(A)Filt Filtering Ways to find the spectral envelope Filter banks: uniform ectral energy envelo filter 1 filter filter 3 output ou output/ filter output Filter banks can also be non -uniform. freq LPC and Cepstral LPC parameters Vector quantization method to represent data more efficiently Feature extraction v 9a(A) Filtering • Ways to find the spectral envelope – Filter banks: uniform – Filter banks can also be non-uniform – LPC and Cepstral LPC parameters • Vector quantization method to represent data more efficiently Feature extraction, v.9a 2 freq.. filter1 output filter2 output filter3 output filter4 output spectral envelop Spectral envelop energy