Patent ID: 8756056
Filing Date: 2014-06-17
Classification: G10L

Abstract:
1. An apparatus for determining a quantizer step size for quantizing a signal comprising audio or video information, the apparatus comprising: a provider for providing a first quantizer step size and an interference threshold; a first determiner for determining a first interference introduced by the first quantizer step size; a first comparator for comparing the interference introduced by the first quantizer step size with the interference threshold; a selector for selecting a second quantizer step size which is larger than the first quantizer step size if the first interference introduced exceeds the interference threshold; a second determiner for determining a second interference introduced by the second quantizer step size; a second comparator for comparing the second interference introduced with the interference threshold or the first interference introduced; wherein the second quantizer step size is stored, if the second interference introduced is smaller than the first interference introduced or is smaller than the interference threshold, wherein, in a further iteration step, a further quantizer step size is selected, the further quantizer step size being larger than the second quantizer step size, a quantizer for quantizing the signal with the stored second quantizer step size if an interference introduced by the further quantizer step size is larger than the first interference introduced or is larger than the interference threshold, and for quantizing the signal with the further quantizer step size, if the interference introduced by the further quantizer step size is smaller than the second interference introduced or is smaller than the interference threshold, wherein at least one of the provider, the first determiner, the first comparator, the second determiner, the second comparator, the selector, and the quantizer comprises a hardware implementation.