Mathieu Krisztian

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The Practice Room

General discussion for music.stackexchange.com

Mathieu Krisztian

Mon 09:42

@Elements In Exactly !!! Thanks a lot. This is Canon in D. Why did they copy each other ?

Discussion between ojs and Mathieu Kr…

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Mathieu Krisztian

May 9, 2023 21:11

thank you @ojs. I think that it is clear : I could play now at 130 each group of 6 notes. But the whole measure : impossible for the moment. I'll continue working each day. I

Mathieu Krisztian

May 9, 2023 20:45

@ojs : just out of curiosity : what is your "level" in piano : are you an international concertist ?

Mathieu Krisztian

May 9, 2023 20:45

ok. I understood that the way to success is to train like a mad each group of 6 notes. Maybe in one month of work, I could success at 127.

Mathieu Krisztian

May 9, 2023 20:45

@ojs : thank you. With your fingering, I could go no more than speed of 100 (instead of 127). I don't understand how you are able to go to 127.

Mathieu Krisztian

May 9, 2023 20:45

@ojs : many thanks. I investigate your kind help.

Mathieu Krisztian

May 9, 2023 20:45

@ojs may I know what fingering you use on right hand to be able to play so fast ? Do you jump each 3 notes or dou you keep legato ?

Mathieu Krisztian

May 9, 2023 20:45

@ojs i tried with the technique proposed by lazy. This does not allow to accelerate. Also the youtube video is just much too slow. Just try the single measure that i gave. Could you do 127 ?

Mathieu Krisztian

May 9, 2023 20:45

@ojs : at 127, the sound is wonderful, but it looks like this is not feasible for an human, even for Lang Lang.

Mathieu Krisztian

May 9, 2023 20:45

@nuggethead : I just added that it is on piano.

Mathieu Krisztian

May 9, 2023 20:45

@user1079505 : this is the thematic apart that he does not play exactly the same, and apart that he plays much too slow as compared to the tempo of 127.

Chez Cosette

Discussion pour french.stackexchange.com. Bienvenue à tous ! Y...

Mathieu Krisztian

Jan 31, 2023 13:21

@jiliagre : ok merci

Mathieu Krisztian

Jan 29, 2023 14:27

@jiliagre : merci beaucoup

Mathieu Krisztian

Jan 28, 2023 18:05

@LPH : énorme merci. Cela m'aide énormément.

Mathieu Krisztian

Jan 28, 2023 11:36

@mastödantirâfa : ok merci, je l'ai posté juste au-dessus.

Mathieu Krisztian

Jan 28, 2023 11:27

ok. Puis-je avoir des commentaires sur les *temps* de ce texte que j'ai écrit : Un narrateur fictif raconte sa vie dans son journal intime :

...J’ai toujours su que je voulais être pompier. Je n’avais pas d’autre ambition que d’être un simple pompier. Comme je manquais de confiance en moi, de façon naturelle, je travaillai beaucoup le sport au lycée. Comme les professeurs nous avaient bien expliqué que le sport était indispensable pour cela, j’ai fait beaucoup de sport. J’obtins des très bons résultats en sport au lycée, ce qui me convainquit que je pouvais y arriver.

Mathieu Krisztian

Jan 28, 2023 08:26

Q: Puis-je avoir des commentaires sur le choix que j'ai fait pour les *temps* dans ce petit texte

Pourrais-je avoir des commentaires sur l'usage que j'ai fait pour le choix des temps dans ce petit texte. J'ai choisi de manière "intuitive", car j'ignore de manière "théorique" si mon usage est le meilleur choix. Un énorme merci pour tout commentaire. https://textup.fr/671767DN

Mathieu Krisztian

Jan 28, 2023 08:26

merci @LPH : j'ai mis un petit paragraphe et créé une question french stack exchange

Mathieu Krisztian

Jan 26, 2023 18:43

@LPH : merci pour la réponse. OK, je vais faire un nouveau sujet avec le texte de < 2 pages, en réduisant un peu encore pour réduire le temps de lecture des gens.

Mathieu Krisztian

Jan 25, 2023 21:44

@LPH : ok, mais tout le monde peut lire le message ? Dans quelle ville êtes vous ? Je suis à Paris. je souhaiterais vous payer 20 euros pour relire un texte de 2 pages et avoir votre opinion sur l'usage des temps que j'ai choisi.

