| 摘要 |
An out-of-band signal generator for generating, from a band-limited signal with a limited frequency band, an out-of-band signal including a frequency component outside the limited frequency band, having a frequency structure estimating means for estimating the frequency structure of the band-limited signal, an out-of-band source signal generating means for generating an out-of-band source signal including an out-of-band frequency component from the band-limited signal, a frequency structure adjusting means for adjusting the frequency structure of the out-of-band source signal according to the estimated frequency structure of the band-limited signal, and a component extracting means for extracting a prescribed band in the out-of-band source signal with the adjusted frequency structure.
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