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Music note frequencies

by btb4198
Tags: frequencies, music, note
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btb4198
#1
Jan28-14, 12:56 PM
P: 272
I have been doing some research on music note frequencies.
and I am getting a lot of mix information.

ok middle C is 261.625565 hertz

Human can sing between 150Hz to 4K
Or between 60Hz to 2K ?
Also I tried this site
http://onlinetonegenerator.com/?freq=5000
and I cant hear
60Hz nor 82.407Hz
is that normal ?
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btb4198
#2
Jan28-14, 01:16 PM
P: 272
the highest note on a piano is B8 is 7902hz
can a human sing that?
Ouabache
#3
Jan28-14, 01:18 PM
Sci Advisor
HW Helper
P: 1,326
Quote Quote by btb4198
and I cant hear
60Hz nor 82.407Hz
is that normal ?
Hi btb, i am also a musician and was curious to see what you were writing about.
Hearing the audio spectrum varies with each individual. It can deteriorate depending on the
intensity of sounds you have been exposed to throughout your life and also the high end tends to
deteriorate with age.

That being said, i just tried the 60 and 82.407Hz signals this frequency generator made and i can hear both tones. It sounds like the intensity (volume) is attenuating with pitch (frequency), such that a 100Hz tone sounds louder to me than the 82.407Hz which sounds louder than 60Hz.

My suggested experiment: make sure you are using headphones of some kind. I am only using inexpensive earbuds. Set the volume on your computer to low (so as not to damage your ears). Try to find the lowest frequency you can hear with this tone generator. As you continue to generate lower pitches, you may find you need to step up the volume to hear them.

On your referenced site hearing test page, they recommend you sit in a "quiet room" and use "good quality headphones". So if you use that criteria, you can optimize the results of my suggested experiment. However, for comparison, in my environment, there is ambient noise (fan inside my laptop) and i am using cheap earphones.

Quote Quote by btb4198
the highest note on a piano is B8 is 7902hz
can a human sing that?
Yes, however I suspect you meant to compare to C8 (4186Hz) the highest note on a standard 88-key piano. Adam Lopez has vocalized a pitch as high as C♯8 (4434.92Hz), a semitone above C8.

AlephZero
#4
Jan28-14, 01:48 PM
Engineering
Sci Advisor
HW Helper
Thanks
P: 7,173
Music note frequencies

Quote Quote by btb4198 View Post
Human can sing between 150Hz to 4K
Or between 60Hz to 2K ?
It depends what you call "singing", but for western classical vocal music the standard range of fundamental frequencies is about 70Hz to 1kHz. Of course any one person can not sing all of that range, and some people can go a bit lower or a bit higher.

There is a "peak" in the harmonic spectrum of the human voice at about 3 kHz which can be quite strong in singing, independent of the fundamental frequency. The frequency range around 3 kHz is important in speech as well, and human hearing is most sensitive at that frequency.

I cant hear 60Hz nor 82.407Hz
is that normal ?
That is not normal. The most likely reason is that your PC has poor quality loudspeakers that can't reproduce sine waves at low frequencies. The loudness of the sounds will reduce at lower frequencies so you may need to increase the volume (but be careful when you raise the frequency again!!)

Most musical instruments do NOT produce pure sine waves, Low quality loudspeakers can reproduce the harmonics but not the fundamental frequency, and your brain "thinks" it can hear the fundamental frequency even when a measuring instrument says it doesn't exist. But if you play a pure sine wave from that web site, of course there are no harmonics.

FWIW with reasonably good quality speakers on my PC I can hear tones down to 30 Hz on that site without any problem.


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