| 摘要 |
The invention relates to a device for demonstrating an effect of a selected signal-processing operation. The device comprises signal-processing means ( 3 ) for processing incoming signals to supply said signals to presentation means ( 9 ), and demonstration means ( 7, 10, 12 ) for demonstrating the selected processing operation. The device further comprises storage means ( 11 ) for storing a demonstration signal which is specifically suitable for effectively demonstrating the feature. Upon activation of the demonstration means, a demonstration signal which is most suitable for demonstrating said processing operation is read from the storage means, processed by the signal-processing means and presented on the presentation means.
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