allows the user to speak to one computer in the vehicle and one reached over a phone line. The
computer tries to understand the user's command and responds by speaking back or by taking the
appropriate action, e.g. dialing the phone.
OnStar® Personal Calling (OPC) uses a speech recognition system that resides in the
vehicle. When the user presses the dot button, the system states "Ready," and listens for the
user command. The user can speak commands to control the hands-free phone.
Virtual Advisor is a remote speech recognition system that the caller access by making a
phone call. The user connects to Virtual Advisor by requesting it during personal calling
use. The user is then transferred to the Virtual Advisor server and talks to it via a cellular
connection.
The OnStar® speech recognition systems use speech technology that is designed to understand a
wide range of American English speakers. Although there is no one right way to speak English,
the system will work best when users try to modify their pronunciation should they encounter
difficulty. Users who do not obtain good results are advised to try the tips and workarounds found
in this section.
General Tips for Better Speech Recognition
Concern
Tip for Better Result
Noise
Noise may confuse the speech recognition system. You usually
get better performance from the system in quieter conditions:
The HVAC fan creates noise. Turn it down or off for better
speech system performance.
Driving at high speeds creates louder engine noise and wind
noise. You may get better results at lower speeds.
An open window or an open sunroof allows more noise to
enter the vehicle. Close all windows for better results.
Noisy rainstorms can also reduce performance.
If passengers are talking while you use the speech system, it
may be confused by their speech. You will get better results
if all occupants of the vehicle are quiet while the system is
listening for commands.
When to Speak
In Personal Calling, the system is only listening after it prompts
you to speak.
When the system prompts you to speak, you have about 5
seconds to respond. If the system does not hear a response, it
2007 Hummer H3
2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3