Best frequency range test? |
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Best frequency range test? |
 Dec 11 2010, 23:29
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#1
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Group: Members Posts: 113 Joined: 22-January 08 Member No.: 50696  |
I've seen quite a few of these only, however, they all seem to have their share of problems from not going high enough in frequency (looking for 22khz or above) or if they are high enough then they do not have long enough clips (more than two seconds) which makes listening hard. Where can i find a good test that is guaranteed to go over my hearing capacity?
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Dec 11 2010, 23:53
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#2
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 Group: Members Posts: 4163 Joined: 2-September 02 Member No.: 3264 |
AFAIK foobar2000 will generate any tone you ask it for, and of any duration. Assuming you have at least a 48khz sample rate (really 96k is likely to be preferable), go to 'add location' and type 'tone://22000,10' for a 22kHz 10 second long tone.
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Dec 12 2010, 02:51
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#3
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Group: Members Posts: 113 Joined: 22-January 08 Member No.: 50696 |
where do i type that? i tried a lower frequency in the "filter" filed but nothing happened
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Dec 12 2010, 02:58
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#4
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Group: Members Posts: 4163 Joined: 2-September 02 Member No.: 3264 |
File Menu IIRC.
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Dec 12 2010, 07:40
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#5
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 Group: Super Moderator Posts: 9365 Joined: 1-April 04 Member No.: 13167 |
Make sure your hardware is capable of playing these signals without trouble. Depending on your signal, some hardware may resample poorly causing false-positives resulting from aliasing. If this is the case, configure foobar2000's resampler to convert the signal to your soundcard's native sample rate.
-------------------- Everything sounds the same until it is proven otherwise.
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Dec 12 2010, 09:53
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#6
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 Group: Members Posts: 561 Joined: 22-May 05 From: France Member No.: 22220 |
This site offers some interesting tests:
http://www.audiocheck.net/audiotests_frequencycheckhigh.php |
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Dec 12 2010, 12:12
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#7
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 Group: Members Posts: 1061 Joined: 16-February 08 From: NL Member No.: 51347 |
QUOTE (saratoga @ Dec 11 2010, 23:53)  AFAIK foobar2000 will generate any tone you ask it for, and of any duration. Assuming you have at least a 48khz sample rate (really 96k is likely to be preferable), go to 'add location' and type 'tone://22000,10' for a 22kHz 10 second long tone. Additionally, the command sweep://8000-10000,10 will generate a sweep. |
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Dec 12 2010, 12:16
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#8
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Group: Members Posts: 1061 Joined: 16-February 08 From: NL Member No.: 51347 |
QUOTE (Kees de Visser @ Dec 12 2010, 09:53) This site offers some interesting tests: http://www.audiocheck.net/audiotests_frequencycheckhigh.php A good one in terms of length and range, though the voiceover is something of a distraction. |
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Dec 12 2010, 18:12
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#9
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 Group: Members Posts: 538 Joined: 20-December 05 From: Springfield, VA Member No.: 26522 |
QUOTE (dhromed @ Dec 12 2010, 06:12) Additionally, the command sweep://8000-10000,10 will generate a sweep. Linear or logarithmic? -------------------- Ceterum censeo, there should be an "%is_stop_after_current%".
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Dec 12 2010, 18:18
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#10
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Group: Members Posts: 1061 Joined: 16-February 08 From: NL Member No.: 51347 |
The spectrogram displays a straight slanted line so I assume linear.
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Dec 12 2010, 22:38
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#11
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 Group: Members (Donating) Posts: 482 Joined: 13-October 01 From: Stuttgart Member No.: 286 |
the spectrogram per default has a logarithmic scale, so I assume the sweep is logarithmic
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Dec 13 2010, 00:31
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#12
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Group: Members Posts: 538 Joined: 20-December 05 From: Springfield, VA Member No.: 26522 |
The discrepancy of opinions made me check myself. It's logarithmic.
-------------------- Ceterum censeo, there should be an "%is_stop_after_current%".
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Dec 13 2010, 11:58
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#13
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Group: Members Posts: 1061 Joined: 16-February 08 From: NL Member No.: 51347 |
Indeed, my mistake. I find no aesthetic merit in the logarithmic scale, and had forgotten I'd set it to linear the very minute I started to use FB, several years ago. In addition to that, I commonly only use sweep to test a narrow bandwitdh of a few thousand Hz. The graph is then indistinguishable from a straight line.
That means I need to redo my listening tests of my ears' (or my equipment's) upper limit. Around halfway through 16KHz and 18KHz doesn't exactly mean 17KHz, though it's perhaps close enough. |
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Dec 13 2010, 13:11
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#14
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 Group: Members Posts: 3221 Joined: 29-October 08 From: USA, 48236 Member No.: 61311 |
QUOTE (dhromed @ Dec 13 2010, 05:58) Indeed, my mistake. I find no aesthetic merit in the logarithmic scale, and had forgotten I'd set it to linear the very minute I started to use FB, several years ago. In addition to that, I commonly only use sweep to test a narrow bandwitdh of a few thousand Hz. The graph is then indistinguishable from a straight line. That means I need to redo my listening tests of my ears' (or my equipment's) upper limit. Around halfway through 16KHz and 18KHz doesn't exactly mean 17KHz, though it's perhaps close enough. I question using pure sine waves for listening tests on the grounds that spectral masking is a huge influence in the human ear. |
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Dec 13 2010, 14:09
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#15
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Group: Members Posts: 561 Joined: 22-May 05 From: France Member No.: 22220 |
QUOTE (dhromed @ Dec 13 2010, 12:58) Around halfway through 16KHz and 18KHz doesn't exactly mean 17KHz, though it's perhaps close enough. 16, 17 and 18 kHz are roughly a semitone apart, so on the (imaginary) piano they are pretty close 
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Dec 13 2010, 14:21
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#16
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Group: Members Posts: 1061 Joined: 16-February 08 From: NL Member No.: 51347 |
QUOTE spectral masking is a huge influence in the human ear. I'm aware of that. Suppose I reach, say, 18KHz, I do not conclude from that that a 16KHz lowpass must sound like crap. This post has been edited by dhromed: Dec 13 2010, 14:22 |
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Lo-Fi Version | Time is now: 19th June 2013 - 07:35 |