Discussion on answer by Aaron: How is…

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Mathieu Krisztian

Aug 12, 2022 18:50

@piiperi Reinstate Monica : very interesting. Is it really that, or would the reality be than those pop music hide/do not disclose their score because they have the fear that it would reduce their privilege to play their music score ?

Mathieu Krisztian

Aug 12, 2022 18:50

ok thanks. To you "hearing", do you consider than the first one is more rich to hear / more beautiful ?

Discussion between Prahar and Mathieu…

Imported from a comment discussion on physics.stackexchange.co...

Mathieu Krisztian

Mar 20, 2022 14:33

bye

Mathieu Krisztian

Mar 20, 2022 14:33

ok. I'll follow your suggestions. Thank you for your time.

Mathieu Krisztian

Mar 20, 2022 14:32

ok I understand.

Mathieu Krisztian

Mar 20, 2022 14:31

ok, I see : he simplifies and the consequence is that it could not be exactly correct.

Mathieu Krisztian

Mar 20, 2022 14:30

ok, but it is much more difficult...

Mathieu Krisztian

Mar 20, 2022 14:28

ok, I really trust you, but this is a shame that this "director of a theoretical institute" says bullshit. How people like me could learn from sentences of these guys.

Mathieu Krisztian

Mar 20, 2022 14:26

"Virtual particles are indeed real particles"

Mathieu Krisztian

Mar 20, 2022 14:26

Here : scientificamerican.com/article/are-virtual-particles-rea the guy : Gordon Kane, director of the Michigan Center for Theoretical Physics at the University of Michigan at Ann Arbor : he says that Virtual particles are indeed real particles.

Mathieu Krisztian

Mar 20, 2022 14:25

ok. That is a pity : some web pages say some bullshit, so it is difficult to know the truth.

Mathieu Krisztian

Mar 20, 2022 14:24

"Heisenberg's uncertainty principle, which explains the virtual particle phenomenon..."

Mathieu Krisztian

Mar 20, 2022 14:23

would you have comment ?

Mathieu Krisztian

Mar 20, 2022 14:23

Here, the guy says that the virtual particles comes from the Heisenberg : science.jrank.org/pages/7195/Virtual-Particles.html

Mathieu Krisztian

Mar 20, 2022 14:22

ok. thank you for your kind help and time.

Mathieu Krisztian

Mar 20, 2022 14:21

ok, but if they are not real, they does it mean that we do not know what happens between the incoming and outcoming particles ? We just put a virtual particle just to help us, but we do not know what happen ?

Mathieu Krisztian

Mar 20, 2022 14:20

A last point, do you agree that the fact that virtual particle exist is a consequence of the Heisenberg relationship ?

Mathieu Krisztian

Mar 20, 2022 14:19

Maybe you could put your "official" answer, and I would put it as accepted. Your answer may be something as : "most of the time, a virtual particle is an off-shell particle, but it could happen some complex cases where it is not."

Mathieu Krisztian

Mar 20, 2022 14:17

ok. Then you have explained everything. Thanks.

Mathieu Krisztian

Mar 20, 2022 14:16

ok What is factorization channel ?

Mathieu Krisztian

Mar 20, 2022 14:16

why "in most cases" : could it happen not sometimes ?

Mathieu Krisztian

Mar 20, 2022 14:16

ok.

Mathieu Krisztian

Mar 20, 2022 14:15

But so, if you agree with wikipedia sentence, then you agree that virtual particle is necessary off-shell : this was my question.

Mathieu Krisztian

Mar 20, 2022 14:14

I made a mistake with uncertainty relatinship.

Mathieu Krisztian

Mar 20, 2022 14:14

Sorry, I was meaning that for virtual particle, the mass is different to the "nominal mass". I miswrote with the concept of Delta E * Delta t.

Mathieu Krisztian

Mar 20, 2022 14:13

"In quantum field theory, virtual particles are termed off shell"

Mathieu Krisztian

Mar 20, 2022 14:13

wikipedia : en.wikipedia.org/wiki/On_shell_and_off_shell

Mathieu Krisztian

Mar 20, 2022 14:13

ok sorry, web sites were saying that off-shell particle were meaning Delta E * Delta t >=hbar/2 . So this is wrong ?

Mathieu Krisztian

Mar 20, 2022 14:11

So, do you agree that virtual particle are off-shell (Delta E * Delta t >= hbar / 2)

Mathieu Krisztian

Mar 20, 2022 14:11

do you mean that on-shell is only possible for real particle ?