Talk:Missing fundamental

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Contents 1 misnomer? (title by 172.x.x.x) 2 see also? SRS? 3 Double Bass sound 4 Radio stations

[edit] misnomer? (title by 172.x.x.x)

How can a periodic signal be missing any fundamental frequency? If the fundamental frequency corresponds to the shortest repeating period then it has to exist for any periodic signal. For example the signal, sin(2x) + sin(3x), will repeat exactly as often as sin(x) to which they 'refer'. Even if a signal lacks a component with the same frequency as its fundamental, it still has the same fundamental frequency.

This is psychoacoustics, not physics. You are using the overtone series to create the illusion of a fundamental. The real fundamental is stripped out, too low to hear, or is being simulated. Whether a fundamental that is psychoacoustically inaudible exists or does not exist is a philosophical matter.172.151.119.150 22:21, 29 April 2007 (UTC)

[edit] see also? SRS?

Can someone expand the refered acronym (SRS)

Its a company name.--Light current 12:46, 7 May 2006 (UTC)

Ok, so what is it doing in the article? I've followed, the connexion is not transparent (besides being both related to audio)

Try this [1] .Could you please sign your posts by typing 4 tildes ~~~~ . Thanks.--Light current 23:58, 10 May 2006 (UTC)

Sorry, I don't get it, I'll quote:

( http://www.srslabs.com/home100.asp ::)

Welcome to SRS

SRS Labs develops audio, voice and surround sound technologies that enrich and enhance the audio experience of any consumer electronics product. Over 300 of the world's top consumer electronics manufacturers look to SRS Labs to provide patented audio techniques when designing their newest products.

Found in over 600 million products worldwide, SRS Labs is widely recognized as the mark of powerful and immersive sound. Select a category on the left to explore the company's wide range of audio technologies and see for yourself how SRS Labs makes great products sound even better. "

It looks like marketing hype, how is it related directly to the Mising fundamental page? Oyd11 17:20, 14 May 2006 (UTC)

Its the company web page. You have to search for the list of products in the glossary. THen you find:

TruBass®

Psychoacoustic bass enhancement for speakers and headphone systems that delivers bass up to an octave below the physical capabilities of the speaker's driver.

If you look at the other link, there is more detaill on the SRS system [2]--Light current 11:35, 15 May 2006 (UTC)

[edit] Double Bass sound

I believe this phenomenon makes the DB sound lower than it actually is!--Light current 19:31, 29 August 2006 (UTC)

You may be right. f=73 and f=55 have peaks at the second harmonic. f=41 has a peak at the third harmonic. You could test your theory by looking at the overtone series and mimicking it with CoolEdit. (source: Music, Physics, and Engineering, 2nd ed, Dover.)172.151.119.150 22:05, 29 April 2007 (UTC)

[edit] Radio stations

I think some FM stations are using this trick. The US pop stations have a heavier sound, even on cheap systems. Combined with compression, it sounds like crap.172.151.119.150 22:30, 29 April 2007 (UTC)