steer_vector

Steer Vector

Computation of the steer vector matrices (used in SSL and directional features). The matrice is in shape of num_directions x num_mics x num_bins.

Cmd options

See ./scripts/sptk/compute_steer_vector.py -h.

Usage

1. Linear array

   # DoA in [0, 180]
   # output shape: 181 x 6 x 257
   # 0 deg    *   *   *   *   *   * 180 deg
   ../../scripts/sptk/compute_steer_vector.py \
       --sr 16000 \
       --num-doas 181 \
       --num-bins 257 \
       --geometry linear \
       --linear-topo "0,0.01,0.02,0.03,0.04,0.05" \
       asset/1d_6mic_sv.npy

2. Circular array

   # DoA in [0, 360)
   # output shape: 360 x 4 x 257
   #              *
   #   180 deg *     * 0 deg
   #              *   
   ../../scripts/sptk/compute_steer_vector.py \
       --sr 16000 \
       --num-doas 360 \
       --num-bins 257 \
       --geometry circular \
       --circular-radius 0.05 \
       --circular-around 4 \
       --circular-center false \
       asset/2d_4mic_sv.npy

3. Beam pattern

   ../../scripts/sptk/visualize_beampattern.py --doa-range 360 \
       asset/beam_v1.npy asset/2d_4mic_sv.npy