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[Discuss] Fidelity voice-recognition security?
- Subject: [Discuss] Fidelity voice-recognition security?
- From: rlk at alum.mit.edu (Robert Krawitz)
- Date: Thu, 23 Nov 2017 12:06:59 -0500 (EST)
- In-reply-to: <81590fe1-938c-3f63-2822-6544c3df4de1@gmail.com> (richard.pieri@gmail.com)
- References: <23060.21501.663030.241910@blazemonger.com> <108a6c7e-e678-6cba-85b1-d20765cc03f8@gmail.com> <D63B28DE.69A65%joe@polcari.com> <20171122184451.84EEF14312C@localhost> <ccb43cdd-174d-8027-0a35-6479f519d134@gmail.com> <20171123034241.F06B5142DDA@localhost> <66905cc0-35ab-a3d8-9b7c-05ba5f74cec4@gmail.com> <20171123123631.18F77141E5D@localhost> <81590fe1-938c-3f63-2822-6544c3df4de1@gmail.com>
On Thu, 23 Nov 2017 09:38:06 -0500, Richard Pieri wrote: > On 11/23/2017 7:36 AM, Robert Krawitz wrote: >> Bit of a difference there, you agree? > > Yup. Although the "we have no idea" bit is hyperbole because the reality > is we do know how unique fingerprints are. Francis Galton did > substantial scientific research on fingerprints back in the late 1800s. Which is irrelevant, since this is about voice recognition, not fingerprints. >> Meanwhile, as voice synthesis improves in fidelity... > > That's only part of it. Even if (when) you can accurately reproduce any > arbitrary person's voice there is still the playback mechanisms. Voice > coils are mechanically incapable of exactly reproducing sounds. Even the > best speakers can be identified as speakers if your hearing is sensitive > enough and you know what to listen for. The same applies to microphones. They aren't perfect and they vary too. And there are a lot more variables with voices/microphones and fingerprints: position of the mic wrt the mouth, ambient noise, airflow, upper respiratory infections, allergies, exertion, and so forth. > On the flip side of that, if you inject the synthesized data stream > directly into system, bypassing speaker and microphone, it can still be > detected as a fake because it will lack the analog distortion expected > from the handset mic. ...except that the synthesized voice can incorporate said analog distortion. Decades ago Carver managed to do a pretty good job of reproducing a much more expensive Mark Levinson amplifier, using purely analog components; that kind of thing can be done a lot more easily now. -- Robert Krawitz <rlk at alum.mit.edu> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton
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- [Discuss] Fidelity voice-recognition security?
- From: richard.pieri at gmail.com (Richard Pieri)
- [Discuss] Fidelity voice-recognition security?
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- [Discuss] Fidelity voice-recognition security?
- From: dbarrett at blazemonger.com (Daniel Barrett)
- [Discuss] Fidelity voice-recognition security?
- From: richard.pieri at gmail.com (Richard Pieri)
- [Discuss] Fidelity voice-recognition security?
- From: joe at polcari.com (Joe Polcari)
- [Discuss] Fidelity voice-recognition security?
- From: rlk at alum.mit.edu (Robert Krawitz)
- [Discuss] Fidelity voice-recognition security?
- From: richard.pieri at gmail.com (Richard Pieri)
- [Discuss] Fidelity voice-recognition security?
- From: rlk at alum.mit.edu (Robert Krawitz)
- [Discuss] Fidelity voice-recognition security?
- From: richard.pieri at gmail.com (Richard Pieri)
- [Discuss] Fidelity voice-recognition security?
- From: rlk at alum.mit.edu (Robert Krawitz)
- [Discuss] Fidelity voice-recognition security?
- From: richard.pieri at gmail.com (Richard Pieri)
- [Discuss] Fidelity voice-recognition security?
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