Abstract: A method and system for locating a sound source are provide. The method may include detecting a sound signal of a sound by each of two audio sensors. The method may also include converting the sound signals detected by the two audio sensors from a time domain to a frequency domain. The method may further include determining a high frequency ratio of each of the sound signals in the frequency domain. The method may further include determining a direction of the sound source based on the high frequency ratios.

Abstract: A method and system for locating a sound source are provide. The method may include detecting a sound signal of a sound by each of two audio sensors. The method may also include converting the sound signals detected by the two audio sensors from a time domain to a frequency domain. The method may further include determining a high frequency ratio of each of the sound signals in the frequency domain. The method may further include determining a direction of the sound source based on the high frequency ratios.

Abstract: A hydraulic buffer device includes a first chamber, a second chamber, and a buffering space disposed under the first and second chambers, an air bladder disposed in the buffering space, an oil chamber disposed above the first and second chambers and divided by a piston into upper and lower chamber portions, and an annular passage disposed around the oil chamber. When the piston is moved downwardly within the oil chamber, the hydraulic oil flows from the lower chamber portion into the buffering space via the first chamber to contract the air bladder so that, upon expansion of the air bladder, air pressure in the air bladder pushes the hydraulic oil to flow from the buffering space into the upper chamber portion via the second chamber and the annular passage.

Abstract: A foot plate device is connected to a prosthetic lower leg of an artificial foot, and includes a flexible foot plate. The foot plate has a front plate section, an inclined intermediate plate section extending rearwardly and upwardly from a rear end of the front plate section, and a rear plate section extending rearwardly from a rear end of the intermediate plate section and generally parallel to the front plate section. The front plate section has at least one open-ended slot formed vertically therethrough and extending across the front plate section along a longitudinal direction of the foot plate, so as to divide the front plate section into two force-receiving plate portions. The rear plate section is connected with the prosthetic lower leg.

Abstract: An ironing board relates to auxiliary tooling for ironing. The ironing board has a thin plate with two opposite long edges and two opposite short edges. The first short edge has a V-shaped notch. A long groove is disposed on the second short edge, close to the first long edge. The thin plate width is slightly smaller than the shirt pocket width. The distance from the long groove to the second long edge is smaller than the shirt cuff width. When inserting the V-shaped notch beneath the shirt collar, the collar is easily ironed with an iron or garment steamer. When inserting the short edge corresponding to the V-shaped notch into the shirt pocket, the pocket is easily ironed with an iron or garment steamer. When inserting the shirt cuff between the long groove and the second long edge, the cuff is easily ironed with an iron or garment steamer.