2006 Lexus GX 470 Owners Manual - Page 502
2006 Lexus GX 470 Manual
Page 502 highlights
IN CASE OF AN EMERGENCY Say each one of the syllables in the word clearly. Do not omit any of the syllables. Be sure to articulate each sound in the word. The voice recognition system can have trouble recognizing a word when final consonants are not pronounced. It may be helpful to emphasize the final consonant. If the system is confusing 2 commands that are similar (e.g. "Dial" and "Redial"), be sure to pronounce the distinction. In this example, "Redial" may be recognized better if the first syllable is emphasized and slightly lengthened. Avoid clipping short words and syllables. Instead, try lengthening the short words and syllables, and slow down your overall speech rate a little. You can also try lengthening different syllables of the word. Try speaking louder. When there is a lot of background noise, the system has more trouble hearing your speech. If, however, you find that you are speaking so loud that you are stressing your voice, speaking somewhat quieter but with clear pronunciation may help. 477