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Per Ahgren patents

Recent patents with Per Ahgren listed as an inventor - additional entries may be under other spellings.


Per Ahgren - Related organizations: Microsoft Corporation patents, Telefonaktiebolaget L M Ericsson (publ) patents, Telefonaktiebolaget L M Ericsson patents, Telefonaktiebolaget Lm Ericsson (publ) patents

Reversed echo canceller

02/18/16 - 20160050491 - A method implemented during a communication event conducted between a user device and at least one further user device over a communications network, the method comprising: receiving an audio signal that is to be output from a speaker of said user device, said audio signal comprising at least one microphone
Inventors: Per Ahgren, Karsten V. Sørensen

Echo suppression

12/04/14 - 20140357326 - An echo path of the echo in a received audio signal is modelled using an adaptive model to determine an adaptive model estimate of the echo. The adaptive model estimate is used to determine an estimate of the echo power of the echo in the received audio signal. The power
Inventors: Per Ahgren

Echo removal

12/04/14 - 20140357325 - Echo removal techniques are described. As part of the echo removal, a first model estimate of the echo in the received audio signal is determined using a first model and a second model estimate of the echo is determined using a second model. A first accuracy value of the first
Inventors: Per Ahgren

Echo removal

12/04/14 - 20140357324 - Echo removal techniques are described. As part of the echo removal, an adaptive model estimate of the echo in a received audio signal is determined using an adaptive model based on an outputted audio signal and the received audio signal. The adaptive model executes an algorithm comprising a convergence parameter
Inventors: Per Ahgren

Echo removal

12/04/14 - 20140357323 - Echo removal techniques are described. An echo path of the echo in a received audio signal is modelled using a first model to determine a first model estimate of the echo. The first model estimate is used to determine a first performance value according to a performance metric. The first
Inventors: Per Ahgren

Echo cancellation

12/04/14 - 20140355752 - A method of echo cancellation in an acoustic system, comprising a first user device and at least one further user device, the method comprising, at the first user device: detecting an audio signal received from the at least one further user device over a communications network; supplying the audio signal
Inventors: Karsten Vandborg Sorensen, Per Ahgren

Noise reduction

11/13/14 - 20140334631 - A method of reducing noise in an acoustic system, the method comprising at a first user terminal: receiving an audio signal from at least one further user terminal over a network; executing a communication client on a processing unit, the client configured so as when executed to: supply the audio
Inventors: Jesus De Vicente Peña, Per Ahgren

Echo suppression

06/26/14 - 20140177859 - Method, user device and computer program product for suppressing echo. An audio signal is outputted from a speaker. A microphone receives an audio signal which includes echo resulting from said outputted audio signal. An echo path of the echo is modelled using a plurality of models. A first of the
Inventors: Per Ahgren

Echo suppression

06/26/14 - 20140177858 - Method, user device and computer program product for suppressing echo. An audio signal is output from a speaker. A microphone receives an audio signal, wherein the received audio signal includes an echo resulting from said outputted audio signal. A Finite Impulse Response filter estimate ĥ(t) is dynamically adapted in the
Inventors: Per Ahgren

Echo canceller and a method thereof

02/21/13 - 20130044872 - The present invention relates to an echo canceller (300) for estimating a model of an echo signal and a method thereof. The echo canceller comprises at least an adaptive main filter (301) for modeling the echo signal and an adaptive shadow filter (302) for modeling the echo signal. The adaptive
Inventors: Anders Eriksson, Per Ahgren

Noise suppression method and apparatus

06/09/11 - 20110137646 - The present invention relates to a method and a filter design apparatus for designing a digital filter arrangement for noise suppression of a signal representing an acoustic recording. The method comprises determining a desired frequency response of the digital filter arrangement. The method is characterised by including a combination of
Inventors: Per Ahgren, Anders Eriksson

Noise suppression method and apparatus

10/28/10 - 20100274561 - The present invention relates to a method and apparatus of a digital filter for noise suppression of a signal representing an acoustic recording. The method comprises determining a desired frequency response (H(ω)) of the digital filter; and generating a noise suppression filter based on the desired frequency response. The desired
Inventors: Per Ahgren, Anders Eriksson


### Per Ahgren patent invention listings

The bibliographic references displayed about Per Ahgren's patents are for a recent sample of Per Ahgren's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Per Ahgren filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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