on the basis of an adaptation algorithm so that a first error signal e1(k) becomes small, a first delaying unit that delays a first objective signal d1(k) by a certain time period ? and outputs the signal as a second objective signal d2(k), a second delaying unit that delays the first input signal x1(k) by the certain time period ? and outputs the signal as a second input signal x2(k), and a second filter unit that generates a second output signal y2(k) by filtering the second input signal x2(k) by the filter coefficient h(k) modified by the adaptation unit.

Abstract: An echo canceller device is provided with a first filter unit that generates a first output signal y1(k) by filtering a first input signal x1(k) with a filter coefficient h(k), an adaptation unit that modifies the filter coefficient h(k) on the basis of an adaptation algorithm so that a first error signal e1(k) becomes small, a first delaying unit that delays a first objective signal d1(k) by a certain time period ? and outputs the signal as a second objective signal d2(k), a second delaying unit that delays the first input signal x1(k) by the certain time period ? and outputs the signal as a second input signal x2(k), and a second filter unit that generates a second output signal y2(k) by filtering the second input signal x2(k) by the filter coefficient h(k) modified by the adaptation unit.