It has been just under 50 years since I sat in a race car tire designer's office discussing my tire needs. Learned quite a bit. Another good source was the Journal of rubber chemistry and tire technology.
The only time I looked at a tire thread... Well these are not the only threads with opinions unsupported by experience, knowledge or even reality.
The only time I looked at a tire thread... Well these are not the only threads with opinions unsupported by experience, knowledge or even reality.
Any cheap VNAs that work in the audio range?
I have done repeated measurements with REW with a speaker in different positions, and I noticed the bass region had a better spectrogram in certain positions (I had already placed that speaker by ear and found that the spectrogram got worse after moving it). But it was not mm. If you are moving the speakers only by mm then you are probably missing a lot of potentially good areas.
I have done repeated measurements with REW with a speaker in different positions, and I noticed the bass region had a better spectrogram in certain positions (I had already placed that speaker by ear and found that the spectrogram got worse after moving it). But it was not mm. If you are moving the speakers only by mm then you are probably missing a lot of potentially good areas.
I don't know who is old enough here to remember but televisions in the 50's and 60's were like British cars. It took a week or so before the chassis was out on the floor for tube swapping and pot tweeking. One of my earliest memories was sitting on the floor watching a Michelin docu-advert while my father played with our B&W Zenith.
I don't think there are any cheap ones that cover the LF range. Not that I have found anyway. It depends what you want to do, but the Red Pitaya STEMLab boards might work:
Bode analyzer
Yeah, you can order some extreme performance tires pre-shaved from Tire Rack now in the US. Good for a couple weekends on track and that's probably it.
Here are pages of Stirling Traye's talk: Now you know what I know! '-)
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We had a 1946 (I think) RCA console set. Very advanced as it not only had a record changer but also a breadbox size separate UHF tuner. At my first use there were only two TV stations then Channel 3 moved to 2 and 4 came on the air, 11 stayed where it was. IFR 13 the educational station came on with a real hit show "Childrens Corner" hosted by Josey Cary (really Viccary but too ethnic for the management) assisted by Fred Rogers.
The set worked quite reliably with occasional tube changes. UHF adapter not ßo much. The set got retired mid 60's.
Not to mention magic rabbit ears tweaks. If only we had had myrtle blocks!
He meant the opposite. Maybe it's some syntactical difference between Est Cost and West Cost? 🙂
I too watched the race live and also felt bad for Leclerc. More to the point is Pirelli "officially" confirms the difference between the compounds, about .5 to 1 sec a lap. What we're all getting at is this:
- Entry-level physics: contact area vs pressure, but that's not the whole truth
- Mid-level physics: different compounds introduce different friction, therefore grip, therefore lap time, but that's still not the whole truth
- High-level physics: don't ask me, I shop for bargain tyres. Maybe torsional stiffness of the frame? Other "snake oil"? How about tuning the chassis to the tyres?
All I know is that tyre prices are going up.
I think it's down to inflation!
Inflation, harhar!
But prices are crazy. Last summer I realized my tires were worn excessively (when I was hydroplaning at 120Kmph) so bought 4 new Contis, cost me over a grand, would have been over $1300 for Michelins.
I asked this a minute ago, but think no one noticed. Anyone here have experience with OMS/production software?
Also, I don't think the car analogy works at all for high end audio. I think the faster you go the more you're objective. It's the cars that offer other experience that remind me of high end audio.
Also, I don't think the car analogy works at all for high end audio. I think the faster you go the more you're objective. It's the cars that offer other experience that remind me of high end audio.
That got me curious, so I looked up Walmart's prices: my 225/45/17's are about $100 a piece in Europe, and nearly $200 in the US! Here, all the premium brands like Conti/Dunlop/Michelin cost nearly the same, give or take 10%.
You guys buy gas and oil at half price compared to us, but pay double for the tyres. Justice! 🙂
Last few days and not sure how I have been listening to a number of classical recordings done by the same team. Sometimes with a recording it will just sound 'right' and then I go and beaver off to find out more. These ones had more spot mikes than the purist in me might like but the dynamics were all in tact and 'natural'. Ran it through the Foobar DR calculator and got a DR of 16 back, with and RMS level of -23dB. Basically as they intended back in the early days of CD. I am starting to wonder if the dynamics doesn't matter to me more than the imaging. And one of these is the premiere recording so I can still play the 'music first' card 😛.
Over on vinylengine over the weekend someone was bitching about one of the Santana LPs being 'compressed in mastering'. The guy who mastered it put him right.
Who? and where? Not seen any discussion on here on magic oils for TT bearings. I use ATF in my Kenwood (sorry Howie)
It depends on the tire. In most categories, Michelin and Bridgestone are #1 and #2 in price here. Not sure I would consider Dunlop a premium tire, some of them are good, though. Michelin's top offering is the best tire in almost every category at the moment except for competition-only tires.
Yes, tires are designed first using simulation, and then every single parameter of their performance can be measured. There is no need for an "open mind" because the difference in tires can be demonstrated by the data and laptimes. That's why it is a flawed analogy. There is no one claiming that there are unmeasurable or unexplainable differences between tires that matter to the drivers.
Where do Formula One car tyres come from
"This is when we step in to pick the right compound.” The layout of the circuit is crucial in selecting the tyres: “We consider every detail: the wear and tear of a tyre after a single lap, the texture of the asphalt, speed, safety, grip, pressure, the forecasted weather conditions, as well as all the experiential data we’ve accumulated over the last few years.” They already have an idea of this year’s selection of tyres. Then, according to how the cars fare during the season, they’ll make the best relevant adjustments.
It is now a data driven process, so I don't think it is a good comparison at all with boutique audio.
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Unlike audio, snake oil peddlers in auto can't claim that not everything we ride on can be measured.
I've been asking the same question. I found this Building and Using the AVNA1 Audio Vector Network Analyzer but have no time to make it. Looks like Virtins multi-instrument will do it but you have to build your own front end. George has made his own and I may copy that. May even be worth its own thread?
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