Sound Quality Vs. Measurements - Page 364 - diyAudio
Go Back   Home > Forums > Member Areas > The Lounge

The Lounge A place to talk about almost anything but politics and religion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 17th March 2012, 05:13 PM   #3631
diyAudio Member
 
Join Date: Jan 2008
Location: Virginia
In my experience DSD sounds very much like the analog. Maybe more than the 24/96 PCM, but even that is extremelly close.
PS: I am old enough and grew up with LP and reel-to-reel, so I am not talking from my imagination. But never listened to a high end LP player (k$ range), owned just decent ones or had access to very good ones (players) transfered to reel-to-reel.

Last edited by SoNic_real_one; 17th March 2012 at 05:28 PM.
  Reply With Quote
Old 17th March 2012, 05:14 PM   #3632
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 98
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
You overestimate my capacity for being surprised. I think I had an all analog Nimbus recording of Bernard Roberts (direct to disk) playing Beethoven's 'Diabelli Variations' - but I didn't bring it with me when I emigrated.
__________________
It doesn't have to take the form of a conspiracy, rather a consensus... James H Kunstler
  Reply With Quote
Old 17th March 2012, 05:54 PM   #3633
a.wayne is offline a.wayne  United States
diyAudio Member
 
a.wayne's Avatar
 
Join Date: May 2008
Location: Front Row Center
Quote:
Originally Posted by bcarso View Post
I took emphatic exception with Sean O. recently on FB when he described a Sarah Vaughan cut on a CD compliation as sounding as if it had been recorded from vinyl, owing to the clicks and pops, and said that perhaps this would make it sound better to aficionados of LPs. I deemed this notion horse$h**. It's in spite of dirty, worn, and poor-to-begin-with-pressings LPs, not because of them, that vinyl sounds good, and characterizing people who continue to prize it as merely nostalgic and antiquarian is rubbish. And I hear that notion a lot, especially from people who have never heard good vinyl playback.

Having said that, I have no idea why vinyl, at its best, sounds as good as it does, and as well have no r
eluctance to listen to symbol-domain media.
G

I'm with you , can't figure why limited bandwidth poor signal to noise ratio nail dragging analog sounds as good as it does , All I can say is that I still have my LP12 and AR table saved for those special moments when I'm not too lazy to reach for my digital remote ....

Hey that's me , reel tape and all ..................
  Reply With Quote
Old 17th March 2012, 05:58 PM   #3634
dvv is offline dvv  Serbia
diyAudio Member
 
Join Date: Sep 2004
Location: Belgrade, Serbia
Quote:
Originally Posted by ThorstenL View Post
Hi,



Massive parallel transistors are like making "discrete" ring emitter transistors.

You can parallel (and cascode) a large number of small signal parts and end up with something that has much lower parasitics, higher Ft and better Beta linearity than a single higher power part, at lower cost.

Though the situation is changing, as most discretes now are aimed at switched mode something, which means high voltages and fast operation are becoming more common.

I usually find that seriously Munz'ing stuff intelligently is well worth it though.

Ciao T
Which is exactly what Dan d'Agostino did and used them for, a very complex arrangment.

For audio, I usually swear by BF 720/721 - a transistor with uncommonly low distortion and actual, effective Ft. But I find that two parallelled MPSA 42/92 devices actually beat him all around, albeit by just a little. Also, their price is so ridiulously low that you can easily afford a large population from which to select them easily. In a handy, TO-92 package.
  Reply With Quote
Old 17th March 2012, 06:07 PM   #3635
dvv is offline dvv  Serbia
diyAudio Member
 
Join Date: Sep 2004
Location: Belgrade, Serbia
Quote:
Originally Posted by SoNic_real_one View Post
Why you need an OpAMP to deliver amperes at output?
OpAmp's have their role and power stages in NOT what they are made for. A "normal" design should never load an OpAmp output more than 1-2 kohm. I/V stage, filters... they don't need buffers like above.
Newer OpAmps have 20-50mA of clean output (to as low as 600ohm). The problem apears when they are used to do drive 32 ohm headphones - so in the end it is BAD usage of an electronic component. It's user error.
I've just spent around two years developing headphone amps. Let me suggest you try a little test.

