go-speech

README

go-speech

go-speech is a proof of concept I'm writing to play with neural networks and digital signal processing. Current goal is to do simple speech recognition for words like "yes" or "no".

Working parts are:

• Wav recorder to generate your own corpus
• detect words in Wav file
• split words in 20ms samples
• train network with Fast Fourrier transform data

Usage

go-speech uses dep for dependencies management:

go get github.com/golang/dep/cmd/dep

Install source code:

go get github.com/bjorand/go-speech
cd $GOPATH/src/bjorand/go-speech

Install dependencies:

dep ensure -v

Record a Wav file where your repeat the same word "hello" many times separated by short silences:

go run cmd/recorder/recorder.go -out hellos.wav

Press Ctrl-c to stop and save recording.

You can also record a separate and unique occurrence of "hello" to test our network while training runs.

go run cmd/recorder/recorder.go -out hello-test.wav

For testing purpose during training, record a new file containing a different word like "crazy":

go run cmd/recorder/recorder.go -out crazy.wav

Train neural network and save results:

go run cmd/train/train.go -word hello -in hellos.wav -test hello-test.wav -wrong crazy.wav

TODO

• cmd/recorder: start recording when a word is detected.
• filter signal (21 to 9000hz cover human voice)