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Harikrishna P Natarajan

from Shakopee, MN
Age ~45
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Also known as:
Prasad Natarajan Harikrishna, Harikrish R Natarajan, Harikrishna P Natrajan
Phone and address:
2997 Fountain Way, Prior Lake, MN 55379
(952) 233-2546
Connected to:
Abinaya Natarajan, 35Amarnath Natarajan, 50Anandan Natarajan, 40Arjun Natarajan, 49Deepa Nataraj, 45Ganesh C Natarajan, 54Girija Natarajan, 55Gokarnesan D Natarajan, 80Gopal Nataraj, 33Gunasekar Natarajan, 45

Harikrishna Natarajan Phones & Addresses

  • 2997 Fountain Way, Shakopee, MN 55379 (952) 233-2546
  • 720 Cobblestone Way, Shakopee, MN 55379 (952) 445-2401
  • 13700 Valley View Rd, Eden Prairie, MN 55344
  • Edina, MN
  • Columbus, OH
  • Hopkins, MN

Publications

Us Patents

Output Phase Modulation Entrainment Containment For Digital Filters

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US Patent:
8116473, Feb 14, 2012
Filed:
Mar 13, 2006
Appl. No.:
11/276763
Inventors:
Arthur Salvetti - Colorado Springs CO, US
Harikrishna P. Natarajan - Shakopee MN, US
Jon S. Kindred - Minneapolis MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
A61F 11/06
H04R 27/00
H04R 25/00
US Classification:
381 7111, 381 7112, 381 83, 381317, 381318
Abstract:
Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are provided. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

Output Phase Modulation Entrainment Containment For Digital Filters

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US Patent:
8553899, Oct 8, 2013
Filed:
Dec 16, 2008
Appl. No.:
12/336460
Inventors:
Arthur Salvetti - Colorado Springs CO, US
Harikrishna P. Natarajan - Shakopee MN, US
Jon S. Kindred - Minneapolis MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
A61F 11/06
H04R 29/00
H04R 3/00
H04R 25/00
US Classification:
381 7112, 381 7111, 381 58, 381 96, 381317, 381318
Abstract:
Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are provided. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

Output Phase Modulation Entrainment Containment For Digital Filters

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US Patent:
8634576, Jan 21, 2014
Filed:
Dec 29, 2010
Appl. No.:
12/980720
Inventors:
Arthur Salvetti - Colorado Springs CO, US
Harikrishna P. Natarajan - Shakopee MN, US
Jon S. Kindred - Minneapolis MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
H04R 29/00
H04R 3/00
H04R 25/00
H04B 15/00
A61F 11/06
G10K 11/16
H03B 29/00
US Classification:
381 93, 381 58, 381 95, 381 96, 381 7111, 381318
Abstract:
Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are provided. Additional method and apparatus can be found in the specification and as provided by the attached claims and their equivalents.

Method And Apparatus To Reduce Entrainment-Related Artifacts For Hearing Assistance Systems

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US Patent:
20050036632, Feb 17, 2005
Filed:
May 27, 2004
Appl. No.:
10/857599
Inventors:
Harikrishna Natarajan - Shakopee MN, US
Jon Kindred - Minneapolis MN, US
International Classification:
H04B015/00
H04R027/00
US Classification:
381093000, 381083000
Abstract:
A system providing method and apparatus to detect occurrence of an entrainment artifact and address it. The system analyzing a feedback canceller filter for certain characteristics that are associated with an entrained filter. When an entrained filter is detected, the feedback canceller filter is reset to a good filter that ideally represents the current approximate external acoustic feedback path without the characteristics of the entraining signal.

Entrainment Avoidance With An Auto Regressive Filter

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US Patent:
20080130927, Jun 5, 2008
Filed:
Oct 23, 2007
Appl. No.:
11/877567
Inventors:
Lalin Theverapperuma - Minneapolis MN, US
Harikrishna P. Natarajan - Shakopee MN, US
Arthur Salvetti - Colorado Springs CO, US
Jon S. Kindred - Minneapolis MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
H04R 25/00
US Classification:
381318
Abstract:
A method of signal processing an input signal in a hearing aid to avoid entrainment, the hearing aid including a receiver and a microphone, the method comprising using an adaptive filter to measure an acoustic feedback path from the receiver to the microphone and adjusting an adaptation rate of the adaptive filter using an output from a filter having an autoregressive portion, the output derived at least in part from a ratio of a predictive estimate of the input signal to a difference of the predictive estimate and the input signal.

System For Measuring Maximum Stable Gain In Hearing Assistance Devices

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US Patent:
20090316922, Dec 24, 2009
Filed:
Jun 19, 2009
Appl. No.:
12/488129
Inventors:
Ivo Merks - Eden Prairie MN, US
Harikrishna P. Natarajan - Shakopee MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
H04R 25/00
US Classification:
381 60, 381318
Abstract:
This disclosure relates to measurement of maximum stable gain of a hearing assistance device, including but not limited to hearing aids, as a function of frequency. In various approaches an adaptive filter with a variable step size is used to determine maximum stable gain as a function of frequency. In various approaches, the determination is done in process steps performed by the hearing assistance device. In various approaches, the determination is done in process steps performed by the hearing assistance device and by a host computer.

Method And Apparatus To Reduce Entrainment-Related Artifacts For Hearing Assistance Systems

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US Patent:
20110116667, May 19, 2011
Filed:
Sep 3, 2010
Appl. No.:
12/875646
Inventors:
Harikrishna P. Natarajan - Shakopee MN, US
Jon S. Kindred - Minneapolis MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
H04B 15/00
H04R 25/00
US Classification:
381318
Abstract:
A system providing method and apparatus to detect occurrence of an entrainment artifact and address it. The system analyzing a feedback canceller filter for certain characteristics that are associated with an entrained filter. When an entrained filter is detected, the feedback canceller filter is reset to a good filter that ideally represents the current approximate external acoustic feedback path without the characteristics of the entraining signal.

Acoustic Feedback Event Monitoring System For Hearing Assistance Devices

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US Patent:
20110150231, Jun 23, 2011
Filed:
Dec 22, 2009
Appl. No.:
12/644932
Inventors:
Harikrishna P. Natarajan - Shakopee MN, US
Assignee:
Starkey Laboratories, Inc. - Eden Prairie MN
International Classification:
H04R 25/00
H04R 29/00
US Classification:
381 60, 381318
Abstract:
The present disclosure relates to tracking of acoustic feedback events of a hearing assistance device, such as a hearing aid. Information about the acoustic feedback events is stored for analysis. Such information is useful for programming acoustic feedback cancellers and other parameters of a hearing assistance device.
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Harikrishna P Natarajan from Shakopee, MN, age ~45 Get Report