In addition to  which was frequently cited in this chapter, , , ,  are excellent references (books). The original paper by Princen and Bradley on time-domain aliasing cancellation is . The Princen-Bradley filter bank is a special case of Lapped Orthogonal Transforms (LOT)  for which the overlap is 50%. It is also an orthogonal perfect reconstruction filter bank with first-order FIR polyphase filters. Other papers related to perceptual audio coding include [24,284,53,161,195,17,25,18,200,16,273]. An approximately invertible constant-Q transform, with FOSS matlab code, is described in .