Joel, I have heard excellent LP replay, a number of times - I know what's there ... and that's a recording of musicians making good music, 😀. That's the heart of the matter, and it can be retrieved from LP or digital. The latter has everything going for it, in all the areas we all know; so for me it makes no sense to go vinyl, apart from nostalgia 🙂.
The thing is, I found the "holy grail" 30 years ago with CD - it's not around all the time, far from it, in fact - but having got there once, twice, any number of times - whenever I choose to put enough effort into it - there isn't an inner driving need anymore to make it happen ... the thirst has been quenched ... 😉
The thing is, I found the "holy grail" 30 years ago with CD - it's not around all the time, far from it, in fact - but having got there once, twice, any number of times - whenever I choose to put enough effort into it - there isn't an inner driving need anymore to make it happen ... the thirst has been quenched ... 😉
WOW!
Boy oh boy! The rationalizations just go on and on and on.... . pages and pages of it.
Enjoy!
-RM
Boy oh boy! The rationalizations just go on and on and on.... . pages and pages of it.
Enjoy!
-RM
You started this mess Richard and now the crazies are telling us we can just throw away bits as long as there are more than 16! Please make it stop.
OK. Sorry.
STOP!
Done.
You are welcome.
This forum is supposed to be about analog.
Someone else can start a discussion group in a new forum/thread on the joys of CD forever.
-Richard
STOP!
Done.
You are welcome.
This forum is supposed to be about analog.
Someone else can start a discussion group in a new forum/thread on the joys of CD forever.
-Richard
I used to like LP's "back in the day" , but I never envisioned the ability to create
so much SPL.
I broke out my old JVC CD , and made it skip while testing out my new
DIY sub (with a 200W DIY amp).
I actually had to rip the CD into FLAC and use the PC as source to experience
the "upper limit" 😱.
I could only imagine what an LP would do as source. That's my practical "take"
on (full - not even CD) digital - it's the only source that can actually perform reliably
with a modern (powerful) system.
OS
so much SPL.
I broke out my old JVC CD , and made it skip while testing out my new
DIY sub (with a 200W DIY amp).
I actually had to rip the CD into FLAC and use the PC as source to experience
the "upper limit" 😱.
I could only imagine what an LP would do as source. That's my practical "take"
on (full - not even CD) digital - it's the only source that can actually perform reliably
with a modern (powerful) system.
OS
Yes. I wonder why we insist on bits, as the frequency is much more important.
44.1 is way too low and oblige to use an anti aliasing filter witch have an impact on phases in the audible bandwidth.
For me, 16 bits-96Khz is a lot better.
If i cannot hear 20KHz pure sinus waves, i can feel the difference, in a musical program with an equalization creating a bump at 30KHz. I often used this to add 'air' to female voices.
Oh ! This forum is supposed to be about something ?
Which still use 'analog' as a source ?
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SPL has hard time passing through snowflakes 😀. (actually the reverse).
That problem did happen , old HK680 could not do it , Bigger DIY 20th century
tech class AB can 🙁.
OS
Back in that last century , the 15,750hz CRT "noise"(horiz osc.) was noticeable as a
"presence" in the room - not quite a real tone.
Edit - but we actually had to be hearing it - it's absence was also quite noticeable.
OS
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I remember, as a child, being horribly cramped throughout a concert in a church by this shrill whistle.
Nobody seemed to notice-it. I was explained it was coming from the TV cameras, recording the performance.
I suppose that, me too, I should not hear anything today :-(
But what about the quality of the sound track, recorded at this moment ?
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Had 4 K horns, two 18 subs, two 15 subs, each with a 250 watt tigersaurus driving it (back in '79). When not performing mobile with the ttables, I'd setup in a 2 bay garage, play it as loud as it could possibly go. SPL was shall we say, nice.
As long as the ttables were directly coupled to the concrete, no feedback. My 10 inch reel to reel would feedback though.
Also a good quality check on the garage door hardware, finds all the loose bolts.
jn
I showed some screen shots of real cases there
(and I can provide the .wav files if one wants them).
Where is this "distortion rising as signal level goes down" with the 16/44.1k?
For, another thing: 🙂
Moving to higher bit rates and higher sampling freq digital formats, neccesitates catering for lower noise (and increased immunity to EM due to higher switching freq) analog equipment and PSUs both upstream the ADCs as well as downstream the DACs.
If not, there is the danger of getting worse system performance with a better digital format as Frank and Ed mentioned before.
Thanks for sharing this
If by this " x percent distortion during full scale reproduction due to lsb size" you mean the quantisitation error, this miniscule error being ~ ½ the amplitude of LSB is constant for an undithered signal and in reall cases (for a dithered signal), practically non existent
There is a technical term. S/E meaning (maximum) Signal to (quantiation) Error.
For a 16bit system we have a S/E of 65536 steps to 0.5 of a step, or 65536/0.5=131072
S/E ratio is expressed in dB through the formula 6.02n+1.76 where n is the number of bits
For a 16bit system S/E=98dB
Every added bit yields a 6dB increase in system's S/E because it reduces the quantisation error by two.
You describe a type of converter similar to Yamaha's switched 16 bit converter (used in combination to their YM3434 oversampling digital filter).
https://books.google.gr/books?id=Ed...v=onepage&q=switched 16 bit converter&f=false
(This is a great technical book)
It depends on which step you mean
If you mean digitizing step along the analog signal amplitude, with linear converters any step is as high as the amplitude of 1LSB
If you mean a step on the 16bit word, steps are of no equal resulting value. For example the MSB accounts for a change of a full one half of the analog signal's amplitude, while the LSB will change only (for 16bit word) 1/65536 of the analog signal's amplitude.
That's why the accuracy of the converter's MSB is of great importance (on some older DACs there was a trimmer for calibrating the MSB)
George
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Where's my tongue in cheek emoticon when I needed it?
I remember testing .01% matching resistors on silicon, what a pita. Stress the substrate their epoxied to, it toasts the match due to strain guage effect. In military hybrids, it forced rethinking the sequence of bonding. Bonding to the alumina substrate first, then doing substrate to package bond transferred the substrate to package tce mismatch into the resistors during cooldown. By bonding substrate first, you glued the resistor to a pre-flexed alumina which remained constant during chip attach.
jn
So if I'm listening to a quiet track which doesn't use the top 3 bits, the 13 bit signal will have S/E of 80 dB. Thanks.
Bad explanation on my part I fear. I meant that given the full scale file, do a 3 bit shift to the data prior to burning it to the cd. So, in the studio, truncating the bottom 3 bits of information.
My definition of monotonic is that there is only 1 unique output for every digital input to the DAC.
By definition, that requires the analog output step between 0111 1111 1111 1111 and 1000 0000 0000 0000 be no more than the lsb.
jn
actually you can have an arbitrary MSB error and still be monotonic == single signed slope
you may be thinking of <1/2 lsb differential linearity
and with noise shaped dithered signal you can have linearity and perceive a few kHz tone with amplitude below the lsb
you may be thinking of <1/2 lsb differential linearity
and with noise shaped dithered signal you can have linearity and perceive a few kHz tone with amplitude below the lsb
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