FreeDV
/
LPCNet
mirror of https://github.com/drowe67/LPCNet.git
1
0
Fork 0
Code Issues Releases Wiki Activity

200412a with pitch embedding - better than without pitch embedding

dr-700c-dec
David 2020-04-12 06:54:05 +09:30
parent 91bfe41724
commit 3a40e33704
2 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/700c_train.sh
View File

@ -24,14 +24,14 @@ train=${datestamp}_train
synth_10ms() {
test=$3
c2sim ~/Downloads/${test}.sw --rateKWov ${test}.f32 ${1}
test_lpcnet --mag 2 --frame_size 80 --pre 0 --no_pitch_embedding ${test}.f32 ${datestamp}_${test}_${2}.sw
test_lpcnet --mag 2 --frame_size 80 --pre 0 ${test}.f32 ${datestamp}_${test}_${2}.sw
}
# synth_40ms "filename"
synth_40ms() {
# no prediction, Codec 2 700C at 40ms frame rate (700 bits/s) from c2dec
c2enc 700C ~/Downloads/${1}.sw - --eq --var | c2dec 700C - /dev/null --mlfeat ${1}_dec4.f32
test_lpcnet --mag 2 --frame_size 80 --pre 0 --no_pitch_embedding ${1}_dec4.f32 ${datestamp}_${1}_40.sw
test_lpcnet --mag 2 --frame_size 80 --pre 0 ${1}_dec4.f32 ${datestamp}_${1}_40.sw
}
# experient "c2sim arg for experiment" "experiment label"
@ -43,7 +43,7 @@ experiment() {
c2sim ${train}.sw --ten_ms_centre ${train}_10ms.sw --rateKWov ${train}.f32 ${1}
sw2packedulaw --frame_size 80 ${train}_10ms.sw ${train}.f32 ${train}_10ms.pulaw
train_lpcnet.py ${train}.f32 ${train}_10ms.pulaw ${datestamp}_${2} --epochs ${epochs} --frame_size 80 --no_pitch_embedding
train_lpcnet.py ${train}.f32 ${train}_10ms.pulaw ${datestamp}_${2} --epochs ${epochs} --frame_size 80
dump_lpcnet.py ${datestamp}_${2}_${epochs}.h5
cp nnet_data.c src
make test_lpcnet

2
src/lpcnet.c
View File

@ -162,8 +162,8 @@ void lpcnet_synthesize(LPCNetState *lpcnet, short *output, float *features, int
/* FIXME: Do proper rounding once the Python code rounds properly. */
if (lpcnet->pitch_embedding) {
fprintf(stderr, "embedding\n");
pitch = (int)floor(.1 + 50*features[36]+100);
//fprintf(stderr, "pitch: %d\n", pitch);
assert(pitch >=0); assert(pitch <= 255);
/* latest networks (using the codec 2 pitch estimator) are trained
with pitch estimates between 40 and 255, but due to the pitch