1. A method for compressing data vectors sequentially in a respective compression pass, said method comprising: mapping a current data vector to at least one current code vector of at least one codebook in at least one quantization stage; reordering said at least one codebook taking account of at least one intermediate result from a current compression pass and at least one intermediate result from a preceding compression pass; and providing at least one codebook index that is associated in said at least one reordered codebook to said at least one current code vector.