spectral_feature

Spectral Feature

Computation of the spectrogam & mel-filter bank features.

Cmd options

See ./scripts/sptk/compute_{spectrogram,fbank}.py -h

Usage

1. Spectrogram

   # 257-dim log spectrogram
   echo "egs asset/egs.wav" | ../../scripts/sptk/compute_spectrogram.py \
       --frame-len 400 \
       --frame-hop 256 \
       --round-power-of-two true \
       --center true \
       --apply-log true \
       - feats.ark
   # visualize and check
   ../../scripts/sptk/visualize_tf_matrix.py \
       --input ark --cmap jet --frame-hop 256 \
       feats.ark

2. Fbank

   # 80-dim log fbank
   echo "egs asset/egs.wav" | ../../scripts/sptk/compute_fbank.py \
       --frame-len 400 \
       --frame-hop 256 \
       --round-power-of-two true \
       --center true \
       --apply-log true \
       --num-bins 80 \
       - feats.ark
   # visualize and check
   ../../scripts/sptk/visualize_tf_matrix.py \
       --input ark --cmap jet --frame-hop 256 \
       feats.ark