https://en.bharatpedia.org/w/index.php?action=history&feed=atom&title=Man_Mohan_SondhiMan Mohan Sondhi - Revision history2026-10-24T16:22:52ZRevision history for this page on the wikiMediaWiki 1.43.6https://en.bharatpedia.org/w/index.php?title=Man_Mohan_Sondhi&diff=154545&oldid=previmported>Billposer: Added mention of signal-processing as his work was not restricted to speech.2021-08-19T06:47:26Z<p>Added mention of signal-processing as his work was not restricted to speech.</p>
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'''Man Mohan Sondhi''' (18 December 1933– 4 February 2018) was a prominent researcher in speech processing and signal processing who worked at [[Bell Laboratories]] during 1962–2001. He was famous for his research on [[echo cancellation]]. Born in [[Firozpur]], [[Punjab]], he was educated at [[Delhi University]], [[Indian Institute of Science]], and [[University of Wisconsin–Madison]].<ref>{{cite web |title=MAN MOHAN SONDHI |url=https://obits.nj.com/obituaries/starledger/obituary.aspx?n=man-mohan-sondhi&pid=188218114&fhid=11740 |publisher=The Star-Ledger |access-date=19 January 2021}}</ref><ref>{{cite web |title=The History of Echo Cancellation |url=http://www-labs.iro.umontreal.ca/~mignotte/IFT3205/Documents/Applications/EchoCancellation.pdf |publisher=IEEE Signal Processing Magazine |access-date=19 January 2021}}</ref><br />
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As a specialist in speech science and [[signal processing]], Sondhi recognized that the future of satellite communications would require developing a technology to cancel the 600 millisecond signal echo created by the delay of transmission. Sondhi and his collaborators at Bell Labs eventually created the echo canceller that made practical satellite transmissions possible.<ref>IEEE History Project http://www.ieeeghn.org/wiki/index.php/Man_Mohan_Sondhi</ref><br />
He received 5 patents.<ref>http://www.patentbuddy.com/Inventor/Sondhi-Man-Mohan/1391505</ref><br />
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In 1998 he received the [[IEEE Eric E. Sumner award]].<br />
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==References==<br />
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==External links==<br />
* http://www.ece.umd.edu/class/enee765.F2011/sondhi_mitra_1976.pdf<br />
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[[Category:2018 deaths]]<br />
[[Category:1933 births]]<br />
[[Category:Indian emigrants to the United States]]<br />
[[Category:21st-century American engineers]]<br />
[[Category:Members of the United States National Academy of Engineering]]<br />
[[Category:University of Toronto faculty]]<br />
[[Category:Indian Institute of Science alumni]]<br />
[[Category:University of Delhi alumni]]<br />
[[Category:University of Wisconsin&ndash;Madison alumni]]</div>imported>Billposer