Why would you think MP3 has high THD? Its a linear-transform. Perceptual coding is not about distorting signals, its about removing inaudible parts of them. Totally different than nonlinear distortions. One could envision that brain is more likely to notice something that shouldn't be there, compared to noticing something subtle that was before but isn't there anymore.AKSA said:
Its easy to test, just save rightmark test signal, run through codec, and analyze in rightmark.
e.g. http://beale.best.vwh.net/measure/audio/#codecs
128K mp3 THD plot:
An externally hosted image should be here but it was not working when we last tested it.
"Reminds me of the joke about the drunk looking for his lost keys under the lamp post... he is never going to find them because that isn't where he lost them, but it is where the light is."
You stole my line!
I have about 40 amplifiers in my living room right now. The one that measures the best is unlistenable, it sounds like broken glass.
I can borrow any test equipment I need. A couple of years ago I ran some test stations that the equipment and software was valued at in excess of $3.5M per console (all govermnent property).
As in the joke above, what we measure seems to bear little or no relationship to what we hear.
It would be nice to find some test that would do the job, then I wouldn't have to waste all that time listening to music.
You stole my line!
I have about 40 amplifiers in my living room right now. The one that measures the best is unlistenable, it sounds like broken glass.
I can borrow any test equipment I need. A couple of years ago I ran some test stations that the equipment and software was valued at in excess of $3.5M per console (all govermnent property).
As in the joke above, what we measure seems to bear little or no relationship to what we hear.
It would be nice to find some test that would do the job, then I wouldn't have to waste all that time listening to music.
djk said:
The story goes that Vladimir Lamm, designer of the Lamm stuff, does not listen to his stuff. He spent many years in a Russian research facility that studied -- amounst other things -- human hearing perception. He looks at the shapes of the curves he generates from the data he gathers & he can predict whether his stuff will sound right.
I've never seen the stuff, but i have also not seen anyone say any but good things about his kit, so if true, then he has a handle on what to measure (and even more important, how to interpret the data) to evaluate sonics.
dave
Hi Aksa,
thanks for the enlightenment. And confirmation of one of my pet hypotheses (fast transistors).
"The feedback stage uses two AC paths; one through the shunt cap from the voltage divide function, and another direct from the output. This seems to minimize phase shift in this network, and permits use of a smaller electrolytic."
Can you explain where your two AC paths are located? and why it allows a smaller cap?
thanks for the enlightenment. And confirmation of one of my pet hypotheses (fast transistors).
"The feedback stage uses two AC paths; one through the shunt cap from the voltage divide function, and another direct from the output. This seems to minimize phase shift in this network, and permits use of a smaller electrolytic."
Can you explain where your two AC paths are located? and why it allows a smaller cap?
Hi Andrew,
I thought this might happen....... no, I'm sorry, this is important IP and I won't share it in a public forum. Email me privately.
Cheers,
Hugh
I thought this might happen....... no, I'm sorry, this is important IP and I won't share it in a public forum. Email me privately.
Cheers,
Hugh
I have sure, as i visited all forum threads, that Hugh already told ALL his secrets..
But as Hitler said..... the biggest the lye, more the people believe
Try to say deep true....nobody believes!
He explained the theorie, he show the best transistor, he explained about the caps, he discussed Miller and alternative methods, discussed VAS, explained the correct current he found to bias the Differential, the Phase problems and arrangements made, the need of special parts, the tunning methods.
But i think people gave not attention to the details.... details together can create whole frame.
Lets imagine that hugh said that the 100N poliester is a need...people do not give a cheap for those things...something not important (this is an example, for instance!).,.. and as habit, people literated in electronics, EE or hiper advance theoric guys go discussing that the Phase Shift of the Second harmonic is more deep than the IMD that appear in the first cicle when starting, and this phase shift, shift all to hell...and no one heard...but i could read.... all tricks and many time...hehe...all them!.... people may decided not to listen because he is not EE...do you know what EE can do with the degreé certificate?....
You take your certificate, that is decorating the wall, beeing home to spiders and make it round and protude.... very tight..... not more than 1 inche and a half...made it strong to penetrate.....and them...put inside a hard card papper enclosure that is normally used to protect those things....and go to listen to the ones have practice.
Well dear friends.....hehe...not snobbing you....not too much...but Big Fat Charlie will make a virtual travell into Hugh home...yeah...we will go very near to have a Cappucinno Coffee...hehe...sorry guys!
Hugh!...do not sleep for a while, i am just adjusting instruments to departure.
regards,
Carlos
But as Hitler said..... the biggest the lye, more the people believe
Try to say deep true....nobody believes!
He explained the theorie, he show the best transistor, he explained about the caps, he discussed Miller and alternative methods, discussed VAS, explained the correct current he found to bias the Differential, the Phase problems and arrangements made, the need of special parts, the tunning methods.
