A method of assigning a similarity score representative of a similarity between a first speech signal and a second speech signal. The double wedge has a top surface, a bottom surface, a front, a rear, a right side, and a left side. The navigation data may then be used to select individual start points, different audio channels, special effects, etc. Our experimental results have confirmed the uses of conducting metal oxide, specifically, ITO and Zinc Oxide can be used to replace Cr or Ti for better performance in terms of SPR resonant properties and sensitivity enhancement for 3 to 15 times than traditional ones. A hand grip is connected to a second end of the first elastic exercise resistance cable. A conversion step sets a break length hy that divides the data conversion area 105c into a first data storage area 105a for converting the first-side print data and a second data storage area 105b for converting the second-side print data in the page mode, and then converts the print data.