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#1
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An Improved Method of Noise Cancellation
FYI...
O-1 An Improved Method of Noise Cancellation—David Herman1, Dudley Haestler1, Simon Busbridge2 1 AudioGravity Ltd., Hove, UK; 2 University of Brighton, Brighton, East Sussex, UK The effectiveness of conventional noise cancellation techniques is limited by tolerances between the signal and noise channels. A system is described in which the ambient noise error signal is fed back for further cancellation (Advanced Ambient Noise Rejection Technology, ANRT). Small physically displaced microphones differentiate near- field signals from high-level ambient noise. Band limiting filters further reduce high-frequency phase distortion. The effectiveness is increased such that an unintelligible signal produced by normal speech can result in an SNR improvement of 40 dB in an ambient noise field of 98 dBA. The technology can be integrated into a single, small, low-power CMOS analog integrated circuit; it is also ideally suited for MEMS (Si-Mic). ....Moose |
#2
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An Improved Method of Noise Cancellation
Moose writes:
[...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? -- % Randy Yates % "I met someone who looks alot like you, %% Fuquay-Varina, NC % she does the things you do, %%% 919-577-9882 % but she is an IBM." %%%% % 'Yours Truly, 2095', *Time*, ELO http://home.earthlink.net/~yatescr |
#3
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An Improved Method of Noise Cancellation
Moose writes:
[...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? -- % Randy Yates % "I met someone who looks alot like you, %% Fuquay-Varina, NC % she does the things you do, %%% 919-577-9882 % but she is an IBM." %%%% % 'Yours Truly, 2095', *Time*, ELO http://home.earthlink.net/~yatescr |
#4
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An Improved Method of Noise Cancellation
Moose writes:
[...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? -- % Randy Yates % "I met someone who looks alot like you, %% Fuquay-Varina, NC % she does the things you do, %%% 919-577-9882 % but she is an IBM." %%%% % 'Yours Truly, 2095', *Time*, ELO http://home.earthlink.net/~yatescr |
#5
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An Improved Method of Noise Cancellation
Moose writes:
[...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? -- % Randy Yates % "I met someone who looks alot like you, %% Fuquay-Varina, NC % she does the things you do, %%% 919-577-9882 % but she is an IBM." %%%% % 'Yours Truly, 2095', *Time*, ELO http://home.earthlink.net/~yatescr |
#6
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An Improved Method of Noise Cancellation
This is where I found the abstract: http://www.aes.org/,
http://www.aes.org/events/116/papers/O.cfm and these are all the paper sessions with abstracts: http://www.aes.org/events/116/papers/. Here is some stuff out of Stanford and the like which is what you are looking for, I think: http://www.memsnet.org/mems/. I have but scratched the surface myself and will continue to read and look into this albeit experimental but fascinating. Good luck... ....Moose On Sun, 25 Apr 2004 02:28:43 GMT, Randy Yates wrote: Moose writes: [...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? |
#7
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An Improved Method of Noise Cancellation
This is where I found the abstract: http://www.aes.org/,
http://www.aes.org/events/116/papers/O.cfm and these are all the paper sessions with abstracts: http://www.aes.org/events/116/papers/. Here is some stuff out of Stanford and the like which is what you are looking for, I think: http://www.memsnet.org/mems/. I have but scratched the surface myself and will continue to read and look into this albeit experimental but fascinating. Good luck... ....Moose On Sun, 25 Apr 2004 02:28:43 GMT, Randy Yates wrote: Moose writes: [...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? |
#8
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An Improved Method of Noise Cancellation
This is where I found the abstract: http://www.aes.org/,
http://www.aes.org/events/116/papers/O.cfm and these are all the paper sessions with abstracts: http://www.aes.org/events/116/papers/. Here is some stuff out of Stanford and the like which is what you are looking for, I think: http://www.memsnet.org/mems/. I have but scratched the surface myself and will continue to read and look into this albeit experimental but fascinating. Good luck... ....Moose On Sun, 25 Apr 2004 02:28:43 GMT, Randy Yates wrote: Moose writes: [...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? |
#9
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An Improved Method of Noise Cancellation
This is where I found the abstract: http://www.aes.org/,
http://www.aes.org/events/116/papers/O.cfm and these are all the paper sessions with abstracts: http://www.aes.org/events/116/papers/. Here is some stuff out of Stanford and the like which is what you are looking for, I think: http://www.memsnet.org/mems/. I have but scratched the surface myself and will continue to read and look into this albeit experimental but fascinating. Good luck... ....Moose On Sun, 25 Apr 2004 02:28:43 GMT, Randy Yates wrote: Moose writes: [...] it is also ideally suited for MEMS (Si-Mic). "Si-"licon "Mic"rophone? Never heard of that - any more references to such a device? |
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