Wake Word to Initiate a Genie Call

A wake word is a phrase that activates a device. The phrase "OK Vocera" is the wake word for the Minibadge.

Following are the features of the wake word:

When you wear a C1000 Minibadge and utter the wake word "OK Vocera," the C1000 Minibadge wakes up and invokes the Genie.
The wake word is used only to start a call, but not to end the call. You must manually press the call button to end the genie session.
The wake word uses the C1000 Minibadge microphone, irrespective of headset connection status.

The wake word does not invoke the Genie during the following scenarios:

An active audio session is ongoing. The wake word module is turned off to save power and is turned back on when the audio session is complete.
the C1000 Minibadge is in DND mode.

Enabling Wake Word

The badge property, C1.EnableHotword is used to enable the voice command "OK Vocera" to initiate a Genie call.

After your administrator enables the wake word, the C1000 Minibadge reboots. When the option is enabled, the C1000 Minibadge listens for a spoken phrase. When that phrase is detected, the C1000 initiates a call to the Genie.

Wake Word Privacy

The wake word detection and processing occur on the wake word detection chip within the badge and the data is stored only in the volatile memory of the chip.

After detecting the wake word, the utterance is extracted to the Minibadge to check if the utterance is from the person who wears the badge or not using the beam forming algorithm. That is, the data is not extracted to be processed externally by the Voice Server or a cloud solution.

The wake word sensing microphone is always on, and a continuous stream of audio is captured in the volatile memory of the chip to process the audio for detecting the wake word. This memory holds one second of audio at any time and is overwritten constantly as the audio is streamed. If the badge is in a call, the audio continues to be streamed to the volatile memory without processing. The wake word detection chip and badge memory are cleared when the badge is powered down. However, the last 20 utterances remain in the NAND Flash memory of the badge even after reboot.