Patent ID: 9343074
Filing Date: 2016-05-17
CPC Classification: G10L

Claim Text:
1. An apparatus for generating an audio output signal based on an encoded audio signal spectrum, wherein the apparatus comprises: a processing unit for processing the encoded audio signal spectrum to acquire a decoded audio signal spectrum the decoded audio signal spectrum comprising a plurality of spectral coefficients, wherein each of the spectral coefficients comprises a spectral location within the encoded audio signal spectrum and a spectral value, wherein the spectral coefficients are sequentially ordered according to their spectral location within the encoded audio signal spectrum so that the spectral coefficients form a sequence of spectral coefficients, a pseudo coefficients determiner for determining one or more pseudo coefficients of the decoded audio signal spectrum, each of the pseudo coefficients comprising a spectral location and a spectral value, a spectrum modification unit for setting the one or more pseudo coefficients to a predefined value to acquire a modified audio signal spectrum, a spectrum-time conversion unit for converting the modified audio signal spectrum to a time-domain to acquire a time-domain conversion signal, a controllable oscillator for generating a time-domain oscillator signal, the controllable oscillator being controlled by the spectral location and the spectral value of at least one of the one or more pseudo coefficients, and a mixer for mixing the time-domain conversion signal and the time-domain oscillator signal to acquire the audio output signal, wherein at least one of the processing unit, the pseudo coefficients determiner, the spectrum modification unit, the spectrum-time conversion unit, the controllable oscillator and the mixer comprises a hardware implementation.