Another interesting reference:
http://www.digitalprosound.com/2002/03_mar...ng_excerpt1.htm
Full Version: Chart - Frequency Spectrum & Instruments
Thought this might be a handy reference for some members.
Another interesting reference:
http://www.digitalprosound.com/2002/03_mar...ng_excerpt1.htm
Another interesting reference:
http://www.digitalprosound.com/2002/03_mar...ng_excerpt1.htm
can i just ask, how often do we listen to music that has frequency above 10,000hz? what is some example of sound that is above that freq.? does Luciano Pavarotti reach above 20,000hz?
i just thought it would be useless to adjust the PEQ for frequencies above that range if we dont even get to hear those freq. band....
i just thought it would be useless to adjust the PEQ for frequencies above that range if we dont even get to hear those freq. band....
I'm trying to find a more detailed chart, but in the mean time this will do.
hmmm interesting!! 
since he's only a tenor...probably not
frequencies produced by cymbals, especially bright rides can reach up into these frequencies (obviously not the core frequency of the cymbal, but harmonics and overtones)
frequencies produced by cymbals, especially bright rides can reach up into these frequencies (obviously not the core frequency of the cymbal, but harmonics and overtones)
Thaks Marc - I was trying to find that first graph just now - but missed this thread. Good on ya for making it sticky.
stupid me, no wonder i dont hear any difference when adjusting the peq at 20,000hz.
aaawesome.
been looking for a breakdown like this for a long time. great guide upon which to get your system sounding brill!
d
been looking for a breakdown like this for a long time. great guide upon which to get your system sounding brill!
d
very true... wish it had some percusion tho.. as that has the brightest and the deepest tones.. (my zildjian z custom mega bell at home gets so bright it aint funny... and the avedis sweet rides are worse) down to the big 24" bass drums goin around... but ill get over it...
I think the most audiable range for EQ if you want to make your top end sound more open is in the 16K to 18K center frq in parametric. beyond this you really need a super good tweeters to here the diffrernt and only youngster may here it. the older people might not be able to here up to this range subject to age and health condition.
too true. the owner of the hifi store i used to work at had very golden ears... well respected golden ears. but his top end didn't exist 
thats why he loved his metal domes and ribbons... they compensated somewhat for his age and hearing condition.
d
thats why he loved his metal domes and ribbons... they compensated somewhat for his age and hearing condition.
d
From the Pioneer P9 Manual...
20-40Hz - This sound range feels almost like pressure on the ears of the listener, particularly if the sound is too strong.
40-80Hz - In this range, the listener feels they have heavy bass. This is also the range in which the impact of the sound is felt in the body. Excessive sound in this range will impair the clarity of the overall sound.
80-200Hz - The sound range required for bass. A lack of sound in this range results in a weak bass impact, while excessive sound will muffle the overall sound. A clear reproduction lends depth to the overall sound.
200-800Hz - This is the sound range in which the signals are most dense and where the sound outline is created. A lack of sound in this range results in a lack of warmth. Excessive sound dims clarity.
800-2kHz - The sound range required for the core of the sound. An important range for keeping the overall sound quality in balance.
2k-5kHz - In this range, the sharp, expansive sounds of the brass and electric guitar are felt. However, excessive sound in this range is tiring on the ears.
5k-10kHz - This sound range add colour and gaietyto the overall sound. A lack in sound in this range will result in a muffled overall sound, while excessive sound will enhance the metallic aspects.
10k-20kHz - This range is required for the glamorous sound of the cymbals. However, this range does not contain the basic frequencies of almost all the instruments. Therefore, if the sound in this range is lacking somewhat, the overall sound quality will not deteriorate markedly.
20-40Hz - This sound range feels almost like pressure on the ears of the listener, particularly if the sound is too strong.
40-80Hz - In this range, the listener feels they have heavy bass. This is also the range in which the impact of the sound is felt in the body. Excessive sound in this range will impair the clarity of the overall sound.
80-200Hz - The sound range required for bass. A lack of sound in this range results in a weak bass impact, while excessive sound will muffle the overall sound. A clear reproduction lends depth to the overall sound.
200-800Hz - This is the sound range in which the signals are most dense and where the sound outline is created. A lack of sound in this range results in a lack of warmth. Excessive sound dims clarity.
800-2kHz - The sound range required for the core of the sound. An important range for keeping the overall sound quality in balance.
2k-5kHz - In this range, the sharp, expansive sounds of the brass and electric guitar are felt. However, excessive sound in this range is tiring on the ears.
5k-10kHz - This sound range add colour and gaietyto the overall sound. A lack in sound in this range will result in a muffled overall sound, while excessive sound will enhance the metallic aspects.
10k-20kHz - This range is required for the glamorous sound of the cymbals. However, this range does not contain the basic frequencies of almost all the instruments. Therefore, if the sound in this range is lacking somewhat, the overall sound quality will not deteriorate markedly.
Even if you can't hear those upper frequencies your skin will still pick them up as a Psychacoustic Effect. It all adds to the realism. Why do you think SACD and DVD-Audio go right up to 40Khz and beyond? Because it sounds more real! You can test this for yourself. If you walk into a room with a TV on with the volume down, you immediately sense that it is on, even though you can't hear it. An extended frequency response is very important and has been known in home stereo for several years now.
