Technical discussions related to Audio Signal Processing (digital effects, acoustics, noise reduction, musical signal processing, etc).
Hi all, I would like to ask you regarding MDCT specially ,as we know MDCT is DCT (type-4) with 50% overlap on consective block applied in MPEG-4 AAC low delay.I could not get proper understanding how it works internally. Example: MDCT =[ DCT(type-4)* TDAC * Window ] Cosider for example we have MDCT of 2n inputs and n outputs and this n output is equal to DCT (type-4) inputs.. I would like to know how this is mapped as inputs to DCT(type-4) and how TDAC is avoided.. I have gone through the web site as mentioned above http://en.wikipedia.org/wiki/Modified_discrete_cosine_transform. I would like to have better and clear explanation then this.Please give some web sites or book names which will be available with this topic. Thank you, Deep