Hello all audio experts,

I just have a question about my audio setup. Since I want to use my ipod or Altec Lansing speaker to listen some therapy music e.g. http://www.digipharm.com/index.php Some of them are recorded in very low Hz, like 0.5Hz or something.

I found the Frequency response of ipod shuffle earphone is 20Hz to 20,000Hz.
The Frequency response of Altec Lansing FX6021 is 32–18000 Hz.

So is it means I can't use these equipments to hear the therapy music?

20hz is about as low as humans can hear. It is possible to produce sound lower than that but it requires a bit of work with sub woofers.

Loud sound under 20hz shakes things, you can sort of feel it.

0.5hz is not easy or cheap to reproduce.... There is some fan sub ($$$$$) thing you might want to look into if you really want that sort of bass. Maybe a really large IB sub could do it as well.

Have Fun!

Take Zoloft like everyone else.

It is certainly odd that this music includes frequencies that no conventional loudspeaker or earphones can reproduce. I have it on good medical authority that the music of Mozart, who composed entirely in the audible range, works just as well. :)

WOW I wish I had thought of this scam.

Soma, Soma, Soma..................

So is it means I can't use these equipments to hear the therapy music?

.daed si luaP

Where did you see that they output .5hz tones? I looked at the site and found no mention of frequency ranges of the music.

Unfortunately, I believe you have wasted your money on a useless scam product. I am willing to venture that nobody on their "scientific" test panel had the ability to reproduce 0.5hz at any meaningful amount leading me to believe that if results actually occurred it was due to the placebo effect. There are a select few people in the entire world that can reproduce that sort of bass.

I listened to some of the samples and found them pleasant. My damaged knee did not improve however.

I was not able to find any specific frequency range mentioned, but there are many well known people listed on the site who are quoted supporting music as therapy. Some of them are dead.

I was going to ask how any audio CD could contain .5 Hz information, but with technical support like this why not have some faith.

The recordings are DDDDDD which for those who are not audio cognoscenti, is claimed to mean
http://www.micromusiclaboratories.net/pictures/Zeichen/Dyna6D.gif

It takes a lot of work to make put that many digitals in the recording chain.

http://www.micromusiclaboratories.net/pictures/Fotos/Teststrecke_04_900_Qu60.jpg

What BS! Watch a second hand on an analog clock. It's moving at 1 Hz. So .5 Hz would be 1 cycle every 2 seconds. That's way below the audio spectrum.

It is certainly odd that this music includes frequencies that no conventional loudspeaker or earphones can reproduce. I have it on good medical authority that the music of Mozart, who composed entirely in the audible range, works just as well. :)

Here's an interesting story in today's NY Times Science section: A Musician Who Performs With a Scalpel (http://www.nytimes.com/2008/05/20/health/20prof.html). Hopefully, it is free access and you don't need a Times account to see it.

This story is about a surgeon/musician who has been conduction scientific investigation of the physiological effects of music, And yes, he has a specific interest in Mozart. :) He's found that music produces an increase in the pituitary growth hormone. He argues that the growth hormone has a sedative effect. Some other researchers are not convinced.

Regards,
Terry

What BS! Watch a second hand on an analog clock. It's moving at 1 Hz. So .5 Hz would be 1 cycle every 2 seconds. That's way below the audio spectrum.


perhaps we are treading in star trek territory.. subspace :o