Method and apparatus for digitally processing stored compressed analog signals
AssigneeANT Nachrichtentechnik GmbH
InventorsJurgen Wermuth, Heinz Gockler
Life of this patent
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Abstract
Method and apparatus for processing compressed, stored analog signals, such as audio signals, from a storage medium, including first converting the signals to digital signals and thereafter expanding the signals. To realize a large volume range in the conversion of compressed recorded signals to expand digital signals, the compressed analog signals picked up from a storage medium are initially analog/digital converted and only then digitally expanded.
Claims30
A method of processing signals scanned from a storage medium containing compressed recorded analog signals, in order to transmit them either in digital or analog form, to further process them and/or re-record them, comprising the steps of converting the scanned signals by analog/digital conversion and thereafter digitally expanding the scanned signals.
In a signal processing apparatus including a scanning means for scanning signals from a storage medium on which analog signals are recorded in a compressed manner and wherein the signals are to be expanded for subsequent utilization, the improvement comprising:
- an A/D converter responsive to the scanned compressed analog signals for initially converting the compressed analog signals into an output of compressed digital signals, and
- a digital expander having an input connected to the output of the A/D converter for digitally expanding the compressed digital signals and for providing an output.
Dependencies are inferred from the claim text.