Inventor · disambiguated record
Per Ekstrand
Also filed as: EKSTRAND PER · EKSTRAND PER RUNE ALBIN
22 granted patents·2,176 citations·filing 1998–2011
97Inventor score
Top patents by PatentIndex Score
22 records- 0198US6708145B1Enhancing perceptual performance of sbr and related hfr coding methods by adaptive noise-floor addition and noise substitution limitingCODING TECHNOLOGIES SWEDEN AB·Filed 2000·Granted Mar 16, 2004·286 cites·17 claims
- 0297US7483758B2Spectral translation/folding in the subband domainCODING TECHNOLOGIES SWEDEN AB·Filed 2001·Granted Jan 27, 2009·130 cites·25 claims
- 0397US7003451B2Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding systemCODING TECH AB·Filed 2001·Granted Feb 21, 2006·213 cites·19 claims
- 0497US6978236B1Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switchingCODING TECH AB·Filed 2000·Granted Dec 20, 2005·210 cites·19 claims
- 0597US6680972B1Source coding enhancement using spectral-band replicationCODING TECHNOLOGIES SWEDEN AB·Filed 1998·Granted Jan 20, 2004·514 cites·19 claims
- 0696US8112284B2Methods and apparatus for improving high frequency reconstruction of audio and speech signalsKJOERLING KRISTOFER·Filed 2008·Granted Feb 7, 2012·52 cites·30 claims
- 0796US7680552B2Spectral translation/folding in the subband domainCODING TECHNOLOGIES SWEDEN AB·Filed 2008·Granted Mar 16, 2010·42 cites·17 claims
- 0896US7469206B2Methods for improving high frequency reconstructionCODING TECH AB·Filed 2002·Granted Dec 23, 2008·106 cites·10 claims
- 0996US7328162B2Source coding enhancement using spectral-band replicationCODING TECH AB·Filed 2003·Granted Feb 5, 2008·113 cites·8 claims
- 1096US7191121B2Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switchingCODING TECHNOLOGIES SWEDEN AB·Filed 2005·Granted Mar 13, 2007·59 cites·15 claims
- 1195US7433817B2Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding systemCODING TECH AB·Filed 2005·Granted Oct 7, 2008·52 cites·13 claims
- 1295US7181389B2Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switchingCODING TECH AB·Filed 2005·Granted Feb 20, 2007·48 cites·14 claims
- 1394US7283955B2Source coding enhancement using spectral-band replicationCODING TECH AB·Filed 2003·Granted Oct 16, 2007·129 cites·9 claims
- 1494US7242710B2Aliasing reduction using complex-exponential modulated filterbanksCODING TECH AB·Filed 2002·Granted Jul 10, 2007·88 cites·9 claims
- 1589US6925116B2Source coding enhancement using spectral-band replicationCODING TECH AB·Filed 2003·Granted Aug 2, 2005·60 cites·5 claims
- 1687US7260520B2Enhancing source coding systems by adaptive transpositionCODING TECH AB·Filed 2001·Granted Aug 21, 2007·52 cites·14 claims
- 1784US8036881B2Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limitingCODING TECHNOLOGIES SWEDEN AB·Filed 2009·Granted Oct 11, 2011·8 cites·3 claims
- 1881US8036880B2Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limitingCODING TECHNOLOGIES SWEDEN AB·Filed 2009·Granted Oct 11, 2011·6 cites·7 claims
- 1974US8019612B2Methods for improving high frequency reconstructionCODING TECH AB·Filed 2009·Granted Sep 13, 2011·3 cites·20 claims
- 2067US8036882B2Enhancing perceptual performance of SBR and related HFR coding methods by adaptive noise-floor addition and noise substitution limitingCODING TECHNOLOGIES SWEDEN AB·Filed 2009·Granted Oct 11, 2011·2 cites·4 claims
- 2165US7917561B2Partially complex modulated filter bankCODING TECH AB·Filed 2006·Granted Mar 29, 2011·3 cites·24 claims
- 2253US8447621B2Methods for improving high frequency reconstructionKJOERLING KRISTOFER·Filed 2011·Granted May 21, 2013·0 cites·7 claims
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