But i think people gave not attention to the details.... details together can create whole frame.
Lets imagine that hugh said that the 100N poliester is a need...people do not give a cheap for those things...something not important (this is an example, for instance!).,.. and as habit, people literated in electronics, EE or hiper advance theoric guys go discussing that the Phase Shift of the Second harmonic is more deep than the IMD that appear in the first cicle when starting, and this phase shift, shift all to hell...and no one heard...but i could read.... all tricks and many time...hehe...all them!.... people may decided not to listen because he is not EE...do you know what EE can do with the degreé certificate?....
You take your certificate, that is decorating the wall, beeing home to spiders and make it round and protude.... very tight..... not more than 1 inche and a half...made it strong to penetrate.....and them...put inside a hard card papper enclosure that is normally used to protect those things....and go to listen to the ones have practice.
Well dear friends.....hehe...not snobbing you....not too much...but Big Fat Charlie will make a virtual travell into Hugh home...yeah...we will go very near to have a Cappucinno Coffee...hehe...sorry guys!
Hugh!...do not sleep for a while, i am just adjusting instruments to departure.
regards,
Carlos
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In front of the White Construction...inside the park.
That's the landing point..... have to adjust anti-material shield...problem is that Halojoy (he is from Orion too) is always playing Chess against the computer.
Going!...well.... already arrived!
here i am...let's have a Coffee!
No, Halojoy insist to win the computer...doing that last 23 years!
Carlos
That's the landing point..... have to adjust anti-material shield...problem is that Halojoy (he is from Orion too) is always playing Chess against the computer.
Going!...well.... already arrived!
here i am...let's have a Coffee!
No, Halojoy insist to win the computer...doing that last 23 years!
Carlos
Attachments
Re: I have sure, as i visited all forum threads, that Hugh already told ALL his secrets..
You might be a funny guy Carlos, but some of your theories are not only unacceptable, but dangerous.
destroyer X said:
You might be a funny guy Carlos, but some of your theories are not only unacceptable, but dangerous.
DESTROYER X
"the biggest the lye, more the people believe"
Who repetitively said :
"This amplifer sounds excellent ; this other one (wich has a lot of feedback, of course !) sounds horrible ; feedback is insane, immoral ; current mirrors and constant current sources are the worst ennemies of good reproduction, etc..." ?
How can we be sure that they are not only huge lies, profered by people who have a clear preference for distorsion in amps ?
~~~~~~~~ Forr
§§§
"the biggest the lye, more the people believe"
Who repetitively said :
"This amplifer sounds excellent ; this other one (wich has a lot of feedback, of course !) sounds horrible ; feedback is insane, immoral ; current mirrors and constant current sources are the worst ennemies of good reproduction, etc..." ?
How can we be sure that they are not only huge lies, profered by people who have a clear preference for distorsion in amps ?
~~~~~~~~ Forr
§§§
N'est pas la repeticion qui faire la differènce Monsieur.
It is not repetition that can make some difference.
It is not the quantity...the repetition number..but the lye size man!...there are guys that already believe that i am from Orion.
And i may be kidding...who knows?
If you have some doubt...do it by yourself..... believe in the ones you think that have good intentions...the others...forget them.
I am doing my best Monsieur...will keep doing this way...the ones that want to stay with me, to read the foolishes i use to write...can came here and read...others, can jump over!...no problem.
Those things about Beliefs...are alike Religion.... something are very insane...in your place..... really...i suggest you to do as i use to do...i go and i construct, and i do my own evaluation, i call guys to help me to evaluate, and i use to publish because my friends are more than 30!...and this is more than enougth...my threads and kiddings are for them....and could understand when i am kidding or talking deep serious things.. this depends of effort to know the forum guys..others, prefere to be lonely.
You can be my friend too... and join the group...the sub group of real conversations, research and constructions in group..one more will be good, but first, have to open your heart and mind to trust a little in someone...go to construct and evaluate, do not believe first time.... testing my words with real construction and analisis, you will know, with sure, that you are a bad constructor or a am a good lyer...Ahaahhaah!...will start, probably, to believe my words...will be one more friend.
There is no definitive true forr..... a big Doctor already was deceptive to me when i construct his amplifier...those things depends of so many things...the speaker, the audio source, you musical taste adequated to the theory or schematic...the acoustic in your home...your own mood...well...in that matter, there are enormous differences....and there are some similarities too...have to decide to take the risk or not.
regards,...au revoir, à bientôt Monsieur
Carlos
It is not repetition that can make some difference.
It is not the quantity...the repetition number..but the lye size man!...there are guys that already believe that i am from Orion.
And i may be kidding...who knows?
If you have some doubt...do it by yourself..... believe in the ones you think that have good intentions...the others...forget them.
