首页>
外国专利>
A method of encoding and decoding an audio signal, an audio coder, an audio player, such an audio coder and an audio player such a storage medium for storing the audio system and an audio stream comprising
A method of encoding and decoding an audio signal, an audio coder, an audio player, such an audio coder and an audio player such a storage medium for storing the audio system and an audio stream comprising
The coded bit stream (AS) of the coded audio signal (x) including a parametric representation of an audio signal is provided. To one component of the parametric representation comprises tracks of linked sinusoidal components (CS), where is subsequently linked components are differentially encoded with the already determined from the parameters of the signal components been linked. The coder scrambles the differentially encoded in frequency and / or amplitude values by mapping the differential values in the differential value other (CSe) (18). By changing these values, the bit stream decoding is still possible, however, to generate a track having a random frequency and / or amplitude variation. Therefore, the signal will be degraded.
展开▼
