Decoding audio signals, audio signal encoder, for decoding a procedure audio signal, method for encoding an audio signal and computer program using a dependent frequency tuning of a coding context

A decoder audio signal (150; 240) for generating a representation of decoded audio signal (154) based on a representation of the encoded audio signal (152) comprising a representation of encoded spectrum (aq spectral_data []) and information distortion encoded time (tw data []), where the decoder audio signals comprising: a decoder spectral values ​​based on the context (160) configured to decode a code word (ACOD m) describing one or more spectral values ​​or at least a portion (m) of a digital representation of one or more spectral values ​​depending on a state of the context, to obtain decoded spectral values ​​(162, 297, dec ac x []); one state determiner context (170; 400) configured to determine a current state context - (164 c) depending on one or more previously decoded spectral values ​​(162, 297); a converter the frequency domain to the time domain with time warping (180) configured to generate a representation in the time domain with time warping (182) of an audio frame given on the basis of a number of spectral values decoded (162, 297) associated with the given box and provided by the decoder spectral values ​​based on the context and information depending on the time warping audio; where the state determiner context (170; 400) is configured to adapt the determination of the state of context to a change of a fundamental frequency between subsequent audio frames.