Speech Recognition

Introduction

	Robotino can now comprehend basic human speech commands. This feature is integrated in the v2.4 OS for both 1GB and 4GB CF cards. The setup is preconfigured for a Logitech ClearChat PC Wireless Stereo Headset. Read below how to modify the setup to fit your audio device.	Package links CF card images Julius

Speech recognition

Recording data for speech recognition training

Creating the acoustic model yourself

Setup audio devices

When the Logitech ClearChat headset is plugged into Robotino's USB port, the udev rule "/etc/udev/rules.d/99-robotinosr.rules" matches

SUBSYSTEMS=="usb", KERNEL=="hiddev[0-9]*", SYSFS{idVendor}=="046d", SYSFS{idProduct}=="0a12", RUN+="/usr/local/OpenRobotinoAPI/1/daemons/srd.sh start", SYMLINK+="headset"

udev runs "/usr/local/OpenRobotinoAPI/1/daemons/srd.sh start"

Copy "/etc/udev/rules.d/99-robotinosr.rules" to "/etc/udev/rules.d/99-myheadset.rules" and modify the new rule to fit your hardware. How to do this can be read here.

"/usr/local/OpenRobotinoAPI/1/daemons/srd.sh" uses the "/usr/local/OpenRobotinoAPI/1/daemons/configure_alsa.sh" to write a valid alsa configuration to "/root/.asoundrc". The audo interface from which card and device number are taken is given in "/etc/robotino/sr/devicename". Modify this file to match the output from "aplay -l".

Test the setup by running "/usr/local/OpenRobotinoAPI/1/daemons/configure_alsa.sh" and see if "/root/.asoundrc" is reasonable. Then run "/usr/local/OpenRobotinoAPI/1/daemons/srd.sh start". If this works test your udev rule by detaching and reattaching your USB audio device and see if srd comes up.