In other words, what they called the timbre must be retained? But if that c=
an't change, and the pitch can't change, what can change? Tempo? I don't kn=
ow what is meant by "absence of pitch".=0D
=0D
Peter Shute=0D
=0D
Sent from my iPad=0D
=0D
On 23 Jan 2016, at 7:28 AM, atl <=
l.com> [naturerecordists] <<naturere=
>> wrote:=0D
=0D
=0D
=0D
I believe spectral shape would be the frequency and amplitude data over tim=
e including all harmonics, as opposed to the idea of just a series of funda=
mental pitches. The sonic "envelope" as a whole of the call.=0D
=0D
On Jan 21, 2016 6:45 PM, "Peter Shute <=
rg.au> [naturerecordists]" <<naturer=
>> wrote:=0D
=0D
=0D
Can someone please explain the term "spectral shape"?=0D
=0D
Peter Shute=0D
=0D
> -----Original Message-----=0D
> From: <=
s.com>=0D
> <m("yahoogro","naturerecordists");=">=
ups.com>]=0D
> Sent: Thursday, 21 January 2016 7:51 AM=0D
> To: <=
.com>'=0D
> <<=
>>=0D
> Subject: [Nature Recordists] spectral shape vs pitch=0D
>=0D
>=0D
>=0D
> * Melodic recognition in songbirds=0D
>=0D
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> Researchers report that starlings trained to recognize short tone sequenc=
es=0D
> did not recognize the same sequences when the pitches of all tones were=
=0D
> 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=
uld=0D
> recognize sequences that preserved the spectral shape of the tones even i=
n=0D
> the absence of pitch.=0D
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