spectral illusion

Dictionary of Hallucinations. . 2010.

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  • Spectral leakage — is an effect in the frequency analysis of signals where small amounts of signal energy are observed in frequency components that do not exist in the original waveform. The term leakage refers to the fact that it appears as if some energy has… …   Wikipedia

  • illusive conception —    Also known as spectral illusion. The two terms were introduced as synonyms in 1847 by the British surgeon Walter Cooper Dendy (17941871), denoting a subclass of ghosts of the mind s eye , which itself constitutes a subclass of what Dendy calls …   Dictionary of Hallucinations

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