Amazon Alexa replaces some spoken responses with beeps

Asking Alexa to do something results in a vocal response (unless she's lost her voice), but that's not always really necessary and Amazon is experimenting with replacing Alexa's voice with other sounds to convey a response. As The Verge reports, the change in Alexa's behavior was first discussed on Reddit. One user explained that, after asking Alexa to turn on the lights, she gave the usual "OK" response, but went on to say it would be the last time she would. In future, a beep sound would replace the "OK." It's this switch to non-speech responses that Amazon is calling Brief Mode.