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jzlv 57bda6c48b [feat] add tinymaix component and demo		2022-11-18 16:05:54 +08:00
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audio	[feat] add tinymaix component and demo	2022-11-18 16:05:54 +08:00
CMakeLists.txt	[feat] add tinymaix component and demo	2022-11-18 16:05:54 +08:00
kws_mdl.h	[feat] add tinymaix component and demo	2022-11-18 16:05:54 +08:00
main.c	[feat] add tinymaix component and demo	2022-11-18 16:05:54 +08:00
README.md	[feat] add tinymaix component and demo	2022-11-18 16:05:54 +08:00

README.md

KWS example

It is simple KWS example for tinymaix. Dataset is MobvoiHotwords
We use 2second audio fbank as input, output 3 classes (0: hi xiaowen, 1: nihao wenwen, 2: background)

audio data preprocess

Original wav is single channel, 16KHz WAV, keyword time length about 1~3s, background wav about 1~10s. We preprocess keyword and background wav to 2 second, and apply some data augment on it.
We calculate 512 piont FFT (easy accelerate via DSP or FPGA IP) every 32ms window, and apply MEL_N=40's mel filters.
Now we get input dataset in shape 64x40x1

model struct

use 3x3 Conv + Nx1 DWConv

model param 8.3KB, bin size 9.2KB, buffer size 5KB.