john curl said:
John, I couldn't agree more.
To have the full picture, only one small detail is missing: could you please define "successful amplifier"?
janneman said:
There's no contradiction and yes I do believe that you are the only one that twist it that way.
I don't know if you just teases becasue you like to argue but I'll help you out..
I wrote;
Now is it my english or yours that doesn't make it?
Even if my sentence is sligthly odd you should understand the meaning by the content in the rest of the post.
I do not appreciate a product that has a high price tag (just because it has a high price tag) and does not deliver but I DO accept a high price tag if the product deliver. Common sense don't you think?
/Peter
I vote for a test blind that rewards right answers and punishes wrong ones. Maybe money could be involved.
That's the way we train and test animals - and even school kids. Feedback.
With some real time feedback in the test, it might be easier for the listeners to detect what they're hearing, even if it's only a subconscious preference.
That's the way we train and test animals - and even school kids. Feedback.
With some real time feedback in the test, it might be easier for the listeners to detect what they're hearing, even if it's only a subconscious preference.
library IEEE;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all ;
use ieee.std_logic_arith.all ;
entity PWM_44k1_DAC is port (
CLK_2_9_GHZ : in std_logic;
DATA : in std_logic_vector(15 downto 0);
NPWR_RST : in std_logic;
WORDCLOCK : out std_logic;
PWM_OUT : out std_logic;
);
end PWM_44k1_DAC;
architecture SYNTH of PWM_44k1_DAC is
signal MY_COUNTER : unsigned(15 downto 0);
signal MY_REF_REG : unsigned(15 downto 0);
begin
DOYOURTHING : process(CLK,NPWR_RST)
begin
if NPWR_RST = '0' then
MY_COUNTER <= ("0000000000000000");
MY_REF_REG <= ("0000000000000000");
WORDCLOCK <= '0';
PWM_OUT <= '0';
elsif CLK'event and CLK = '1' then
MY_COUNTER <= MY_COUNTER+1;
if MY_COUNTER = MY_REF_REG then
PWM_OUT <= '0';
end if;
if(MY_COUNTER) = unsigned'("0000000000000000") then
PWM_OUT <= '1';
WORDCLOCK <= '1';
MY_REF_REG <= DATA;
else
WORDCLOCK <= '0';
end if;
end if;
end process DOYOURTHING;
end SYNTH;
Something like that....
w
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all ;
use ieee.std_logic_arith.all ;
entity PWM_44k1_DAC is port (
CLK_2_9_GHZ : in std_logic;
DATA : in std_logic_vector(15 downto 0);
NPWR_RST : in std_logic;
WORDCLOCK : out std_logic;
PWM_OUT : out std_logic;
);
end PWM_44k1_DAC;
architecture SYNTH of PWM_44k1_DAC is
signal MY_COUNTER : unsigned(15 downto 0);
signal MY_REF_REG : unsigned(15 downto 0);
begin
DOYOURTHING : process(CLK,NPWR_RST)
begin
if NPWR_RST = '0' then
MY_COUNTER <= ("0000000000000000");
MY_REF_REG <= ("0000000000000000");
WORDCLOCK <= '0';
PWM_OUT <= '0';
elsif CLK'event and CLK = '1' then
MY_COUNTER <= MY_COUNTER+1;
if MY_COUNTER = MY_REF_REG then
PWM_OUT <= '0';
end if;
if(MY_COUNTER) = unsigned'("0000000000000000") then
PWM_OUT <= '1';
WORDCLOCK <= '1';
MY_REF_REG <= DATA;
else
WORDCLOCK <= '0';
end if;
end if;
end process DOYOURTHING;
end SYNTH;
Something like that....
w
WHAT? You don't write VHDL? I could put in VERILOG or AHDL...
Opinions are like azsholes, everybody got one...
Opinions are like azsholes, everybody got one...
wakibaki said:
If you're going to quote R Crumb it's more like "azzole"
The wine and food anologies fall apart in the end. An amplifier is a utilitarian device the pleasure come from listening to the music.
Scott, this is not a 'spelling' contest, we have too many people who speak English only as a second language. 
😉
😉
The wine analogy really isn't that valid. You don't see people peddling $1000 cork screws that make the wine taste better now do you?
