22 Nov, 2020
This is the first of a three-part blog series that explores the role that audio plays in our evolving relationship with machines
Face it, we now spend much of our time every day interacting with and commanding machines. The efficacy those interactions depends largely on the interface. When that interface is simple, fast, and intuitive, the result is satisfying and useful. To cite one common example, everyone can work a toaster — or a golf cart or a vacuum cleaner.
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But when operating the machine requires considerable knowledge, failure becomes not only possible, but often likely. We know what we want the machine to do, but we have to translate that intent into a complex series of button pushes that the machine can understand. We often rely on trial and error to learn what combinations of buttons will deliver the desired result.
For example, ever tried to soften a cold stick of butter or a pint of ice cream in the microwave? You’ll probably have to guess at the time and power settings, and watch carefully to make sure your food isn’t getting too warm — because what can you do with a fully melted bowl of ice cream?
Every year, the machines are becoming exponentially smarter. But we’re not. Tech entrepreneur Elon Musk recently addressed the question in a talk with tech journalists Kara Swisher and Walt Mossberg.
“We’re already a cyborg,” he said. “With your phone, you can answer any question, video conference with anyone anywhere… The only constraint is input/output.” If you’ve ever used your TV’s remote control to search for something using an on-screen keyboard, you definitely know the pain of a low-bandwidth interface.
While direct Machine/Brain Interfaces are likely many years away, today’s “smart” devices are sidestepping the issues of interface bandwidth and intent translation by adopting the most human of interfaces: speech.
While advances in machine learning and AI have made speech-to-intent services surprisingly accurate and robust, many devices still struggle to clearly hear our voice in the first place. Many voice-controlled devices still require humans to change their behavior to accommodate the limitations of the interface.
In part two of our AoT blog series, we’ll explore the unique challenges of sound-based interfaces and learn why we’re just now seeing consumer products that can approach and even exceed the limits of human perception.
DSP Concepts, Inc. provides embedded audio digital signal processing solutions delivered through its Audio Weaver® embedded processing platform. DSP Concepts specializes in microphone as well as playback processing and is the leading supplier to top tier brands in consumer and automotive products.
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