Patent ID: 7464027

Claim:
A device for quantizing an information signal of a sequence of information values, the information signal being an audio signal and the information values being audio values, comprising: a processor for applying a psycho-acoustic model to a block of audio values of a sequence of audio values; a calculator for calculating a version of a parameterization of a parameterizable filter based on a result of applying the psycho-acoustic model to the block; a filter for frequency-selective filtering the sequence of audio values to obtain a sequence of filtered audio values; a quantizer for quantizing the filtered audio values to obtain a sequence of quantized audio values by means of a quantizing step function which maps the filtered audio values to the quantized audio values, and wherein the quantizing step function is more steep below a threshold information value than above the threshold information value; wherein the filter for frequency-selective filtering comprises: a filter for filtering a predetermined block of audio values of the sequence of audio values with the parameterizable filter using a predetermined parameterization depending in a predetermined manner on the version of the parameterization to obtain a block of the filtered audio values.