funcwj / android-kws

Source code for implementing KWS demo on android

Simple KWS Demo on Android

Component

• log-filterbank feature extractor in C(according to HTK, seems out of time)
• simple forword network in C(ReLU and Softmax, only fits for the trainning model)
• data visualization by MPAndroidChart
• train the simple model by keras

Notes

• nnet and fbank-extractor interface are called through JNI
• training scripts are in folder scripts, and hdf5tobin.py aims to transfer the model into binary which could be read by the JNI.
• use OpenBlas to optimize forword process like(need to modify the gradle file and add Android.mk and Application.mk):

void forword(vector x, matrix w, vector y, vector b) {
    cblas_scopy(b->size, b->data, 1, y->data, 1);
    cblas_sgemv(CblasRowMajor, CblasNoTrans, y->size, x->size, 1, w->data, x->size, x->data, 1, 1, y->data, 1);
}

Snapshots