I am doing my best Monsieur...will keep doing this way...the ones that want to stay with me, to read the foolishes i use to write...can came here and read...others, can jump over!...no problem.
Those things about Beliefs...are alike Religion.... something are very insane...in your place..... really...i suggest you to do as i use to do...i go and i construct, and i do my own evaluation, i call guys to help me to evaluate, and i use to publish because my friends are more than 30!...and this is more than enougth...my threads and kiddings are for them....and could understand when i am kidding or talking deep serious things.. this depends of effort to know the forum guys..others, prefere to be lonely.
You can be my friend too... and join the group...the sub group of real conversations, research and constructions in group..one more will be good, but first, have to open your heart and mind to trust a little in someone...go to construct and evaluate, do not believe first time.... testing my words with real construction and analisis, you will know, with sure, that you are a bad constructor or a am a good lyer...Ahaahhaah!...will start, probably, to believe my words...will be one more friend.
There is no definitive true forr..... a big Doctor already was deceptive to me when i construct his amplifier...those things depends of so many things...the speaker, the audio source, you musical taste adequated to the theory or schematic...the acoustic in your home...your own mood...well...in that matter, there are enormous differences....and there are some similarities too...have to decide to take the risk or not.
regards,...au revoir, à bientôt Monsieur
Carlos
DRESTOYER X
"there are guys that already believe that i am from Orion."
Judges in some terrific countries would ask you :
"Proove you are not."
~~~~~~ Forr
§§§
"there are guys that already believe that i am from Orion."
Judges in some terrific countries would ask you :
"Proove you are not."
~~~~~~ Forr
§§§
Rigth forr, another evidence that i can scape with my space ship.
Just kidding to keep the good mood and elevated feelings monsieur.
Life already a big problem....... they appear fast, when we find solution to one, two appear to disturb us....not only our own problems.... our son's problems.... the frustration we have watching television and observing the big problems we have in this world..
I use to go kidding and keeping the spirit the highest possible.
Bon Soir pour vous Monsieur.
regards,
Carlos
Just kidding to keep the good mood and elevated feelings monsieur.
Life already a big problem....... they appear fast, when we find solution to one, two appear to disturb us....not only our own problems.... our son's problems.... the frustration we have watching television and observing the big problems we have in this world..
I use to go kidding and keeping the spirit the highest possible.
Bon Soir pour vous Monsieur.
regards,
Carlos
PMA...message received....you may be rigth....Time Warp?... do not know Halojoy...oh
sorry!...Elso!
Is it the musical instruments full of chords.....many steel wires.... that use to produce the music we think that came from heaven...Warp?
regards,
Carlos
sorry!...Elso!
Is it the musical instruments full of chords.....many steel wires.... that use to produce the music we think that came from heaven...Warp?
regards,
Carlos
Re: PMA...message received....you may be rigth....Time Warp?... do not know Halojoy..
Some music seems to come from heaven indeed like that duet Antonis Remos sings with a girl. It' s a song by Kostas Hatzis (or Xatzis).
Anyone from Greece knows it? Whenever I hear it I get goose-flesh all over.........
http://www.antonisremos.com/
Hi Carlos,destroyer X said:
Some music seems to come from heaven indeed like that duet Antonis Remos sings with a girl. It' s a song by Kostas Hatzis (or Xatzis).
Anyone from Greece knows it? Whenever I hear it I get goose-flesh all over.........
http://www.antonisremos.com/
The site music you sent me Elso, is wonderfull...i am listening continuously
Thank you Elso...you know...music is a very special way of communication.... the music you choice to present you....are yourself express with chords... and i cannot understand...but i can feel you...and i like what i feel.
Thank you...My Wife is half Rodriguez from Spain, and half Menelau from Greece.
Can you please upload this music to me Elso?
nanabrother@yahoo.com
I will dance with my wife...the way the Greek do... extended arms!... and will be second music, first she will use her round red dress and will hit the floor (wooden especially made) with Flamenco dance.
And you Eva...have some flamengo dance to send me.... we will love that.... family from Orence Barbadannes, near Santiago de Compostela just return to Spain last week... they passed 1 month with us...lovely people...lovely!
regards,
Carlos
Thank you Elso...you know...music is a very special way of communication.... the music you choice to present you....are yourself express with chords... and i cannot understand...but i can feel you...and i like what i feel.
Thank you...My Wife is half Rodriguez from Spain, and half Menelau from Greece.
Can you please upload this music to me Elso?
nanabrother@yahoo.com
I will dance with my wife...the way the Greek do... extended arms!... and will be second music, first she will use her round red dress and will hit the floor (wooden especially made) with Flamenco dance.
And you Eva...have some flamengo dance to send me.... we will love that.... family from Orence Barbadannes, near Santiago de Compostela just return to Spain last week... they passed 1 month with us...lovely people...lovely!
regards,
Carlos
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