PROCESSOR FOR GENERATING A PREDICTION SPECTRUM BASED ON LONG-TERM PREDICTION AND/OR HARMONIC POST-FILTERING

A processor for processing an (encoded) audio signal, the processor comprising:an LTP buffer configured to receive samples derived from a frame of the encoded audio signal;an interval splitter configured to divide a time interval associated with a subsequent frame of the encoded audio signal into su...

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Hauptverfasser: KIENE, Jan Frederik, MARKOVIC, Goran, BAYER, Stefan, EDLER, Bernd
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creator KIENE, Jan Frederik
MARKOVIC, Goran
BAYER, Stefan
EDLER, Bernd
description A processor for processing an (encoded) audio signal, the processor comprising:an LTP buffer configured to receive samples derived from a frame of the encoded audio signal;an interval splitter configured to divide a time interval associated with a subsequent frame of the encoded audio signal into sub-intervals depending on the encoded pitch parameter;calculation means configured to derive sub-interval parameters from the encoded pitch parameter dependent on a position of the sub-intervals within the time interval associated with the subsequent frame of the encoded audio signal;a predictor configured for generating a prediction signal from the LTP buffer dependent on the sub-interval parameters; anda frequency domain transformer configured for generating a prediction spectrum (XP) based on the prediction signal;and/or the processor comprising:a splitter configured for splitting a time interval associated with a frame of the audio signal into a plurality of sub-intervals, each having a respective length, the respective length of the plurality of sub-intervals being dependent on a pitch lag value;a harmonic post-filter configured for filtering the plurality of sub-intervals, wherein the harmonic post-filter is based on a transfer function comprising a numerator and a denominator, where the numerator comprises a harmonicity value, and wherein the denominator comprises a pitch lag value and the harmonicity value and/or a gain value.
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MARKOVIC, Goran ; BAYER, Stefan ; EDLER, Bernd</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP4120256A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2023</creationdate><topic>ACOUSTICS</topic><topic>MUSICAL INSTRUMENTS</topic><topic>PHYSICS</topic><topic>SPEECH ANALYSIS OR SYNTHESIS</topic><topic>SPEECH OR AUDIO CODING OR DECODING</topic><topic>SPEECH OR VOICE PROCESSING</topic><topic>SPEECH RECOGNITION</topic><toplevel>online_resources</toplevel><creatorcontrib>KIENE, Jan Frederik</creatorcontrib><creatorcontrib>MARKOVIC, Goran</creatorcontrib><creatorcontrib>BAYER, Stefan</creatorcontrib><creatorcontrib>EDLER, Bernd</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KIENE, Jan Frederik</au><au>MARKOVIC, Goran</au><au>BAYER, Stefan</au><au>EDLER, Bernd</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PROCESSOR FOR GENERATING A PREDICTION SPECTRUM BASED ON LONG-TERM PREDICTION AND/OR HARMONIC POST-FILTERING</title><date>2023-01-18</date><risdate>2023</risdate><abstract>A processor for processing an (encoded) audio signal, the processor comprising:an LTP buffer configured to receive samples derived from a frame of the encoded audio signal;an interval splitter configured to divide a time interval associated with a subsequent frame of the encoded audio signal into sub-intervals depending on the encoded pitch parameter;calculation means configured to derive sub-interval parameters from the encoded pitch parameter dependent on a position of the sub-intervals within the time interval associated with the subsequent frame of the encoded audio signal;a predictor configured for generating a prediction signal from the LTP buffer dependent on the sub-interval parameters; 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subjects ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
title PROCESSOR FOR GENERATING A PREDICTION SPECTRUM BASED ON LONG-TERM PREDICTION AND/OR HARMONIC POST-FILTERING
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