You don't need such a high clock rate to make a DAC with an FPGA. Just use two parallel 15 bit PWMs at half the frequency. As long as the sum of the two 15 bit DACs is the 16 bit code word, then the sum of the two DACs will have that 16 bit values. With 400+ pins on a chip.....
Or... you could remove the constraint that you have to toggle the output at a specified frequency and just use a standard sigma delta design.
You don't need such a high clock rate to make a DAC with an FPGA. Just use two parallel 15 bit PWMs at half the frequency. As long as the sum of the two 15 bit DACs is the 16 bit code word, then the sum of the two DACs will have that 16 bit values. With 400+ pins on a chip.....
Or... you could remove the constraint that you have to toggle the output at a specified frequency and just use a standard sigma delta design.
Hi,
A radar is a radar but not all radars are the same... the same goes for amps. No two different branded amps are the same by design but they will sound different.
A Cheng-Cheng No.54 is not a Nagra.
A Yugo (remember those, or were you trying to forget) is not a BMW, so on and so forth.
Is it not that Psychacoustics is the perception of sounds whilst hearing is, well, hearing.
Thanks
Gareth
A radar is a radar but not all radars are the same... the same goes for amps. No two different branded amps are the same by design but they will sound different.
A Cheng-Cheng No.54 is not a Nagra.
A Yugo (remember those, or were you trying to forget) is not a BMW, so on and so forth.
Is it not that Psychacoustics is the perception of sounds whilst hearing is, well, hearing.
Thanks
Gareth
Claims of super hearing from the geriatric crowd are going to come on deaf ears.
John, you're a company man touting the company line, and we all know it. You wouldn't have your job for very long if you publicly stated any position than the one you are stating here. I wouldn't have my job for very long either if I said that complaints of hydrocarbon odors from the oil refinery we just closed down have anything to do with our company.
You aren't paid to design great sounding amps, you're paid to design a $10,000 amp, or a $50,000 amp, or a $3,000 amp. It's called a price point, and all brands decide on what their price point is going to be. Then they design products that will sell at that price point.
John, you're a company man touting the company line, and we all know it. You wouldn't have your job for very long if you publicly stated any position than the one you are stating here. I wouldn't have my job for very long either if I said that complaints of hydrocarbon odors from the oil refinery we just closed down have anything to do with our company.
You aren't paid to design great sounding amps, you're paid to design a $10,000 amp, or a $50,000 amp, or a $3,000 amp. It's called a price point, and all brands decide on what their price point is going to be. Then they design products that will sell at that price point.
As someone who knows John rather well, I can assure you that whether you agree or disagree with him, he is absolutely sincere. This is NOT a money pose.
fizzard said:
Hi,
So what you are saying is that all 100watt (or whatever) sound the same.
Thus all 6 litre engines are the same.
All 100,000 ton ships are the same.
All women have two eyes a nose etc etc and thus are the same......
So then a Naim 30 watt is the same as a valve 30 watt.
A physicist is a scientist and so is a biologist.
Blah, blah, blah blahblah.
I'm sorry but I have to disagree. There are so many variables involved. One 1ohm resistor is not the same as the next (even though they are very close). One 220uF cap is not the same as the next etc etc.
Thanks
Gareth
Hate to break up the little love fest going on here, but I want to ask a question. 
When we DO hear differences between amps - why do we?
Is it just because they are outside some minimum threshold of FR, THD and S/N? Is it level matching?
Maybe clipping behaviour?
Seems like a silly question, I know. But a few hundred posts back pretty much everyone agreed that not ALL amps sound the same - just amps that measure the same. But given reasonably well made amps the don't sound alike - why not?
When I change out amps in my system and hear a difference (I don't always) what is it that I'm hearing? Distortion differences? Noise floor? Frequency response?
Or is it all just my imagination?
Serious question, not meant sarcastically or rhetorically.
When we DO hear differences between amps - why do we?
Is it just because they are outside some minimum threshold of FR, THD and S/N? Is it level matching?
Maybe clipping behaviour?
Seems like a silly question, I know. But a few hundred posts back pretty much everyone agreed that not ALL amps sound the same - just amps that measure the same. But given reasonably well made amps the don't sound alike - why not?
When I change out amps in my system and hear a difference (I don't always) what is it that I'm hearing? Distortion differences? Noise floor? Frequency response?
Or is it all just my imagination?
Serious question, not meant sarcastically or rhetorically.
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