PCM AUDIO SCRAMBLE DEVICE

PURPOSE:To realize the scramble of PCM audio by storing a PCM audio sample data while dividing into blocks by a prescribed data number and rearranging the PCM audio sample data in the time axis so as to reduce the correlation with original audio information. CONSTITUTION:An analog audio signal is co...

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1. Verfasser: NEZU SHUNICHI
Format: Patent
Sprache:eng
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Zusammenfassung:PURPOSE:To realize the scramble of PCM audio by storing a PCM audio sample data while dividing into blocks by a prescribed data number and rearranging the PCM audio sample data in the time axis so as to reduce the correlation with original audio information. CONSTITUTION:An analog audio signal is converted into a digital PCM audio sample data A by an AD converter 3. The data A is collected by the data number to be formed into one block and stored in a storage means 4. A rearrangement means 5 applies control the data A from the means 4 in the order in response to the pass word information given externally. Thus, the sampling data changed with the order is sent. Then the correlation with the original audio information is decreased and the scrambled PCM audio is realized.