Abstract
The present invention provides an audio encoder and method for encoding a non-speech audio signal to generate a bitstream, the audio encoder having a plurality of linear predictive coding coefficients (LC). A combination (2, 3) of a filter (2) and a time-frequency converter (3), wherein the spectrum (SP) is calculated based on the frame (FI) and linear predictive coding coefficient (LC) of the audio signal (AS). A combination (2,3) configured to filter and convert the frame (FI) to the frequency domain for output and a processed spectrum (PS) based on the spectrum (SP). A low frequency emphasis circuit (4), wherein the processed spectrum (P ) Is emphasized by the low-frequency emphasis circuit (4), and the low-frequency emphasis circuit (4) relies on the linear predictive coding coefficient (LC) of the linear predictive coding filter (2). A controller (5) configured to control the calculation of the spectrum (PS). The invention further provides a corresponding audio decoder, system and method and corresponding computer program for decoding a bitstream including a quantized spectrum and a plurality of linear predictive coding coefficients. (Selection) Figure 1
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| 4G,3G | 06/03/2016 | ISLD-201512-009 | FRAUNHOFER SOCIETY | No | Family Member | ||||
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