A linear prediction coefficient of a signal represented in a frequency domain is obtained by performing linear prediction analysis in a frequency direction by using a covariance method or an autocorrelation method. The differential amplifier includes a first inductor located between a differential transistor and a gate grounded transistor, an optional second inductor located between a load resistor and a power supply, and an optional third inductor located between a source follower transistor and an output terminal. In a preferred embodiment a prizeobject gate is provided for dispensing or returning any secured game prizesobjects based on their combined weight and the means for securing the game prizesobjects includes a claw assembly operatively arranged for positioning about a game cabinet by the game player. The computer-readable mediums further include instructions for commanding the one or more data processors to extract the content feature from a set of words automatically recognized in the non-scripted speech sample and to score the non-scripted speech sample by providing the extracted content feature to a scoring model to generate the content-based speech score. In order to improve the handiness of the voltage transformer during charging and, in particular, during transport, the present invention is so conceived that, at the transport position, the housing components have been moved relative to one another such that the space occupied at the transport position is smaller than that occupied at the charging position. Thus, the illumination light emitted from the light sources can be projected on the shade member to create flaring illumination light like a candle frame.