NorthSky
Major Contributor
- Joined
- Feb 28, 2016
- Messages
- 4,998
- Likes
- 946
So, what is the point of this youtube video and why have you posted it- commentary?
Surely ASR is better than posting links to random Youtube videos?
lolIt seems to be a form of forum democracy even if not specific or supported, re thread topic. Becoming more frequent. Thus it is.
Some members just wanted a bit of background on the reasoning being this clip you posted. There’s no need for this kind of reaction bob.If some of you are unhappy, go post in the Fight Club section...it's the place.
If I have to explain myself each time I post something just to please some of you, life would be miserable. So take your misery with you and go bully someone else.
You don't like it, it's your problem, don't blame me, grow up.
The piano keyboard would be impractical if the width of the keys were related to the fundamental frequencies they play in a linear fashion.
Lowest note key width = 1 inch, and a linear width scale used, the highest note key would be 152 inches wide.
And that only covers the range of 27.5 to 4186Hz.
There must be a good reason the piano layout is closer to logarithmic (or is it just exponential?) at least, by octaves.
Intriguingly ill conceived. Just shows how much technically questionable garbage is freely available on the internet, sadly.
It is very, very unlikely that the record player in the video could pick up any higher frequencies accurately, even if they were on the LP. It doesn't look like a particularly sophisticated cartridge, so it probably has a spherical stylus, or maybe at best an elliptical, this exacerbates the distortion at higher frequencies. It is common for even very good cartridges to have high distortion at high frequencies, the very expensive Lyra Etna SL has around 10% distortion at 10kHz - and what he is using ain't near as good as one of those, so it is very, very likely that most of the higher frequency stuff on his graphic is distortion products of the cartridge he is using.
Luckily it is inaudible and not reproduced by most speakers anyway.
You so rarely see distortion numbers for carts, probably they look so bad, like speakers.It is common for even very good cartridges to have high distortion at high frequencies, the very expensive Lyra Etna SL has around 10% distortion at 10kHz
HiFi News does a distortion measurement of all the cartridges it tests. It is the only magazine I know of in English that does. Typically 2% through the mid band and often 8% in the top octave (10kHz-20kHz) though there are substantial variations. The biggest difference between cartridges is frequency response. Very few are flat, some have big peaks in the treble but many of the popular audiophile units are rolled off in the treble, some, like Koetsus start to roll off surprisingly early. Can't find the plot at the moment thoughYou so rarely see distortion numbers for carts, probably they look so bad, like speakers.
If I had ultrasonic hearing I'd be interested in this, http://www.dynavector.com/products/cart/e_17d3.html, I would hope very extended freq response means low distortion in the audible band, no idea if it does.
Yes.One thing to mention- distortion is significantly different for horizontal (mono) modulation and vertical (stereo difference) modulation, the latter being much worse. Does HFN measure those separately?