Sarah Perez, TechCrunch:
Amazon confirmed it’s rolling out an optional “Brief Mode” that lets Alexa users configure their Echo devices to use chimes and sounds for confirmations, instead of having Alexa respond with her voice. For example, if you ask Alexa to turn on your lights today, she will respond “okay” as she does so. But with Brief Mode enabled, Alexa will instead emit a small chime as she performs the task.
The mode would be beneficial to someone who appreciates being able to control their smart home via voice, but doesn’t necessarily need to have Alexa verbally confirming that she took action with each command. This is especially helpful for those who have voice-enabled a range of smart home accessories, and have gotten a little tired of hearing Alexa answer back.
I would love an option like this for Siri on all of my devices. It indicates a great deal of trust Amazon has in its own product for them to reduce Alexa’s feedback to a simple audio chime. They must be convinced that users will have enough confidence in Alexa’s abilities for its feedback to be truncated to such an extreme.