QUOTE (Gonadman2 @ Jan 12 2006, 08:45 PM) 
If you walk into a room with a TV on with the volume down, you immediately sense that it is on, even though you can't hear it.
Hmm interesting. Ive always wondered why that was.
QUOTE (Gonadman2 @ Jan 12 2006, 08:45 PM)
If you walk into a room with a TV on with the volume down, you immediately sense that it is on, even though you can't hear it.
tv oscillator is only 16kHz
but yes, we do 'sense' frequencies above 20kHz - in me it sounds like a buzzing in my head when loud @ ~20kHz
My understanding is that psychoacoustic effects are still debated. Do we have any scientifically conclusive tests/data prooving it? The bits Ive read are critical of the idea.
like anything, test results can be used to prove anything.
depends on how you do the test, how you measure the results and how you interpret the measurements.
depends on how you do the test, how you measure the results and how you interpret the measurements.
haha its like i can hear thos electric bug repeler things that u plug into the power point and they emit a frequencie that only the dam bugs are soposed to hear!they drive me absolutly nuts.
I studied sound at the Con up here in Qld, and we had a very cool research project we did every year. We could do it on anything at all we wanted. People came up with some great stuff.
One year some guys did a bunch of listening tests with random people, to determine how high a frequency people were able to hear the difference between a sine wave and a sawtooth wave. Turned out people could pick them apart at 15kHz.
The point was that sine waves and sawtooth waves should be identical up to the first harmonic - which is double the root frequency. In other words, according to theory at least, people were hearing things at 30kHz (and they were neither small children, nor dogs).
I've thought about this a lot over the years, and really wish i knew more about their methodology, because it's a pretty damned interesting result ;-)
One year some guys did a bunch of listening tests with random people, to determine how high a frequency people were able to hear the difference between a sine wave and a sawtooth wave. Turned out people could pick them apart at 15kHz.
The point was that sine waves and sawtooth waves should be identical up to the first harmonic - which is double the root frequency. In other words, according to theory at least, people were hearing things at 30kHz (and they were neither small children, nor dogs).
I've thought about this a lot over the years, and really wish i knew more about their methodology, because it's a pretty damned interesting result ;-)
QUOTE (xen @ Mar 23 2006, 08:39 PM)
I studied sound at the Con up here in Qld, and we had a very cool research project we did every year. We could do it on anything at all we wanted. People came up with some great stuff.
One year some guys did a bunch of listening tests with random people, to determine how high a frequency people were able to hear the difference between a sine wave and a sawtooth wave. Turned out people could pick them apart at 15kHz.
The point was that sine waves and sawtooth waves should be identical up to the first harmonic - which is double the root frequency. In other words, according to theory at least, people were hearing things at 30kHz (and they were neither small children, nor dogs).
I've thought about this a lot over the years, and really wish i knew more about their methodology, because it's a pretty damned interesting result ;-)
One year some guys did a bunch of listening tests with random people, to determine how high a frequency people were able to hear the difference between a sine wave and a sawtooth wave. Turned out people could pick them apart at 15kHz.
The point was that sine waves and sawtooth waves should be identical up to the first harmonic - which is double the root frequency. In other words, according to theory at least, people were hearing things at 30kHz (and they were neither small children, nor dogs).
I've thought about this a lot over the years, and really wish i knew more about their methodology, because it's a pretty damned interesting result ;-)
Play a sinewave at 20khz and most people (apart from those under about 12) probably won't hear anything.
Play a square wave at 20khz and many more will notice something due to the harmonics. Even if they can't hear the fundamental certain individuals will sense something even if they don't perceive it as sound. It may simply make some of them feel uncomfortable or agitated without even knowing why.
I can hear 80khz! Well to be more to the point I heard the effect 80khz switchmode noise had on frequencies in the audible range... BAD!!
Intermodulate two frequencies and you don't just get the combination of those two frequencies alone... new frequency by-products can result.
Even frequencies well outside of the range of human hearing can have audible results when combined with those within the audible range. This can be both good and bad. Harmonics that cannot be heard in isolation intermodulate with, and add characteristics to those sounds we can hear. Wide bandwith audio systems (SACD etc) potentially provide a greater degree of fidelity (with suitable wide bandwith recordings). However poor shielding, filtering, power supply rejection and common mode rejection can cause unwanted ('out of audible range') noise to enter and have a corresponding negative effect on the sound we can hear.
Would you feel completely comfortable starting a recording project using totally unbalanced equipment (even mic lines) even if you couldn't hear any audible noise with the monitoring cranked right up?
I know I wouldn't!
how do i choose which frequencies i use? i have a 7 band PEQ (7 high and 7 low i think) and there are alot of different frequencies i could use....how do i choose?
or is it really just dependant on my car ?
or is it really just dependant on my car ?
it depends on your taste, rather than the car.
you need to try each setting and see how it changes the sound, then leave it where you like it best.
you need to try each setting and see how it changes the sound, then leave it where you like it best.
I did an online audiogram, so did my cousin, and strangely we couldn't hear 18KHz but we could hear 20KHz.
http://www.digital-recordings.com/cgi-bin/audio_test_p.cgi
http://www.digital-recordings.com/cgi-bin/audio_test_p.cgi
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