DSP hardware is cheap, the software isn't very hard, at audio bandwidths.
But... We could have a long technical discussion on this, but I think we'd still agree to differ...
The distortion issue on reeds would never have been noticed, even Ed can't measure the third harmonic of 20fA.
Is that a challenge? Should we set down the ground rules? This would be 20fA current passing through a reed relay into a load of my choice? Should we use say a Meder reed relay that I have some or the units?
As fluent as Gerhard is in English, it is his second language, the actual meaning of this phrase is often missed.
It does not refer to a shovel or the type of playing card. It is a derogatory term for a person of African ancestry!
More interestingly a word that is still acceptable is "bulldozer!" This was the term used for the fellow in charge of the other slaves!
Finally a word the moderators let past is "Smuck." Commonly used but extremely derogatory in Yiddish which is mostly German written with the Hebrew alphabet.
So I suspect Gerhard does not party on April 20th and this was a rare occasion where he was misusing English.
I hate to say it repeatedly, but many audio designers have actually studied the effects of relays on sound quality, for 40 years or more. Unfortunately, everything that we found from others who actually make the relays and our own findings keeps continually forgotten by people who should know better. When I look back 40 years, as I often do, I must say that we took audio design much more diligently then, and many of us older guys actually published articles or even gave papers on subtle factors that we found at that time. Richard Marsh and I did several articles at the time. Walt Jung and Richard Heyser did even more. I find that the trite comments here about audio problems like relay selection shows an actual ignorance of the problems themselves. You will never make a notable audio design without knowing what to avoid, as much as what to do.
For the record, I used to love classical music on the K-horns. The horns could play loud enough effortlessly to approximate live sound levels. However, the K-horns sounded really 'wrong' when playing back someone that I knew personally, completely changing the timbre of their voice. It drove me nuts, so I reluctantly sold them off. These days, living in an apartment with neighbors, I never can turn my Sasha's up to realistic listening levels very often, so I normally evaluate with human voice, rather than symphonic orchestras. I miss the orchestras sometimes, especially ballet music.
For the record, I used to love classical music on the K-horns. The horns could play loud enough effortlessly to approximate live sound levels. However, the K-horns sounded really 'wrong' when playing back someone that I knew personally, completely changing the timbre of their voice. It drove me nuts, so I reluctantly sold them off. These days, living in an apartment with neighbors, I never can turn my Sasha's up to realistic listening levels very often, so I normally evaluate with human voice, rather than symphonic orchestras. I miss the orchestras sometimes, especially ballet music.
Without getting into a long discussion, Yes, DSD can be converted to PCM, then upsampled, filtered, etc., then converted back to DSD. The problem is that doing it well without obvious damage to sound quality is computationally expensive. A top of the line i7 or i9 and a fast NVIDIA video card (also used for procssing) might just be able to handle two channels of PCM real time conversion to DSD1024, if the highest sound quality algorithms are used. That's the situation today using HQplayer on Windows 10 64-bit. If we want to use bi-amping or tri-amping along with DSP to improve sound quality, we need to make sure that we do more good than damage, IMHO.
EDIT: Once people hear AK4499 playing DSD512 through a good, clean power amp, they probably will want to have it and not give up any of the sound quality (my opinion only, of course). Not saying it totally perfect, but it is very, very good. Converting 4 or 8 channels to high quality DSD on one computer might require a powerful server class machine with multiple CPU chips.
All the foregoing IMHO only, of course.
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Think? Three mouse clicks would get you to the modern derogatory meaning, not the original comparing shovels.
So apparently you are the FUD master.
4th. language, please, after German, Latin, French.
It seems my use is more in line to the dictionary of the Leopold Univ Munich, wordreference.com and the Oxford dictionary than your's.
Not even the Urban Dictionary with its specialization in dirty language shows the
slightest hint to a derogatory meaning.
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No Sir, I salute you as the master. I've heard it's very easy to find supporting evidence for all sorts of claims on the interweb. It's most likely a language issue, ie the American term "spade" being confused with the English digging tool
You would not have any reason to know this, IMO this particular phrase is not the best example either. The term "spade work" was common in the military during WWII.
No the magnetic field only distortion in the reed relays we used into a 10**12 Ohm load.
IIRC they were COTO and the resistors were Victoreen glass encapsulated.
Dick, if you parallel a current source with another impedance together they no longer act like a current source i.e. you no longer have current drive of the speaker.
“There is seemingly no limit in surprises in this thread.”
The opposite is perfectly true as well ‘there are no surprises in this thread’
“More interestingly a word that is still acceptable is "bulldozer!" This was the term used for the fellow in charge of the other slaves!”
Bulldozers have not been around that long Ed. You need to brush up on your etymology.
They were invented in 1923.
The opposite is perfectly true as well ‘there are no surprises in this thread’
“More interestingly a word that is still acceptable is "bulldozer!" This was the term used for the fellow in charge of the other slaves!”
Bulldozers have not been around that long Ed. You need to brush up on your etymology.
They were invented in 1923.
Current source has to have infinite output impedance. This is dual to voltage source, which should have zero output impedance. Paralleling current source with a resistor makes its output impedance as that of the resistor. This is Thevenin. Every workshop electrician must know Ohm, Kirchhoff and Thevenin laws and theorems. Current source with parallel resistor is equivalent to voltage source with the same resistor in series.
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Ok maybe crossed wires. I’m too chilled right now to worry about it.
Peace
yep. so what? Another straw man set up?
How does that relate to back-emf? Dont get hung up on your terms. Its the back-emf that I am dealing with to reduce THD.
Current sampling, current feedback or what ever but a current source? Quasi- maybe.
THx-RNMarsh
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A very notable year, Estwing hammers (one piece) were founded that year I still use my grandfather's original and the leather wrapped grip is still fine after 96 yr.They were invented in 1923.
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