Automatic speech recognition (ASR) feedback for head mounted displays (HMD)
Feedback mechanisms to the user of a Head Mounted Display (HMD) are provided. It is important to provide feedback to the user when speech is recognized as soon as possible after the user utters a voice command. The HMD displays and/or audibly renders an ASR acknowledgment in a manner that ensures the user that the HMD has received/understood his voiced command.
1. A method of acknowledging a voice command, comprising:
receiving, by a headset computer, a voice command;
interpreting, by the headset computer, the voice command; and
acknowledging, by the headset computer, the received voice command, in response to interpreting the voice command, by providing visual feedback to the user on a display such that the visual feedback is presented to the user on of (a) within 500 mS of when the voice command is interpreted and (b) within two cycles of a frame rate of the display of when the voice command is interpreted.
2. The method of claim 1 , further including converting, using a microphone, an utterance corresponding to the voice command into an electrical signal.
3. The method of claim 1 , wherein interpreting the voice command includes determining if the voice command is a member of a predetermined suite of voice commands.
4. The method of claim 1 , wherein acknowledging the received voice command includes presenting an automatic speech recognition (ASR) notification clue.
5. The method of claim 4 , wherein the ASR notification clue includes a visual clue.
6. The method of claim 5 , wherein the visual clue is presented within 500 mS of when the utterance is interpreted.
7. The method of claim 5 , wherein the visual clue is instantiated on a display within two cycles of the frame rate of the display.
8. The method of claim 5 , wherein the visual clue remains on the display for a predetermined time after the visual clue is instantiated, and removed from the display after the predetermined time has elapsed.
9. The method of claim 4 , wherein the ASR notification clue includes an audio clue.
10. The method of claim 9 , wherein the audio clue is a chirp.
11. An apparatus for acknowledging a voice command, comprising:
a headset computer, including a processor, configured to:
receive a voice command;
interpret the voice command; and
acknowledge the received voice command, in response to interpreting the voice command by providing visual feedback to the user on a display such that the visual feedback is presented to the user on of (a) within 500 mS of when the voice command is interpreted and (b) within two cycles of a frame rate of the display of when the voice command is interpreted.
12. The apparatus of claim 11 , wherein the headset computer is further configured to convert, using a microphone, an utterance corresponding to the voice command into an electrical signal.
13. The apparatus of claim 11 , wherein the headset computer is further configured to determine if the voice command is a member of a predetermined suite of voice commands.
14. The apparatus of claim 11 , the headset computer is further configured to present an automatic speech recognition (ASR) notification clue.
15. The apparatus of claim 14 , wherein the ASR notification clue includes a visual clue.
16. The apparatus of claim 15 , wherein the visual clue is presented within 500 mS of when the utterance is interpreted.
17. The apparatus of claim 15 , wherein the visual clue is instantiated on a display within two cycles of the frame rate of the display.
18. The apparatus of claim 15 , wherein the visual clue remains on the display for a predetermined time after the visual clue is instantiated, and removed from the display after the predetermined time has elapsed.
19. The apparatus of claim 14 , wherein the ASR notification clue includes an audio clue.
20. The apparatus of claim 19 , wherein the audio clue is a chirp.