The method involves taking into account the effects of a transition from the short duration spectral region into the long duration spectral region on energy processes in the short duration spectral region and corresp. influencing the subsequent encoding. In the psychoacoustic model, the effect of the transition is first estimated for the individual components of the disturbance energies. Finally, the permissible noise in the short duration spectrum is computed from the effect of the transition. The associated arrangement contains a device for forming the short duration spectrum from the audio signals, an analyser and a quantising and encoding device.
Audio signal coding through short time spectra and a psychoacoustical model