Plug-in Solar and the PV Detector Van

Let’s start with the good news. It looks as if the UK is about to make it legal to buy and install plug-in solar panels.  That’s basically a solar panel packaged with electronics, that lets you plug it directly into an ordinary 13A socket in your home to generate some of your own electricity.  The bad news is that DESNZ ( the Department for Energy and Net Zero) want to regulate plug-in solar units in much the same way as TVs used to be regulated.  These are DIY products which you can install yourself, but when you buy one, DESNZ wants to be notified, presumably so they can check that you’ve plugged it in properly and not broken anything.  Their proposal reads like the old TV Licensing regime, which then sent detector vans around to make sure you had a licence.  Except in this case, they’d be PV vans to check your Photo Voltaics.

There’s a consultation on whether that’s a good idea at https://www.gov.uk/government/consultations/plug-in-solar, but in typical DESNZ fashion, it opened last week and closes next week.   So if you’ve got an opinion, you have until 30th June to respond.

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Arturo Ui, Electric Guitars and Hearing Aids

The Royal Shakespeare Company are currently running an excellent production of Brecht’s play “The Resistible Rise of Arturo Ui” at the Swan Theatre in Stratford-upon-Avon, which I can thoroughly recommend.   What I didn’t expect when I went to see it last week, is that I’d also learn quite a few useful things about user experience design for hearing aids and assisted listening.

The Resistible Rise of Arturo Ui is  a parable of Hitler’s rise to power, conceived as a parallel story based on Chicago gangsters fighting for control of the vegetable trade.  It’s an important piece, not least because of the warning of its final line “The beast that bore him is in heat again”.  But enough of UI for the moment.  Here’s what I learnt about User Interfaces for hearing aids.

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Apple’s AirPod dilemma

What do you do if you’ve just designed a great product, but then realised that it’s missing a key feature that everyone is about to start asking for?  That’s the dilemma Apple had with its latest AirPods Max 2 headset, which is missing a new Bluetooth capability called Auracast.  Auracast is rapidly approaching critical mass – appearing in other consumer products a lot faster than Apple had anticipated.

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Image by u_tu0otx0ph2 from Pixabay

TVs take the lead in Audio Innovation

It’s almost ten years since the last major innovation in consumer audio, which was Apple’s launch of its AirPods back in 2016.  Those arrived on the market ten years after the underlying Bluetooth specification which made wireless audio streaming possible, which demonstrates the fact that it can take quite a long time to bring new technologies to market.  This year looks as if it will be the tipping point for the next big audio innovation to go mainstream.  It’s something called Auracast and this time, the innovation is being spearheaded by the TV industry.

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Full Bandwidth Audio – the next big audio market

Within the audio industry, both hardware manufacturers and content providers have have reached an interesting impasse, which is how to extract more money from consumers.  The bulk of users appear happy with the audio quality they’re getting from their current hardware, as well as being satisfied with their audio streaming services.  Unlike the video streaming industry, which is spending billions on generating new content to attract subscribers, audio streamers are largely relying on their back catalogues.  Whilst manufacturers and streamers have tried differentiation through enhanced quality, specifically by providing hi-res or lossless codecs, they’ve found the take-up disappointing, mainly because few consumers can notice the difference.

This poses a quandary for the industry.  They’ve invested significant amounts of money developing new, high quality codecs, which can sample audio at rates which only bats are likely to hear.  The components industry has also poured cash into developing new audio transducers, producing micro-electro-mechanical system (MEMS) speakers, capable of rendering audio at frequencies way beyond the limits of human hearing.  This technology has led to a new generation of microphones with frequency responses which are flat up to 100kHz – a major step forward from common studio microphones, which typically have frequency responses that start falling off at 14kHz.  Once again, however, what they capture is beyond human hearing. 

It’s all very clever technology. But nobody really knows what to do with it.  In the absence of any credible ideas, the the audio industry, which has done what it does best – coin a new initialism of FBA to describe the experience as Full Bandwidth Audio.  But, at that point, they have stumbled.  With the exception of a small, audiophile market, who will pay obscene amounts of money to convince themselves they have super-human hearing, the audio industry has found little consumer interest in purchasing something they can’t hear.  They desperately need to find a new market where consumers will shell out money for new equipment and new subscriptions.

As often happens in audio, when the industry incumbents struggle with innovation, development appears from outside, where a totally different range of companies have started exploring the potential new markets which could be created by embracing Full Bandwidth Audio.  In this case, that innovation is coming from a rather unlikely source – the pet industry.

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The story of Auracast broadcast audio

If you’ve not heard of Auracast, it won’t be long until you do.  It’s a new audio feature for Bluetooth products which lets lots of people listen to the same audio stream.  The concept came from the hearing aid industry, which wanted to find a way of expanding the experience that people had with Telecoil hearing loops into the wider ecosystem, bringing the ability to share audio from phones and TVs.  They felt that if this could be done with Bluetooth, it would also make it far easier to install hearing assistance in public venues, such as theatres, community halls and churches, as well as providing travel information to your earbuds or headphone at airports, bus shelters and train stations.  Today, thousands of venues around the world have already installed Auracast transmitters.  It’s supported by the latest Samsung and Pixel phones, and is integrated in new Samsung, LG and Panasonic TVs.  The latest hearing aids can listen to these Auracast signals, and a growing range of consumer earbuds and headphones can also receive them.  Although it started as a feature to help people with hearing loss, over the course of its development it’s been enthusiastically supported by the wider audio industry, bringing a new experience to everyone.

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