Though the music varied widely between regions and artists, the post-punk movement has been characterized by its "conceptual assault" on <answer>rock</answer> conventions and rejection of aesthetics perceived of as traditionalist, hegemonic or <answer>rock</answer>ist in favor of experimentation with production techniques and non-<answer>rock</answer> musical styles such as dub, electronic music, disco, noise, jazz, kraut<answer>rock</answer>, world music and the avant-garde. While post-punk musicians often avoided or intentionally obscured conventional influences, previous musical styles did serve as touchstones for the movement, including particular brands of glam, art <answer>rock</answer> and "[the] dark undercurrent of '60s music".[nb 1] According to Reynolds, artists once again approached the studio as an instrument, using new recording methods and pursuing novel sonic territories. Author Matthew Bannister wrote that post-punk artists rejected the high cultural references of 1960s <answer>rock</answer> artists like the Beatles and Bob Dylan as well as paradigms that defined "<answer>rock</answer> as progressive, as art, as 'sterile' studio perfectionism ... by adopting an avant-garde aesthetic".
As a movement, post-punk has been characterized by its conceptual assault on what conventions?
rock