If demodulation isn't the required condition, then don't all bits of metal with a dimension around the quarter wavelength of the signal "receive" in some sense? (Easier to make the point when signal was analogue, would like to see someone argue they "accidentally" decoded digital).

Licence needed even just for audio. One of my first electronics kits, a wired intercom, picked up some RF audio, sounded like a radio play but turned out to be a soap. Always wanted to ask what Q of tuned circuit is the threshold for needing a licence? is this in the law somewhere?

This app also shows an impressive bass response from the Coda 7s given their size but also the typical notch penalty that a ported bass driver gives you. It gives some idea which range I'd need to fill in, if I ever get a sub.

11/11

This is a corrective setting not a tonal preference for excessively trebbly sound, so there's no need to be embarrassed about how it looks on the dials.

It's not just the 15k that's now close to ideal, it's the 4-8k band that's noticeable on vocals and aids intelligibility with dialog.

10/11

Setting the treble on my NAD 302 amp near maximum brings the curve back near the ideal. So it's not just compensating for over 50 hearing loss, and would sound excessively bright for younger people. The measurement shows this is the right setting for this room & positioning.

9/11

Because it replaced a Sony cassette boombox, I'd originally been impressed with the sound and believed the "High Resolution" label KEF applied to their Coda 7 speakers. A lot of that improvement probably came from the change of source to CD.

8/11

When I discovered the HouseCurve app, I used my iPhone to measure my HiFi and found that I should have spent the last 27 years with the treble up much higher than I'd had it, at least in this room.

7/11

When I compared the sound with my Ear Fun Air Pro 4 before and after the Audio Science Review curve, I was convinced that you shouldn't worry about what your eq controls _look like_ - what matters is how close you can get to the ideal curve overall.

6/11

Cheap stereos can have narrow band tone controls so boosting can give a one-note effect to all music which quickly gets tiring.

But I recently discovered that using eq to correct the kit's response can give a noticeable increase in clarity and quality.

5/11

If there's any distortion, increasing the treble will emphasise it because harmonic products of lower frequencies are at multiples of that, so I thought you should keep the tone controls near zero.

4/11

I didn't buy the argument once heard in a HiFi shop that if you can get the sound you like with the tone adjusted wherever, that's fine you can buy that system. I wanted to always have the full range of tone adjustment available to correct for bad source material or environment.

3/11

For a long time, I believed that HiFi tone controls should be set to zero, because if you're paying hundreds of £/$ for amps and speakers, it should sound good without enhancement. At least, use the tone controls conservatively, just a little shallow U for good taste.

2/11

Dark mode 😆

Since AIs are famously bad at logic and maths, lets see what it does when let loose on their Accounts Dept. Or is that excluded?

Amazing article, written the style of The Register which I was not expecting from the FT.

Time to set up a small baking business to get industrial quantities without VAT.