Abstract: A method for data manipulation detection of numerical data values uses a testing device. A Benford vector is ascertained from the frequencies expected, according to the Benford's distribution, for predefined initial number groups in a transformation unit by use of a composition data transformation that reproduces the frequencies in relation to one another. A random number generator is repeatedly used to generate randomly distributed numerical values, and multiple simulation vectors are ascertained from the frequencies of the initial number groups of the randomly distributed numerical values by the transformation unit. A detection unit is used to ascertain a simulation deviation from the Benford vector for each simulation vector and to store it in a memory, after which a group of numerical data values is read in via an input interface. A test vector and a test deviation of the test vector are ascertained by the transformation unit.

Abstract: The present invention provides a computer-implemented method and an apparatus for manufacturing an analogue audio storage medium wherein digital audio data is converted into topographical data representing an analogue translation of the digital audio data, and a laser beam is selectively applied to a substrate to form a physical imprint of the topographical data on the surface of the substrate to create an analogue audio storage medium. The medium may be directly playable on a conventional playback device such as a record player and/or used to mould further playable mediums. The invention thereby enables more efficient manufacturing of e.g. vinyl records and consistently ensures a much higher quality of analogue audio.

Abstract: The present invention provides a computer-implemented method and an apparatus for manufacturing an analogue audio storage medium wherein digital audio data is converted into topographical data representing an analogue translation of the digital audio data, and a laser beam is selectively applied to a substrate to form a physical imprint of the topographical data on the surface of the substrate to create an analogue audio storage medium. The medium may be directly playable on a conventional playback device such as a record player and/or used to mould further playable mediums. The invention thereby enables more efficient manufacturing of e.g. vinyl records and consistently ensures a much higher quality of analogue audio.