| 摘要 |
A method is provided for the quantization of a coefficient. The method comprises: supplying a coefficient K; supplying a quantization parameter (QP); forming a quantization value (L) from the coefficient K using a mantissa portion (Am)(QP)) and an exponential portion (x<Ae(QP)>). Typically, the value of x is 2. In some aspects of the method, forming a quantization value (L) from the coefficient K includes L=K*A(QP)=K*Am(QP)*(2<Ae(QP)>). In other aspects, the method further comprises: normalizing the quantization value by 2<N >as follows: Ln=L/2<N>=K*Am(QP)/2<(N-Ae(QP))>. In some aspects, forming a quantization value includes forming a set of recursive quantization factors with a period P, where A(QP+P)=A(QP)/x. Forming recursive quantization factors includes forming recursive mantissa factors, where Am(QP)=Am(QP mod P), and forming recursive quantization factors includes forming recursive exponential factors, where Ae(QP)=Ae(QP mod P)-QP/P.
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