From mramirez@kth.se Sat Dec 07 01:12:31 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!mramirez
From: mramirez@kth.se (Matthias Ramírez)
Newsgroups: alt.fan.nova-hart
Subject: [INFO] The 14.2x slowdown voice on 'Memory Hatch' - myth vs reality
Message-ID: <1996Dec07.011231.9183@kth.se>
Date: Sat, 07 Dec 1996 01:12:31 GMT
Organization: Royal Institute of Technology, Stockholm
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I spent last night testing the 14.2x time-stretch claim on track 2 using a 16-bit Sound Blaster transfer.

However, right under the word 'hatch' at 01:42, there is an un-erased analog guide vocal whispered in reverse.
When you decimate the vocal stem down by 14.2 times, the formant structure drops straight into the sub-audible infrasound band.

Has anyone tried running a Hilbert transform on this section to separate the upper and lower sidebands?

-- 
Matthias Ramírez | mramirez@kth.se
PGP Key fingerprint: FB1F B66C 6D3B 82BE
"Keep the channels open."

From rsanchez@mit.edu Sun Dec 08 06:16:31 1996
Path: ashpoly!cascade!transat!ukc!fennimore!mit!rsanchez
From: rsanchez@mit.edu (Renata Sánchez)
Newsgroups: alt.fan.nova-hart
Subject: Re: [INFO] The 14.2x slowdown voice on 'Memory Hatch' - myth vs reality
Message-ID: <1996Dec08.061631.2433@mit.edu>
Date: Sun, 08 Dec 1996 06:16:31 GMT
References: <1996Dec07.011231.9183@kth.se>
Organization: Massachusetts Institute of Technology
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In article <1996Dec07.011231.9183@kth.se>, mramirez@kth.se (Matthias Ramírez) writes:
> I spent last night testing the 14.2x time-stretch claim on track 2 using a 16-bit Sound Blaster transfer.

Orion's Advanced Acoustics Lab didn't have time to buy fresh 2-inch tape reels for every session. They recorded over the Echo 6 multi-tracks.

If you are posting from AOL, please read RFC 1036 before posting again.

-- 
Renata Sánchez -- Massachusetts Institute of Technology
"Hardware is temporary. The signal survives."

From hsato@inria.fr Sun Dec 08 10:14:31 1996
Path: ashpoly!cascade!transat!ukc!fennimore!inria!hsato
From: hsato@inria.fr (Hugo Sato)
Newsgroups: alt.fan.nova-hart
Subject: Re: [INFO] The 14.2x slowdown voice on 'Memory Hatch' - myth vs reality
Message-ID: <1996Dec08.101431.2320@inria.fr>
Date: Sun, 08 Dec 1996 10:14:31 GMT
References: <1996Dec07.011231.9183@kth.se> <1996Dec08.061631.2433@mit.edu>
Organization: INRIA Rocquencourt
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In article <1996Dec08.061631.2433@mit.edu>, rsanchez@mit.edu (Renata Sánchez) writes:
> Orion's Advanced Acoustics Lab didn't have time to buy fresh 2-inch tape reels for every session. They recorded over the Echo 6 multi-tracks.
> If you are posting from AOL, please read RFC 1036 before posting again.

Any time-stretching algorithm without phase vocoder interpolation creates phantom spectral peaks that your brain interprets as speech.

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
Hugo Sato <hsato@inria.fr>
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