Phon
The phon is a unit of loudness level for pure tones. Its purpose is to compensate for the effect of frequency on the perceived loudness of tones. The phon was proposed in DIN 45631 and ISO 532 B by S. S. Stevens.
Definition
By definition, the number of phon of a sound is the dB SPL of a sound at a frequency of 1 kHz that sounds just as loud.[3] This implies that 0 phon is the limit of perception, and inaudible sounds have negative phon levels.
The equal-loudness contours are a way of mapping the dB SPL of a pure tone to the perceived loudness level (LN) in phons. These are now defined in the international standard ISO 226:2003, and the research on which this document is based concluded that earlier Fletcher–Munson curves and Robinson–Dadson curves were in error.[citation needed]
The phon unit is not an SI unit in metrology. It is used as a unit of loudness level by the American National Standards Institute.
The phon model can be extended with a time-varying transient model which accounts for "turn-on" (initial transient) and long-term, listener fatigue effects. This time-varying behavior is the result of psychological and physiological audio processing. The equal-loudness contours on which the phon is based apply only to the perception of pure steady tones: tests using octave or third-octave bands of noise reveal a different set of curves, owing to the way in which the critical bands of our hearing integrate power over varying bandwidths and our brain sums the various critical bands
Phon (disambiguation)
Phon may mean:
See also
List of craters on Mars: O-Z
This is a list of craters on Mars. There are hundreds of thousands of impact crater on Mars, but only some of them have names. This list here contains only named Martian craters starting with the letter O – Z (see also lists for A – G and H – N).
Large Martian craters (greater than 60 km in diameter) are named after famous scientists and science fiction authors; smaller ones (less than 60 km in diameter) get their names from towns on Earth. Craters cannot be named for living people, and small crater names are not intended to be commemorative - that is, a small crater isn't actually named after a specific town on Earth, but rather its name comes at random from a pool of terrestrial place names, with some exceptions made for craters near landing sites. Latitude and longitude are given as planetographic coordinates with west longitude.
O
P
Q
R
S
T
U
V
W
X
Y
Z
See also
References
Podcasts:
P:HON
ALBUMS
- P:HON released:
Phon
ALBUMS
- Hamburger Bunker Sampler released: 1998
Phön
ALBUMS
- Bluebox Sampler Vol. 1 released: 2007
- Bluebox Sampler, Volume 2 released: 2007
Phon
ALBUMS
- Con Ritimo Y Sabor / Mining released: 2000
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by Fun
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by Vaine
Where We Are Now
by: VannaI just can't get the ending right.
I'm so desperate tonight.
It seems only right to let the shadows lead the way.
If I could only just decide.
To let go of my insides.
I know that I'll never have to feel this way again.
And I'm caught in between.
My waking life and dreams.
Death's just as lonely as before.
I still remember you when.
This is all too familiar now.
I know I've seen this place before. But I just don't recall.
I don't feel like I'm awake. But I'm not dreaming.
What was it that I came here for?
They held us down.
But now we're breaking loose.
We swore that we'd let nothing stand in our way.
And when I'm gone.
I will come back to haunt you.
I'll still watch over you my love.
When you're on your way to me.
Don't forget the taste of me.
And don't forget the feel of me.
With my arms around you.
Those memories will never fade.
Like all the promises we made.
This is all too familiar now.
I know I've seen this place before. But I just don't recall.
I don't feel like I'm awake. But I'm not dreaming.
What was it that I came here for?
From below. The sun will rise.
And give us time to clear our heads.
The end is breathing down my neck.
Though hope is all that we have left.
The pain in understanding. Why we can't take it all back.
It's time to finally let go. Of everything we've known.
This is all too familiar now.
I know I've seen this place before. But I just don't recall.
I don't feel like I'm awake. But I'm not dreaming.
What was it that I came here for?
I swear I'll find you before I drift away.
This is all too familiar now.
I know I've seen this place before. But I just don't recall.
I don't feel like I'm awake. But I'm not dreaming.