Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

Sensitivity of human hearing
Sensitivity of human hearing
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th June 2009, 07:17 PM   #21
markus76 is offline markus76  Germany
Banned
 
Join Date: May 2008
Location: Switzerland
Gabdx1,

have you read the paper?

Best, Markus
  Reply With Quote
Old 25th June 2009, 07:47 PM   #22
Gabdx1 is offline Gabdx1  Canada
diyAudio Member
 
Join Date: Jan 2009
I have done tests like these and there is no way anything above 20khz can be perceived as the signal itself. What you hear is artifacts only.

My point (6) should be revised as around 5% , all the other points unchanged.

Probably the speaker company gave them money to try to prove the advantage of using it for high sample rate. Besides that, I have no doubt the higher sample rate provide better sound, all other factors being equal.
  Reply With Quote
Old 25th June 2009, 07:52 PM   #23
markus76 is offline markus76  Germany
Banned
 
Join Date: May 2008
Location: Switzerland
Can you describe a little bit more in detail how your own tests were conducted?

Best, Markus
  Reply With Quote
Old 25th June 2009, 08:16 PM   #24
Gabdx1 is offline Gabdx1  Canada
diyAudio Member
 
Join Date: Jan 2009
I don't want to publish another useless test. This is nothing personal and this test was just for testing my system and my hearing, as they are dangerous I won't ever do it again.
  Reply With Quote
Old 25th June 2009, 08:32 PM   #25
markus76 is offline markus76  Germany
Banned
 
Join Date: May 2008
Location: Switzerland
So you only tested yourself and found that your hearing above 20kHz is limited? How can this finding lead to a general statement that (other) humans have the same limitations? Ashihara's paper shows the contrary. JASA is a peer reviewed publication.

Best, Markus
  Reply With Quote
Old 25th June 2009, 08:40 PM   #26
atmasphere is offline atmasphere  United States
diyAudio Member
 
atmasphere's Avatar
 
Join Date: May 2007
Gabdx1, I always bugged the manager about turning off the ultrasonic alarm. Just for fun (being a technician also, and curious) he set up one of our calibration mics; the alarm had no output below 23KHz.

No 'subharmonics' IOW. The fact that there is variance in human physiology is well-known. *Generally* we have hearing response that is 20-20KHz, but specifically some humans have more than that while others have less, depending on variables like age, health, genetics and the like.
  Reply With Quote
Old 25th June 2009, 08:56 PM   #27
Gabdx1 is offline Gabdx1  Canada
diyAudio Member
 
Join Date: Jan 2009
End of the article:
: The data, therefore, may not precisely represent the actual hearing threshold values of the particular ear. Further investigations are needed to provide more accurate estimation of the hearing threshold values.

It should reformulate: 'values to hear the distortions generated by the ear apparatus, harmonics produced by the propagation of the impulse through the bone structure etc.'

The author is not addressing the harmonics generated by the ear itself which accounts for the hearing sensation of the test subjects.

Also I never assumed anything from my hearing test.

If you can start to 'hear' a 25khz test tone at 110 db good for you because that just proved we can hear over 20khz !

It is as stupid as putting a 10hz tone at 110 db and say now do you hear it? That whole article is just plain BS.
  Reply With Quote
Old 25th June 2009, 09:00 PM   #28
markus76 is offline markus76  Germany
Banned
 
Join Date: May 2008
Location: Switzerland
Quote:
Originally posted by Gabdx1
Also I never assumed anything from my hearing test.
Quote:
20khz is not a generalization, it is tested as the maximum limit, all literature and all scientific tests never ever said you can hear above it.
  Reply With Quote
Old 25th June 2009, 09:13 PM   #29
Gabdx1 is offline Gabdx1  Canada
diyAudio Member
 
Join Date: Jan 2009
... you said 20khz is a generalization...
I said it is NOT, because it was tested many times and all references give that number, ok except some crappy test done by one engineer who knows probably nothing about how the ear works and who don't address any of the relevant issues.
  Reply With Quote
Old 25th June 2009, 09:18 PM   #30
nigelwright7557 is offline nigelwright7557  United Kingdom
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
Quote:
Originally posted by markus76
So you only tested yourself and found that your hearing above 20kHz is limited? How can this finding lead to a general statement that (other) humans have the same limitations? Ashihara's paper shows the contrary. JASA is a peer reviewed publication.

Best, Markus

I can barely hear above 10KHz but I am 52.

The ear has different responses at different volumes.

Some old amps used to have a loudness control that adapted the tone control for different loudnesses.
__________________
PCBCAD51 pcb design software. 2018 version out now. http://www.murtonpikesystems.co.uk
  Reply With Quote

Reply


Sensitivity of human hearingHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Distortion of human hearing PMA Everything Else 44 23rd April 2008 12:21 AM
Harmonics above 20Khz - "Hi-Fi" and the limits of human hearing percy Everything Else 62 12th March 2008 06:27 PM
Human Hearing................. Gavinator68 Everything Else 25 26th January 2006 03:15 AM
Sensitivity of human hearing JDT Subwoofers 8 15th April 2005 03:36 AM
human hearing sss Solid State 123 8th September 2003 08:57 PM


New To Site? Need Help?

All times are GMT. The time now is 05:41 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki