User talk:PedroAlvesDuarte

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Hello, PedroAlvesDuarte, and welcome to Wikipedia!&#32;Thank you for your contributions.

I noticed that one of the first articles you edited was Guitolão, which appears to be dealing with a topic with which you may have a conflict of interest. In other words, you may find it difficult to write about that topic in a neutral and objective way, because you are, work for, or represent, the subject of that article.&#32;Your recent contributions may have already been undone for this very reason.

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I hope you enjoy editing here and being a Wikipedian! Please sign your messages on talk pages using four tildes ( ~ ); this will automatically insert your username and the date. If you need help, check out Questions, ask me on my talk page, or ask your question on this page and then place  before the question. Again, welcome! shoy (reactions) 17:36, 22 April 2019 (UTC)

Hello Shoy, some help pls.
Hello Shoy,

You spotted a possible conflict of interest on my revision to the article "Guitolao". I must do a disclaimer. Besides being a PhD researcher in Music, I am also a musician and composer, and the person who has invented the Electric Guitolão. This invention has a patent registered to me, and it has been covered by news media, including the national channel RTP1. It must be noted, all the information used for Wikipedia was taken from national news media. I did not use any commercial links nor commercial information (no products for sale on the links). I did the effort of not being biased or anecdotal. I also have to say, although I am a columnist for a newspaper, "O Público" newspaper, all information and references to articles, are from other sources. Nevertheless, I would like to ask your kind help to proofread the article and check if I was able to be objective. Sometimes I come across information that is incorrect or incomplete in Wikipedia, and although I do not available time to become a skilfull "Wikipedian", (learning wiki rules, tech and wiki ways to go about which will be a tremendous deterrent to my participation, because I am just a normal music academic), perhaps I can sometimes correct inaccurate information. For instances, the tunning for the acoustic guitolão, as per the article text, is incorrect. Maybe you can help me revise the information that needs to be added/corrected.

Kind Regards,PedroAlvesDuarte (talk) 22:30, 22 April 2019 (UTC)
 * Thanks for the note. Wikipedia really discourages users from writing about things they are connected with, as well as advertising. I hope you can understand why. If you do know something about the guitolao, some additional sources and corrections would be welcome though. If learning how to use Wikipedia seems daunting, we have an easy tutorial at WP:The Wikipedia Adventure that teaches some basics. After that you might want to read Help:Referencing for beginners to learn how to add sources. If you need anything else, you can start your reply with (like I did using your username in my reply), which will notify me. Thanks, shoy (reactions) 14:02, 23 April 2019 (UTC)

Ok Shoy, thank you for sending the "quick" tutorial.

I understand the principle of separation. What if I provide the information from independent sources and you edit the article if you so choose?

The article must be corrected in terms of the tuning of the acoustic guitolao, because it refers G1 as the lowest note but in fact the lowest note is G2. All the notes are pitched lower than they are in reality. One step at a time: The guitolão is a perfect fifth lower than a Lisbon fado guitar, which is tuned in D3 (not in D2). Here is the frequency table for the Lisbon fado guitar according to the study "Caracterização da Resposta Modal Não - Amortecida de uma Guitarra Portuguesa incluindo as Doze Cordas" by Mechanical Engineer Jorge Alberto dos Santos Luís.

String Course	1º	2º	3º	4º	5º	6º Pitch/Note	b4 b4	a4 a4	e4 e4	b4 b3	a4 a3	d4 d3 Frequency (Hz)	493.88	440	329.63	493.88	440	293.66 493.88	440	329.63	246.94	220	146.83

1)Strings 1,2,8 (493,88 Hz) 2) Strings 3,4,10 (440 HZ) 3) Strings 5,6 (329,63 Hz) 4) String 7 (246,94 Hz) 5) String 9 (220 Hz) 6) String 11 (146,83 Hz) 7) String 12 (293,66 Hz)

So if one checks the pitch to note table on http://pages.mtu.edu/~suits/notefreqs.html it might be seen that the G1 is 49Hz, one full octave below what is the correct note of the lowest string of the guitolão: g2 at 98Hz, a flat 3rd above E 82,41Hz.

However, the newly invented electric guitolao is lower than the acoustic version. The lowest string is D2 @73,42Hz, a 4th below the acoustic guitolao, and a full octave bellow Lisboa fado guitar.

The sources referencing the electric guitolao are completely exempt, and the invention of the instrument was made public by reporters from RTP 1 which is the public television network, and cultural publications. I may provide technical data about the new instrument, if required.

Please consider the following news articles.

1. https://www.rtp.pt/noticias/cultura/guitolao-eletrico-o-novo-instrumento-inventado-por-um-portugues_n1141754 2. https://infocul.pt/cultura/pedro-alves-duarte-cria-o-guitolao-electrico/

Kind Regards,PedroAlvesDuarte (talk) 22:43, 27 April 2019 (UTC)