Fig. 5From: Efficient multichannel acoustic echo cancellation using constrained tap selection schemes in the subband domainGini indices for a 10-s segment from the soundtrack of a five-channel movie signal; (a) spectral sparsity in each channel and joint spectro-spatial sparsity, (b) temporal sparsity in each channel and joint spatio-temporal sparsity, (c) spatial sparsity in each subband and frame, (d) joint spectro-temporal sparsity in each channel and joint spectro-spatio-temporal sparsityBack to article page