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Clubhouse is adding spatial audio effects to make users feel like they’re really in the room

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It’s been a busy summer for Clubhouse. The hit social audio app rolled out new messaging features and an Android app over the last few months and now the company is turning its attention to enhancing its core audio experience. Clubhouse announced Sunday that its rooms will now be infused with spatial audio to give the app’s listeners a richer sense of hanging out live with a group of other people.

TechCrunch spoke with Clubhouse’s Justin Uberti about the decision to add spatial audio, which has the effect of making different speakers sound like they’re coming from different physical locations instead of just one spot.

Uberti joined Clubhouse in May as its head of streaming technology after more than a decade at Google where he created Google Duo, led the Hangouts team and most recently worked on Google’s cloud gaming platform Stadia. Uberti also created the WebRTC standard that Clubhouse was built on top of.

“One of the things you realize in these group audio settings is that you don’t get quite the same experience as being in a physical space,” Uberti said.

While Clubhouse and other voice chat apps bring people together in virtual social settings, the audio generally sounds relatively flat, like it’s emanating from a single central location. But at the in-person gatherings Clubhouse is meant to simulate, you’d be hearing audio from all around the room, from the left and right of a stage to the various locations in the audience where speakers might ask their questions.

To pull off the new audio tricks, Clubhouse is integrating an API from Second Life creator Philip Rosedale’s spatial audio company High Fidelity and blending it with the company’s own custom audio processing, tuned for the chat app.

High Fidelity’s HRTF technology, which stands for “Head Related Transfer Function,” maps speech to different virtual locations by subtly adding a time delay between stereo channels and replicating the way that high and low frequencies would sound entering the ear depending on a sound’s origin.

The result, long used in social VR, gives virtual social experiences a sense of physical presence that good records have been pulling off for ages. Think listening to Pink Floyd’s Dark Side of the Moon in stereo with good headphones but instead of sound effects and instruments playing around your head, you’re hearing the people you’re hanging out with arrayed in virtual space.

According to Uberti, Clubhouse’s implementation will be subtle, but noticeable. While the audio processing will “gently steer conversation” to put most speakers in front of the listener, Clubhouse users should have a new sense that people are speaking from different physical locations.

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The new audio features will roll out Sunday to the majority of iOS users, reaching the rest of Clubhouse’s iOS and Android users within the next few weeks. The experience will be available to everyone in time, but users will also have the ability to toggle spatial audio off.

Clubhouse will use the same virtual soundstage techniques to give large rooms a sense of sounding large while making more intimate rooms sound like they’re actually happening in a smaller physical space. And because most people use headphones to participate on Clubhouse, most of the app’s users can benefit from the effects possible through two-channel stereo sound.

“You have this notion of people [being] in a space, in a room… We try to mimic the feel of how it would be in a circle with people standing around talking.”

Uberti also notes that spatial audio could give regular Clubhouse users a less obvious benefit. It’s possible that regular, non-spatialized audio in social apps contributes to the pandemic-era phenomenon of Zoom fatigue. As the human brain processes virtual audio like a phone call or group audio room, it differentiates between speakers in a different way than it would in a natural in-person setting.

“Your mind has to figure out who’s talking. Without spatial cues you have to use timbre… that requires more cognitive effort,” Uberti said. “This could actually make for a more enjoyable experience aside from more immersion.”

It’s too early to know how Clubhouse’s many subcommunities will take to the spatial audio effects, but it could enhance experiences like comedy, music and even ASMR on the app quite a bit.

“Someone tells a joke and it often feels really flat,” Uberti said. “But on Clubhouse, when you feel the laughter come from all around you, it feels a lot like a comedy club experience.”

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Google December Product Reviews Update Affects More Than English Language Sites? via @sejournal, @martinibuster

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Google’s Product Reviews update was announced to be rolling out to the English language. No mention was made as to if or when it would roll out to other languages. Mueller answered a question as to whether it is rolling out to other languages.

Google December 2021 Product Reviews Update

On December 1, 2021, Google announced on Twitter that a Product Review update would be rolling out that would focus on English language web pages.

The focus of the update was for improving the quality of reviews shown in Google search, specifically targeting review sites.

A Googler tweeted a description of the kinds of sites that would be targeted for demotion in the search rankings:

“Mainly relevant to sites that post articles reviewing products.

Think of sites like “best TVs under $200″.com.

Goal is to improve the quality and usefulness of reviews we show users.”

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Google also published a blog post with more guidance on the product review update that introduced two new best practices that Google’s algorithm would be looking for.

The first best practice was a requirement of evidence that a product was actually handled and reviewed.

The second best practice was to provide links to more than one place that a user could purchase the product.

The Twitter announcement stated that it was rolling out to English language websites. The blog post did not mention what languages it was rolling out to nor did the blog post specify that the product review update was limited to the English language.

Google’s Mueller Thinking About Product Reviews Update

Screenshot of Google's John Mueller trying to recall if December Product Review Update affects more than the English language

Screenshot of Google's John Mueller trying to recall if December Product Review Update affects more than the English language

Product Review Update Targets More Languages?

The person asking the question was rightly under the impression that the product review update only affected English language search results.

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But he asserted that he was seeing search volatility in the German language that appears to be related to Google’s December 2021 Product Review Update.

This is his question:

“I was seeing some movements in German search as well.

So I was wondering if there could also be an effect on websites in other languages by this product reviews update… because we had lots of movement and volatility in the last weeks.

…My question is, is it possible that the product reviews update affects other sites as well?”

John Mueller answered:

“I don’t know… like other languages?

My assumption was this was global and and across all languages.

But I don’t know what we announced in the blog post specifically.

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But usually we try to push the engineering team to make a decision on that so that we can document it properly in the blog post.

I don’t know if that happened with the product reviews update. I don’t recall the complete blog post.

But it’s… from my point of view it seems like something that we could be doing in multiple languages and wouldn’t be tied to English.

And even if it were English initially, it feels like something that is relevant across the board, and we should try to find ways to roll that out to other languages over time as well.

So I’m not particularly surprised that you see changes in Germany.

But I also don’t know what we actually announced with regards to the locations and languages that are involved.”

Does Product Reviews Update Affect More Languages?

While the tweeted announcement specified that the product reviews update was limited to the English language the official blog post did not mention any such limitations.

Google’s John Mueller offered his opinion that the product reviews update is something that Google could do in multiple languages.

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One must wonder if the tweet was meant to communicate that the update was rolling out first in English and subsequently to other languages.

It’s unclear if the product reviews update was rolled out globally to more languages. Hopefully Google will clarify this soon.

Citations

Google Blog Post About Product Reviews Update

Product reviews update and your site

Google’s New Product Reviews Guidelines

Write high quality product reviews

John Mueller Discusses If Product Reviews Update Is Global

Watch Mueller answer the question at the 14:00 Minute Mark

[embedded content]

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