Patent ID: 7236837

Claim:
A reproducing apparatus comprising: an input terminal for inputting audio digital data including a sequence of data blocks each of which consists of a predetermined number of units of data; a thinning-out unit for thinning out part of the audio digital data on a data block basis; and a conversion unit for varying the amplitude of either a sequence of units of data including the last unit of data of a data block immediately preceding a thinned data block or a sequence of units of data including the first unit of data of a data block immediately following the thinned data block, so that the last unit of data of the immediately preceding data block will be concatenated with the first unit of data of the immediately following data block along a smooth amplitude-varying curve, wherein the amplitude-varying curve is calculated to a simply increasing or decreasing function, and wherein the simply increasing or decreasing function is determined on the basis of the difference between the amplitude of the last unit of data of the data block immediately preceding the thinned data block and the amplitude of the first unit of data of the data block immediately following the thinned data block, the amplitude of the units of data of which the amplitude is to be varied in the immediately following data block, position information of the units of data, and the number of units of data in the sequence of units of data.