Abstract: Information searching apparatus and method and a transmission medium with which an edition point can be detected simply from coded data without decoding all the coded data. Particularly, in the present invention, an audio signal is divided into plural blocks on the frequency axis every predetermined time (every predetermined frame), and a scale factor serving as a floating coefficient and a word length are coded as a parameter. In a recording medium are recorded coded audio data and the parameters together with the number Ni of the parameters. In a high-speed searching operation, the parameter number Ni is extracted, and a frame for which the parameter Ni varies stepwise is detected as the edition point.