Use ANY ONE of the wonder op amps nominally capable of delivering 50 mA of current to compare with an OPA 37 with just a single pair of higher current trannies, like the MPSA 56/06, or better yet, BC 639/640.

Put them together and measure away, and audition away, chances are that if you got the circuit right, EACH AND EVERY time the OPA 37 setup will do better than your "high current" op amp.

If you really want to cover all your bases, your worst case load impedance will be the older Beyer Dynamics 48-A headphones, considered by quite a lot of people as the best headphone ever made, with only one fault - it used to have a 5 Ohm impedance. I see they have now changed that to 250 Ohms. But I did mine to be able to drive them without a hitch, reasoning that if they can do that, then the usual fare of 30 Ohms and more will be fun and games to drive.

Sure, I used 50W devices, why not? Is mine more expensive than an op amp based design? It surely is. But it also delivers better sound, I believe in no small part because I overdid so many things.
  Reply With Quote
Old 17th March 2012, 06:19 PM   #3636
dvv is offline dvv  Serbia
diyAudio Member
 
Join Date: Sep 2004
Location: Belgrade, Serbia
Quote:
Originally Posted by ThorstenL View Post
Hi,



While "all analogue" LP's do exist, you would be surprised how many actually went through a 14 Bit/48Khz digital delay (IIRC - it may have been 16 Bit) during cutting to automatic control of groove spacing...

Ciao T
Oh man, you shouldn'ta, hadn'ta, oughtn'ta said that ...

You just proclaimed that the revered LP has not been all analog for a long time.

That was MEAN!
  Reply With Quote
Old 17th March 2012, 06:41 PM   #3637
bcarso is offline bcarso  United States
diyAudio Member
 
Join Date: May 2005
Location: Canoga Park, California
Quote:
Originally Posted by dvv View Post
Oh man, you shouldn'ta, hadn'ta, oughtn'ta said that ...

You just proclaimed that the revered LP has not been all analog for a long time.

That was MEAN!
Sounds like there might be a small (well, o.k., microscopic) market for a really high-quality delay module.
  Reply With Quote
Old 17th March 2012, 07:06 PM   #3638
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Quote:
Originally Posted by bcarso View Post
Sounds like there might be a small (well, o.k., microscopic) market for a really high-quality delay module.
Do you mean some servo motor control to move microphone in anechoic chamber? Digital control of analog delay, very audiophiley!
__________________
"Our youth [...] have bad manners, contempt for authority; they show disrespect for their elders, contradict their parents, [...] and tyrannize their teachers. -- Plato, 447-367 BCE
  Reply With Quote
Old 17th March 2012, 07:08 PM   #3639
dvv is offline dvv  Serbia
diyAudio Member
 
Join Date: Sep 2004
Location: Belgrade, Serbia
Quote:
Originally Posted by bcarso View Post
Sounds like there might be a small (well, o.k., microscopic) market for a really high-quality delay module.
There very possibly is, Brad. Perhaps you should investigate, if you're interested.
  Reply With Quote
Old 17th March 2012, 07:10 PM   #3640
dvv is offline dvv  Serbia
diyAudio Member
 
Join Date: Sep 2004
Location: Belgrade, Serbia
Quote:
Originally Posted by Wavebourn View Post
Do you mean some servo motor control to move microphone in anechoic chamber? Digital control of analog delay, very audiophiley!
Add some long legged, more undressed than dressed chicks, and you've got a deal!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Quality Control differences = variations in sound quality? KT Class D 3 4th June 2014 12:02 AM
Sound Card for Measurements Marik Solid State 2 2nd January 2012 08:59 PM
Sound Card Recommendations (For Audio Measurements) dchisholm Equipment & Tools 5 16th July 2011 09:40 AM
How to protect sound card during amp measurements? okapi Everything Else 13 2nd September 2008 03:06 PM
Sound cards - test and measurements jackinnj Everything Else 2 5th July 2003 03:02 PM


New To Site? Need Help?

All times are GMT. The time now is 12:09 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2