SIMULATION OF QUADRATURE MIRROR FILTER
SIMULATION OF QUADRATURE MIRROR FILTER SIMULATION OF QUADRATURE MIRROR FILTER AIM: To simulate the frequency response of quadrature mirror for a two channel filter band. THEORY: The QMF filter is used in the sub-band coding. This filter can be used for reducing aliasing. This is a multirate digital filter structure that employes 2 decimeter in signal synthesis section. The low pass and high pass filters in the analysis section have impulse response filters (n) and (n) respectively. Similarly the low pass filter and high pass filters contained in the synthesis section have impulse response filters (n) and (n) respectively. To reduce aliasing the synthesis section have impulse response (n) and (n) respectively, (?)= (?) (?)=- (?-?) Since (?) and (?)is a mirror image filters H0(?)=H(?) H1(?)=H(?- ?) G0(?)=2H(?) This is due to the above design, aliasing effects cancels. ALGORITHM: 1. Generate the low pass filter 2. Generate the high pass filter 3. Compute the gain response of two filters 4...