<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p><font face="Arial">Vy na něj jdete vědecky.... Já zkusil jinou
"pitomost": Přelož do angličtiny a zpátky větu:</font></p>
<p><font face="Arial">Fialová srnka pije kafe z hrnka.</font></p>
<p><font face="Arial">Výsledkem bylo:</font></p>
<p><font face="Arial">Purpurová laň pije kávu z kelímku.</font></p>
<p><font face="Arial">Na první pohled je to hrůza, ale když se nad
tím zamyslíte, dodržel přesně stejný smysl jen jinými slovy. Je
to tak hrozné?</font><br>
</p>
<pre class="moz-signature" cols="72">Martin Záruba</pre>
<div class="moz-cite-prefix">Dne 17.2.2024 v 19:09 Jan Waclawek
napsal(a):<br>
</div>
<blockquote type="cite"
cite="mid:PC1993202402171909120043db00a437@wekovci">
<pre class="moz-quote-pre" wrap="">Toto je OT, lebo z AI z principu nemoze vypadnut nic rozumne. Ale zabava s
tym byt moze.
Takze som sa hral s gemini od gugla a dal som mu tu otazku co sme tu
preberali o tom trojuholniku co ma len parne (sude) harmonicke.
V podstate zacal spravne:
Generating a triangular waveform with only even harmonics is not directly
possible in the traditional sense. A pure triangular waveform, by
definition, contains both odd and even harmonics.
Kebyze tu prestane, normalne by som povedal, fajn, odpoved ako z prvej
stranky co gugl najde, vsetko sedi. Ale nie, on blbec to ma nutkanie to
rozviest.
However, there are different approaches to achieve a waveform that
resembles a triangular wave but only consists of even harmonics:
Fajn, ze by to teda mohlo pripominat trojuholnik, no preco nie. Skusme si
to vypocut.
1. Modified Square Wave:
Generate a square wave with 50% duty cycle (equal on and off times).
Filter out all odd harmonics using a bandpass filter tuned to pass only
even multiples of the fundamental frequency.
The resulting waveform will appear close to a triangular wave, but not
perfectly symmetrical due to limitations of perfect filtering.
Cize to mame tvrdy vyhadzov z elementarnej matematiky. Podme dalej, mozno
sa nieco zaujimave este dozvieme
2. Sum of Even Harmonics:
Calculate the amplitude of each even harmonic using its inverse
harmonic number (1/2, 1/4, 1/6, etc.).
Sum the individual even harmonics at their respective frequencies.
This approach requires more complex processing but offers potentially
better control over the shape of the resulting waveform.
<a class="moz-txt-link-freetext" href="https://www.desmos.com/calculator/g5ixmigqfx">https://www.desmos.com/calculator/g5ixmigqfx</a> nie, toto trojuholnik
nepripomina ani zdaleka (znova, je tam verzia zahrnujuca fundamentalnu a
aj bez nej)
3. Digital Synthesis:
Use a digital synthesis technique like DDS (Direct Digital Synthesizer)
to generate a lookup table containing discrete samples of a desired
waveform shape.
atd. ani ciarka o tom, ako by sa dalo dosiahnut, aby tam tie neparne
(liche) harmonicke neboli.
4. Analog Synthesis:
Use analog circuit components like integrators and summers to create a
circuit that approximates the integration of a square wave, resulting in a
triangle-like waveform.
Tiez sa tu nijako neriesia tie parne harmonicke, na to uz tipek davno
zabudol; a najma to nie je analogova *synteza*, len uprava signalu -
syntezu nam tu predviedol pan kolega Lukesh ako fakt asi jedinu rozumnu
metoda ako dosiahnut "trojuholniku podobny priebeh", proste generovat
sinusy tych harmonickych a scitavat ich pomocou hejblatok dovtedy, kym
vysledok okometricky nebude trocha trojuholnikovity.
No nic, zazraky sa nekonaju.
wek
_______________________________________________
HW-list mailing list - sponsored by <a class="moz-txt-link-abbreviated" href="http://www.HW.cz">www.HW.cz</a>
<a class="moz-txt-link-abbreviated" href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a>
<a class="moz-txt-link-freetext" href="http://list.hw.cz/mailman/listinfo/hw-list">http://list.hw.cz/mailman/listinfo/hw-list</a>
</pre>
</blockquote>
</body>
</html>