Sound is not Electromagnetic

[xmo1]

I have designed electronic circuits for radios and antennas, but just had to rehash this in my own feeble mind <img src="/images/icons/rolleyes.gif" />, so maybe someone can learn from it.<br /><ol type="1"><li><font color="yellow">Sound</font>/a> is a <a target="_blank" href="http://www.physicsclassroom.com/Class/sound/U11L1a.html"> <font color="yellow">mechanical</font>/a> wave. A sound wave is not electromagnetic.<li>Sound is not on the <a target="_blank" href="http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html"><font color="yellow">electromagnetic spectrum</font>/a>. <a target="_blank" href="http://images.google.com/images?q=electromagnetic+spectrum"><font color="yellow"><i> -EMS images</i></font>/a><br /><li><a target="_blank" href="http://en.wikipedia.org/wiki/Radio"><font color="yellow">Radio</font>/a> frequency is on the electromagnetic spectrum.<br /><li>The process of converting sound to radio frequency is called <a target="_blank" href="http://cse.ssl.berkeley.edu/impact/vos/links_other.html"><font color="yellow">sonification</font>/a>.<br /><li>The <a target="_blank" href="http://www.cf.ac.uk/biosi/staff/jacob/teaching/sensory/ear.html"><font color="yellow">ear</font>/a> uses transduction to convert sound to electrical events.<br /><li><a target="_blank" href="http://www.school-for-champions.com/science/sound_speed_gas.htm"><font color="yellow">The speed of sound in a gas</font>/a> (like air) can be calculated.<br /><li>Sonification allows people to hear <a target="_blank" href="http://cse.ssl.berkeley.edu/impact/vos/welcome.html"> <font color="yellow">the sounds of space</font>/a> such as <a target="_blank" href="http://science.nasa.gov/headlines/y2004/20feb_radiostorms.htm"> <font color="yellow">the radio storms on Jupiter</font>/a>.</a></li></a></li></a></li></a></li></a></li></a></a></li></a></a></li></ol> <div class="Discussion_UserSignature"> <p>DenniSys.com</p> </div>

 

[igorsboss]

I wrote a college term paper on sonification a few years ago, and created a sonification project to go with it.<br /><br />I don't agree with #4, by the way...<br /><br />Here are some other ways to look at it...<br /><br />Sonification is the mapping of events in a non-acoustic study domain to events in an acoustic domain, so that by experiencing the events in the acoustic domain, we learn something about the study domain.<br /><br />or, in other words, <br /><br />Sonification is like graphing, but with sound rather than diagrams.<br /><br />Audification is the simplest form of sonification. It involves converting one waveform into an acoustic waveform for human perception. For example: Listening to time lapse seismic data.<br /><br />The poster child for sonification is the Geiger counter. There is nothing acoustic about ionizing radiation, but the familiar clicks are like a sonic icon for radiation.<br /><br />Sonification usually implies some level of abstraction is introduced between the study domain and the acoustic domain. That is, a sonification is created to meet the specific goals of the study.<br /><br />If a sonification also obeys musical rules, it is a Musical Sonification. The "Climate Symphony" is an example of a musical sonification.<br /><br />I've personally created two pieces of sonification software. One converts seismic data recordings to time-lapse WAVE files. I used it to listen to Mt. St. Helens. The other is a sonification of Windows (operating system) performance. I use it to hear how many IP datagrams are being used by various web sites, or as a CPU usage alarm.<br /><br />Let me know if you would like to explore this further...

 

[i_i_e]

"Sound is not Electromagnetic"<br /><br />This is news? That's like saying "a rock is not a baby".<br /><br />EDIT: Your point 4 is wrong (so 7 is wrong as well.) Sonification is the PRODUCTION of sound. To some extent, you MIGHT be thinking of modulation. Modulation is the introduction of, or the adding of, information (sound, video, data) to an RF carrier.<br /><br /><i>son·i·fi·ca·tion (sn-f-kshn)<br />n.<br /><br /> The production of sound.<br /><br /><br />Source: The American Heritage® Stedman's Medical Dictionary<br />Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.<br /><br />sonification<br /><br />Son`i*fi*ca"tion, n. [L. sonus sound + -ficare (in comp.) to make. See -fy.] The act of producing sound, as the stridulation of insects.<br /><br />Source: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.</i>

 

[igorsboss]

Your dictionaries are copyrighted no later than 1995 or 1996. Since then, there has been work to extend the definition of the word "sonification".<br /><br />The extended definition (while not definitively written yet) will be something like: using sonic abstractions to study non-acoustic events.

 

[igorsboss]

<font color="yellow">Sonification allows people to hear the sounds of space such as the radio storms on Jupiter</font><br /><br />Almost, but not quite. I get the general idea of what you are trying to say, but I disagree with the wording...<br /><br />Try this:<br />Sonification allows people to study the radio storms on Jupiter by listening to sounds which are produced using a sonic abstration of the radio storm data.<br /><br />Even though the phrase "hear the sounds of space" is unphysical, it has a certian poetry about it.

 

[nexium]

We can use a microphone to produce voltages and currents which resemble the sound wave forms, but this is not RF, nor electromagnetic. A very large antenna array could change these voltages and currents to photons of electromagnetic radiation occupying a rf band from about 30 hertz to about 30,000 hertz. There would not be even a virtual carrier as in SSB = single side bad, so conventional receivers would produce a sound, as if the carrier was badly over modulated. Logic suggests that a receiver that can restore the original sound with reasonable fidelity should be possible, but I have no idea how to design such a receiver. Neil

 

[xmo1]

<Sonification is the mapping of events in a non-acoustic study domain to events in an acoustic domain, so that by experiencing the events in the acoustic domain, we learn something about the study domain.><br /><br />Thanks. That is SO good.<br /><br />Here is a link beginners:<br />http://cse.ssl.berkeley.edu/impact/vos/beginners.html<br /><br />and some great pictures of sound waves:<br />http://www.privateline.com/TelephoneHistory/soundwaves.html<br /><br /> <div class="Discussion_UserSignature"> <p>DenniSys.com</p> </div>

 

[xmo1]

God a code? Never seen a code in English.<br />single side band<br /><br />http://www.fas.org/man/dod-101/navy/docs/es310/SSB.htm <br /><br />Just teasin.<br /><br />Thanks everyone. <div class="Discussion_UserSignature"> <p>DenniSys.com</p> </div>

 

[igorsboss]

You can read about and hear a live musical sonification of Windows performance counters by visiting my website, at home.comcast.net/~igorsboss