Patent ID: 6490241
Filing Date: 2002-12-03
Classification: G09B,G11B

Abstract:
A sheet-shaped sound carrier, especially for a sound illustrated book, which is to be associated with selected pages and has on its front side at least one spiral shaped sound groove and at least two adjustment perforations which are arranged outside of the sound groove and around the same symmetrically with respect to a center axis thereof, and are dimensioned such that the at least two adjustment perforations each receive an aligning foot of a sound reproducing device placed in a pre-aligned position upon the sound carrier, the reproducing device having a pickup means rotatable about an axis of rotation in an aligned position in which the center axis of the sound groove and the axis of rotation of the sound pickup means coincide, wherein at least one of the adjustment perforations is surrounded by an upwardly projecting annular bead on a surface of the sound carrier.