Google Duo is about to get a lot better for users with slower connections

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Google Duo logo
Google Duo logo (Image credit: Harish Jonnalagadda / Android Central)

What you need to know

  • Google is introducing a new speech codec called Lyra into apps like Google Duo.
  • Lyra allows for high-quality audio on low-bandwidth networks, which should help reduce data usage while improving video calls.
  • The technology has been tested with over 70 languages to ensure universal access.

Thanks to the COVID-19 pandemic, many personal and work interactions have been thrust into the virtual sphere. Video calling has become the norm for many, which can be a problem for those on weaker broadband connections. Google is hoping to address the issue with its new speech codec that is built to offer higher-quality audio at a lower bitrate, which should make communicating with friends and loved ones on apps like Google Duo much better.

The technology is called Lyra (no it doesn't come with a shapeshifting counterpart named Pantalaimon). This new codec uses advancements in machine learning to improve upon existing techniques, allowing speech to be reproduced using fewer data.

Lyra harnesses the power of these new natural-sounding generative models to maintain the low bitrate of parametric codecs while achieving high quality, on par with state-of-the-art waveform codecs used in most streaming and communication platforms today.

The Google AI blog states that the technology was trained using over 70 different languages to ensure fairness and universal access. Lyra is also designed to operate at just 3kbps while offering better speech reproduction than higher bitrate codecs, a comparison you can find on the blog post. This would ensure that the technology can be utilized in places with less robust connections, giving anyone access to high-quality video calls on Google Duo without using up too much data.

Google AI Lyra Speech Codec Comparison

Source: Google AI (Image credit: Source: Google AI)

With Lyra rolling out on the back-end, better video calls will be available on even the best cheap Android phones. Google hopes that the social impacts of the technology can reach far and wide, expanding to emerging markets and improving on other audio forms like music. With music streaming platforms like Spotify expanding to more global markets, this technology could one day improve streaming quality for millions.

Derrek Lee
Derrek Lee
Managing Editor

Derrek is the managing editor of Android Central, helping to guide the site's editorial content and direction to reach and resonate with readers, old and new, who are just as passionate about tech as we are. He's been obsessed with mobile technology since he was 12, when he discovered the Nokia N90, and his love of flip phones and new form factors continues to this day. As a fitness enthusiast, he has always been curious about the intersection of tech and fitness. When he's not working, he's probably working out.