diff options
Diffstat (limited to 'speech_utils/init.lua')
| -rw-r--r-- | speech_utils/init.lua | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/speech_utils/init.lua b/speech_utils/init.lua new file mode 100644 index 0000000..5148664 --- /dev/null +++ b/speech_utils/init.lua @@ -0,0 +1,23 @@ +nerv.speech_utils = {} + +function nerv.speech_utils.global_transf(feat_utter, global_transf, frm_ext, gconf) + local res = {} + local step = frm_ext * 2 + 1 + -- expand the feature + local expanded = gconf.cumat_type(feat_utter:nrow(), feat_utter:ncol() * step) + expanded:expand_frm(gconf.cumat_type.new_from_host(feat_utter), frm_ext) + -- rearrange the feature (``transpose'' operation in TNet) + local rearranged = expanded:create() + rearranged:rearrange_frm(expanded, step) + -- prepare for transf + local input = {rearranged} + local output = {rearranged:create()} + -- do transf + global_transf:init(input[1]:nrow()) + global_transf:propagate(input, output) + -- trim frames + expanded = gconf.mmat_type(output[1]:nrow() - frm_ext * 2, output[1]:ncol()) + output[1]:copy_toh(expanded, frm_ext, feat_utter:nrow() - frm_ext) + collectgarbage("collect") + return expanded +end |