Blog

Microphone arrays to unlock the potential of speech recognition

Posted: 20 July 2016
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Dag Kittlaus, CEO of Viv Labs (viv.ai), has recently given some impressive demonstrations of his latest AI technologies, but one thing that always looks odd during the Viv demonstrations is that he holds the phone very close to his mouth. He’s almost eating his phone every time – it’s like something from Trigger Happy TV. Dag needs to make sure that the quality of captured speech is clear enough for the software to decipher the content of the commands, but it’s not a real-world scenario. We’re not all going to want to "eat" our phones in order to book an airfare for next week.

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Voice interfaces unleash Orange's original vision

Posted: 08 July 2016
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I've just watched a promotional film that Orange recorded in 1999 called The Future's Bright The Future's Orange. It was striking that all the film's ambitions are as relevant to voice interactions today as they were to the world of mobile communications almost two decades ago.

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Hello voice interfaces, goodbye screens and buttons

Posted: 14 June 2016
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A massive change is coming in the way that we engage with the electronics that surround us at home, at work and in the built environment. We will be liberated from computer keyboards, touch screens and apps that keep us glued to our smartphones and laptops. Instead, there will be billions of voice-aware products that we will use to talk to get information and entertainment, and manage our everyday tasks.

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How voice user interfaces and natural language programming will change the way we interface with the world around us

Posted: 07 June 2016
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Microphones capture analog signals and thanks to digitization, have ridden the back of Moore’s Law to get ever smaller and cheaper to the point where the ability to capture decent sound in a tiny device has improved dramatically. This has taken audio capture out of the sound booth and recording studios and democratized it. Thanks to their ubiquity in handsets, laptops, headsets and media tablets, nearly 5 billion MEMS microphones are expected to be shipped in 2016 alone, at an average price point that will deliver four or five of them for less than a Euro or dollar.

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Voice recognition is everywhere, but accurate capture is the key

Posted: 20 May 2016
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Voice user interfaces - you can scarcely avoid the current hype in the media as giants like Amazon, and Google jostle to exploit the explosion of possibilities that advancements in natural language technologies are providing. Today’s neural networks use algorithms to process language through ever-deeper layers of complexity. Machines can now understand the meaning and intent of spoken words with unprecedented levels of accuracy. This has sparked a revolution for the power of voice.

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Why voice user interfaces with beamforming microphones work better with xCORE-VOICE

Posted: 28 April 2016
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We love the Amazon Echo at XMOS. It’s a new-to-the-world category of product, brimming with possibilities as a digital assistant, a hub for home automation as well as a point of presence to allow us to access all of Amazon’s goods and services.

At its heart is a piece of technology known as a smart microphone. This enables the Echo to capture voice samples with a high degree of accuracy before transmitting them to the Amazon Voice Services in the cloud where the query is processed before the answer is returned to the device in the form of Alexa’s soothing tones contained in an MP3 file.

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The xCORE 64-bit accumulator and memory bus

Posted: 03 November 2015
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In a previous blog I discussed the new DSP capabilities of the xCORE-200 architecture at a very high level. I'd now like to look at some of those DSP capabilities in more detail.

XMOS xCORE-200 devices are built around a 32-bit fixed point architecture, which includes a 64-bit accumulator for enhanced dynamic range. This architecture was chosen because it gives flexibility to implement many different forms of fixed-point and integer arithmetic efficiently.

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"Does anyone want any toast?"

Posted: 28 October 2015
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Accurate, accessible and economical Voice User Interface (VUI) design has been slow to emerge. Our ability to interpret dialogue of varying pronunciation, accent, speed and grammatical correctness is something that we humans take for granted from an early age, but that has proved elusive for machines. Nonetheless, VUI has become a mainstay of our predicted future - who can forget HAL 9000 or the "Talkie toaster" (immortalized by Grant Naylor in the BBC TV series "Red Dwarf"? http://www.youtube.com/watch?v=LRq_SAuQDec)

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It’s not just about the MIPS!

Posted: 27 October 2015
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Designing electronic products today is a highly complicated challenge that goes well beyond the old question of "How many MIPS does the microprocessor have?" Designers must solve the fundamental requirements of their products, while meeting strict international standards, and integrating innovative features to support IoT (Internet of Things) technologies. And consumer products also need to be fashionable as well.

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