John Curl's Blowtorch preamplifier part II

[ThorstenL]

Ed,

Originally Posted by simon7000

Oh is that why you are always so defensive?

In my county (which is thankfully history since '89) we had a saying which travels and translates extremely poorly, but it renders in English approximatley like this:

"Those who think they know it all really **** off those that do."

Ciao T

[simon7000]

SY

Somehow we ain't talkin! When you slide your head one inch to the left, both ears move. If the delay time from the left speaker is 10.00 ms to the left ear and the signal from the right speaker is also 10.00 ms, when you move a bit that may change to L 9.99 and R 10.01 but at the same time the right ear goes from L 10.00 R 10.00 to L 9.9901 to R 10.0099 or some such. It is the differential we are considering.

ES

[simon7000]

Originally Posted by ThorstenL

Ed,



In my county (which is thankfully history since '89) we had a saying which travels and translates extremely poorly, but it renders in English approximatley like this:

"Those who think they know it all really **** off those that do."

Ciao T

Oh, that explains why you get sin binned!

[ThorstenL]

Scott,

Originally Posted by scott wurcer

OK, so here’s my little dither experiment.

How many samples compromise the window?

BTW, the "horrible" result is true.

The other one is an illusion fostered by getting the right answer to a wrong question.

Ciao T

[Joshua_G]

Originally Posted by ThorstenL

Scott,



AD1862 & PDM100, NOT AD1855 (I heard that part, I'd take cirrus logic instead any day, which is about the same as saying I'd rather eat at MickeyD). It is not the manufacturer, it is the specific chip.

My personal list for 16/44 goes (either Non-Os or PDM100 for HDCD):

#1 TDA1541AS2
#2 TDA1541AS1
#3 TDA1541A
#4 AD1862
#5 PCM56
#6 PCM63
#7 and on - the rest of multibitdom

Listening to TDA1541AS2 with JAN GE 6072A ***** as analogue stage ATM...

Ciao T

Hi Thorens,
Does it make any difference whether there is only 1 DAC chip, or 2 or 4 in parallel?

[scott wurcer]

Originally Posted by ThorstenL

Scott,



How many samples compromise the window?

BTW, the "horrible" result is true.

The other one is an illusion fostered by getting the right answer to a wrong question.

Ciao T

Please clarify? Compromise what window? The time domain waveforms are created by adding analog signals only, yes the DAC and quantizer are assumed ideal. With some work I could program SoX to do this and put some dithered then truncated music on a CD and play it back. The impulse response is an impulse with only additive noise, so propose some other "transient". I am talking looking at it on a sample by sample basis, the dither is additive noise. Forget the averaged spectrum for now, could refer you to Rice, S. O., Mathematical Analysis of Random Noise. Bell System Technical Journal 24 (1945) 46–156 for the distribution of expected values for band limited noise sampled over a given time period.

Your last comment is deliberately obfuscating, reminds me of dropped classes with teachers that didn't want to teach. The DAC photo was just a joke I didn't even look at the part number.

[jacco vermeulen]

Originally Posted by ThorstenL

a saying

Was schon jeder weiss macht mich nicht heiss (, aber ehr-geiz ist geil)

[ThorstenL]

Ed,

Originally Posted by simon7000

Oh, that explains why you get sin binned!

I get sin-binned for breaking rules or not giving (false) respect.

(I do have copies of the notices).

In my view those rules are unjust (especially given what some may be prone to interpret as selective enforcement of said rules), however they are the rules, just or not and if I break them I need to be prepared to face the music.

If you cannot do the time (or stand "enhanced interrogation"), don't stand up against those who make rules...

I do have a lot of T-Shirts in my closet.

Ciao T

[ThorstenL]

Hi,

Originally Posted by Joshua_G

Does it make any difference whether there is only 1 DAC chip, or 2 or 4 in parallel?

Yes, it does.

Ciao T

[simon7000]

T,

You are welcome.

Somehow when I joke with some folks they get insulted and when I insult some folks they thank me! Of course there are those who don't seem to know when they have been insulted.

But the primary rule of courtesy is never duel with an unarmed man. I think that is really the rule you violate to get sin binned. You continue to duel in a battle of withs with the unarmed.