Skip to main content

Here’s why Amazon’s Super Bowl ad won’t trigger Alexa

South Park famously annoyed the world by triggering Echo and Google Home devices with familiar wake words. When Amazon’s at the wheel, however, the company is able to ensure that Alexa stays quiet using a method called acoustic fingerprinting.

In the lead up to the Super Bowl, the company’s offered a (relatively) easy-to-understand breakdown of why its celebrity-laden ads won’t wake up Alexa during the big game. With its own ads, the company adds a fingerprint of the audio, which is stored on-device.

Given the Echo’s storage limitations, additional fingerprints are stored in the cloud, where the assistant can cross check things before waking. The system generally works pretty well, though complications can occur in, say, a noisy environment (what Super Bowl party has ever been noisy, though?) in which case a longer clip is required to do its job.

Things, naturally, get a bit trickier when Amazon isn’t producing the ad (as South Park fans can attest). In that case, the system cross-checks audio with different users.

“If the audio of a request matches that of requests from at least two other customers, we identify it as a media event,” the company explains. “We also check incoming audio against a small cache of fingerprints discovered on the fly (the cached fingerprints are averages of the fingerprints that were declared matches). The cache allows Alexa to continue to ignore spurious wake words even when they no longer occur simultaneously.”



from TechCrunch https://tcrn.ch/2BaH4rO
via IFTTT

Comments

Popular posts from this blog

Max Q: Psyche(d)

In this issue: SpaceX launches NASA asteroid mission, news from Relativity Space and more. © 2023 TechCrunch. All rights reserved. For personal use only. from TechCrunch https://ift.tt/h6Kjrde via IFTTT

Max Q: Anomalous

Hello and welcome back to Max Q! Last week wasn’t the most successful for spaceflight missions. We’ll get into that a bit more below. In this issue: First up, a botched launch from Virgin Orbit… …followed by one from ABL Space Systems News from Rocket Lab, World View and more Virgin Orbit’s botched launch highlights shaky financial future After Virgin Orbit’s launch failure last Monday, during which the mission experienced an  “anomaly” that prevented the rocket from reaching orbit, I went back over the company’s financials — and things aren’t looking good. For Virgin Orbit, this year has likely been completely turned on its head. The company was aiming for three launches this year, but everything will remain grounded until the cause of the anomaly has been identified and resolved. It’s unclear how long that will take, but likely at least three months. Add this delay to Virgin’s dwindling cash reserves and you have a foundation that’s suddenly much shakier than before. ...

What’s Stripe’s deal?

Welcome to  The Interchange ! If you received this in your inbox, thank you for signing up and your vote of confidence. If you’re reading this as a post on our site, sign up  here  so you can receive it directly in the future. Every week, I’ll take a look at the hottest fintech news of the previous week. This will include everything from funding rounds to trends to an analysis of a particular space to hot takes on a particular company or phenomenon. There’s a lot of fintech news out there and it’s my job to stay on top of it — and make sense of it — so you can stay in the know. —  Mary Ann Stripe eyes exit, reportedly tried raising at a lower valuation The big news in fintech this week revolved around payments giant Stripe . On January 26, my Equity Podcast co-host and overall amazingly talented reporter Natasha Mascarenhas and I teamed up to write about how Stripe had set a 12-month deadline for itself to go public, either through a direct listing or by pursuin...