Abstract
The object of the present invention is to evaluate a linear prediction synthesis filter with little computation after converting an internal sampling frequency. A linear prediction coefficient conversion device converts the first linear prediction coefficients calculated at a first sampling frequency into second linear prediction coefficients at a second sampling frequency different from the first sampling frequency, on the real axis of the unit circle, the second at the second sampling frequency based on the first linear prediction coefficients or equivalent parameters. It is a device that includes a means for calculating a power spectrum corresponding to linear prediction coefficients, or a means for calculating autocorrelation coefficients from the power spectrum on the real axis of the unit circle, and a means for converting autocorrelation coefficients into second linear prediction coefficients at the second sampling frequency.
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| 4G,3G | 25/01/2022 | ISLD-202201-012 | NTT DOCOMO INC | Yes | Family Member | ||||
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S1
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Technologies
Product
Use Cases
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Claim
1. Bir birinci örnekleme frekanleda hesaplanan birinci dogrusal tahmin katsayüârlübirinci örnekleme frekansldan farklElolan bir ikinci örnekleme frekansIaki ikinci dogrusal tahmin katsayilar. dönüstüren bir dogrusal tahmin katsaylîlîtlönüstürme cihazlîblup, asag-kileri içermektedir: LSF ayrlStlEnasÃx9ce Chebyshev polinomlarElkullanllârak birim çemberin reel ekseni üzerindeki noktalarda, birinci dogrusal tahmin katsayllâr- dayanarak ikinci örnekleme frekansIaki ikinci dogrusal tahmin katsayllâr- karslEEJ gelen bir güç spektrumunu hesaplamak için bir araç (5002); birim çemberin reel ekseni üzerindeki noktalarda, güç spektrumundan otokorelasyon katsayllârII hesaplanmasüksin bir araç (5003); otokorelasyon katsayllârliîllEl, ikinci örnekleme frekanlehla ikinci dogrusal tahmin katsayllâr- dönüstürülmesi için bir araç (5004); ve burada ikinci dogrusal tahmin katsayllârlEla karsUJKI gelen güç spektrumu, ikinci örnekleme frekansIaki farkllîlfrekanslarl say_ karsHJE gelen reel eksen üzerindeki noktalarda birinci dogrusal tahmin katsayEIârIEIkullanarak bir güç spektrumunun hesaplanmaslýla elde edilmektedir.
2. Bir birinci örnekleme frekanslîida hesaplanan birinci dogrusal tahmin katsaylÃx9frlüyirinci örnekleme frekanledan farklEblan bir ikinci örnekleme frekans-aki ikinci dogrusal tahmin katsayllâr. dönüstüren bir cihaz ile gerçeklestirilen bir dogrusal tahmin katsayElZl dönüstürme yöntemi olup, asaglölakileri içermektedir: LSF ayrlgtlElnasü/e Chebyshev polinomlarElkullanllârak birim çemberin reel ekseni üzerindeki noktalarda, birinci dogrusal tahmin katsayHârI dayanarak ikinci örnekleme frekansIaki ikinci dogrusal tahmin katsayllâr. karsllIEl gelen bir güç spektrumunu hesaplamaya yönelik bir adli (5002); birim çemberin reel ekseni üzerindeki noktalarda, güç spektrumundan otokorelasyon katsayllârII hesaplanmasi yönelik bir adi (5003); otokorelasyon katsayllârliîllEl, ikinci örnekleme frekanslda ikinci dogrusal tahmin katsayilârlEEi dönüstürülmesine yönelik bir adli (5004); ve burada ikinci dogrusal tahmin katsaylÃx9frlEb karslZl gelen güç spektrumu, ikinci örnekleme frekans-aki farklEIfrekanslarI say_ karsIDIZJ gelen reel eksen üzerindeki noktalarda birinci dogrusal tahmin katsayllârIElkullanarak bir güç spektrumunun hesaplanmaslîda elde edilmektedir.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.