top of page


The Voice Is There. Why Can’t We Understand It?
The voice is there. So why do so many of us still reach for the remote or turn on subtitles?
The problem may not be volume, but everything that happens to dialogue before it reaches us: the mix, the codec, the television, the room and, finally, our own hearing and attention.
In this article, I explore why intelligibility has to be preserved from source to listener — and how technologies such as DTS Clear Dialogue, SpeakBar and Auracast are approaching different parts of the s
Cristina Costa
5 days ago4 min read


From Measuring the Listener to Hearing What They Intend to Hear
What happens when the listener is no longer just at the end of the audio signal chain?
Recent research is beginning to measure not only sound, but also what happens in the body, the inner ear, and the brain while we listen. One experimental system has gone further, using neural attention to amplify the conversation a person was trying to follow.
In this article, I explore the path from measuring the listener to making human attention part of the audio system itself.
Cristina Costa
Jul 34 min read


Could the most important sound in a smart vehicle be a warning?
We usually think of automotive audio as entertainment. But as AI and driver-assistance systems evolve, sound is becoming something more: a way to guide attention, communicate risk, and help us notice what we might otherwise miss. In this article, I explore how audio is becoming part of the vehicle’s intelligence — and why the most important sound may not be music at all.
Cristina Costa
Jul 14 min read


What if the most significant adverse changes humans have made to the planet aren't just visible, but also audible?
A recent study about blue whales led me down an unexpected path. What began as a fascinating discovery about whale songs became a much broader reflection on communication, cities, audio, artificial intelligence, and the changing soundscape we all share. This is the connection I wasn't expecting.
Cristina Costa
Jun 283 min read


AI that matters most isn’t the kind built for everyone — it’s the kind that quietly gives autonomy back to the few who depend on it just to get through the day.
If you don’t rely on a screen reader, captions, or assistive devices, it’s easy to see AI as just another productivity trend.
But for millions of people, a single accessibility update can be the difference between “I can’t do this alone” and “I finally can.”
That’s why this latest Apple announcement on Apple Intelligence–powered accessibility features stood out to me.
Cristina Costa
May 202 min read


While Trump Was in Beijing, China Was Mapping the Human Brain
While the world watched Trump and Xi shake hands over trade and tariffs, something else was happening in Chinese laboratories. The China Brain Project — 3.1 billion yuan, 15 years, seven ministries aligned — is mapping the human brain neuron by neuron, with clinical BCI targets for 2027 and global market leadership by 2030. Your earbud can already read your brain. China just decided that's not enough.
Cristina Costa
May 153 min read


Your earbud can already read your brain. Your work interface has no idea. That's about to change — faster than you think.
Your earbud can already read your brain.
Your work interface has no idea.
That's about to change — faster than you think.
Cristina Costa
May 82 min read


Sound as the "invisible chemistry" of our well‑being
Some of the most powerful influences on our well-being are invisible.
Sound is one of them.
I've been thinking about this for a while. This article is where it landed.
Cristina Costa
Apr 302 min read


The wire is making a comeback. And this time, it's coming through USB-C.
Wired headphones are making a comeback — and it's not just nostalgia. After years of wireless dominating every conversation, the cable is back for a very 2026 reason: USB-C. A universal digital standard that changes what a wired connection can actually deliver. I've been following the signals in the audio industry closely, and the data, the product launches, and the investment decisions are all pointing in the same direction.
Cristina Costa
Apr 92 min read


AI in business: between buying, building, and the invisible risk of bad security practices
“Buy or build” AI is no longer theoretical – it’s a strategic decision that shapes results, capabilities, and competitiveness. In Portugal and across Europe, many managers say they use generative AI, but few companies truly embed it into processes. At the same time, agents like OpenClaw raise new risks: bad habits, pasting internal data into public chats and entering credentials into external tools can expose confidential information without the company noticing.
Cristina Costa
Mar 312 min read


Why Your LinkedIn Profile Is Your Most Powerful Professional Asset — And How to Optimize It
After years working at the intersection of media, technology and audio, I've come to believe that your LinkedIn profile is not just a professional asset — it's your most powerful one. The platform just got smarter. The algorithm now rewards genuine expertise over keyword-stuffed profiles. And with creator tools expanding fast, the line between personal brand and business impact has never been thinner. Here's what's changing, and why it matters.
Cristina Costa
Mar 282 min read


From Apple Watch to Smart Rings: Where Biometric Wearables Are Really Headed
Biometric wearables are quietly moving from “nice gadgets” to big business. This article looks at how Apple Watch helped create a 90–100 billion USD smartwatch market, why smart rings are now growing at 25–30% a year, and, drawing on audioXpress coverage, how devices like Luna’s voice‑enabled ring are turning continuous biometric data into real‑time input for services, personalization, and risk decisions.
Cristina Costa
Mar 243 min read


Consumers Still Prefer People in Customer Service – So What Is AI Really Good For?
Most customers still prefer talking to people in customer service, even as brands invest heavily in AI. Based on recent CX research and audioXpress coverage, this article argues that AI works best when it handles simple, repetitive tasks and powers better tools for human agents — not when it tries to replace them. It explores how voice and conversational AI are being embedded in cars and connected devices, and where only a human can still deliver the trust and problem‑solving
Cristina Costa
Mar 183 min read


From Headphones to Neural Interfaces: What AudioXpress Has Been Showing Us
What if your everyday earbuds were also neural interfaces?
Over the last few years, audioXpress has been showing how fast we’re moving from “better headphones” to brain‑sensing audio devices – from AAVAA’s accessibility headbands to Naqi’s neural earbuds and IDUN’s in‑ear EEG.
I pulled together a few of these articles and some recent neurotech developments to map where audio and neuroscience are converging in 2026 – and why it matters for anyone working in media, product or
Cristina Costa
Mar 143 min read
bottom of page