Re: spectral shape vs pitch

["Peter Shute" pshute2]

Can someone please explain the term "spectral shape"?=0D
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Peter Shute=0D
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> Sent: Thursday, 21 January 2016 7:51 AM=0D
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> Subject: [Nature Recordists] spectral shape vs pitch=0D
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> *     Melodic recognition in songbirds=0D
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> Researchers report that starlings trained to recognize short tone sequenc=
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> did not recognize the same sequences when the pitches of all tones were=
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> uniformly shifted from the training sequence, or when the tones were=0D
> played at the same pitch with an unfamiliar timbre, but that the birds co=
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> recognize sequences that preserved the spectral shape of the tones even i=
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> the absence of pitch.=0D