and Test Tones
2013.05.30'19:16 - Referral Page : The link at the bottom points to the Pink Noise instead, but when I changed the URL manually, I was able to download the Brown Noise ;)
2013.05.29'18:41 - Referral Page : Hi there, wonderful site. Was wondering if you knew where I could get a set of speakers that I am thinking of branding tested here in the states. Thanks
2013.05.27'21:44 - Referral Page : First of all great website! It's really helped me learn to the subtle differences between frequencies and I would definitely donate $ if there was an option to do so. A way this site could be improved in my opinion is if there was another set of freq boosts/notches tests that went by the instrument instead of the whole mix. Ie "which instrument is boosted at what freq by 6 db" or something like that. Obviously you guys would know a better way to go about it but that would be very helpful!
2013.05.15'10:40 - Referral Page :
Very nice ! Thank you Sir!
2013.05.13'2:37 - Referral Page :
My hearing cuts off pretty dramatically at 8k. i did the Hi frequency test with the threshold set to 12k and passed. But I believe I did this mainly by sensing a boost in volume at the low frequencies. So I'm guessing that the total power is held constant? Or is it an illusion on my part?
I didn't mean to suggest there was a slope. If I take the full spectrum and create a new signal by cutting off all above 12 k, but keep total power the same, then everything below 12 k rises equally. true? Is that happening?
2013.05.05'1:58 - Referral Page : My name is Norberto Amaral and I have been invited to give a talk in TEDxLuanda in Luanda, Angola. I would like to use two sound files I got from this website (...) in my presentation and kindly request your permission to do so. This is a non-commercial event and I am NOT earning any money, nor anyone in the event's organization. Thank you for your time, Norberto
2013.05.04'13:05 - Referral Page : Have you thought about making these tests available as an iOS app? Or is there a test app that you would recommend?
2013.04.30'17:58 - Referral Page : Great page - cleared some of the stuff up with my system!
2013.04.26'15:36 - Referral Page :
with reference to the table on this page surely the top row represents the 8th harmonic of the bottom row etc The bottom row being the fundamental or 1st harmonic the next row up is the 2nd harmonic, the next row the 4th harmonic, finally the 8th harmonic at 8 times the fundamental frequency. other harmonics will occur at 30, 50, 60, 70, Hz etc.
2nd Harmonic can also be known as 1st overtone.
2013.04.25'16:27 - Referral Page : What about front right, front left, and back right, back left?
2013.04.22'0:27 - Referral Page : i can't hear my webpages
2013.04.06'4:09 - Referral Page :
in reference to masking effect idea on 2013.02.11, see this graph
2013.03.31'23:06 - Referral Page : These square/triangle/sawtooth generators have bad aliasing. Generate a square/saw/triangle wave at 15 kHz or so, and you can clearly hear all the aliased harmonics. You can see them on the spectrum too at -40 dBFS or so. Creating the waves through additive synthesis of sine waves up to fs/2 is the easiest way to avoid this. https://gist.github.com/endolith/407991
2013.03.26'10:34 - Referral Page : Pre-compiled audio test CD's
2013.03.23'20:52 - Referral Page : Really cool test! I got 17Khz !!!!
2013.03.22'4:42 - Referral Page : This site rules. Thank you so much!!
2013.03.17'22:56 - Referral Page : Cool site, thanks. Never would have guessed that English is your second language, didn't notice anything that needed correcting - better than most native English speakers!
2013.03.13'0:11 - Referral Page : Can the Quality test that is the bass shaker damage my headphones? I played it at high volume and could see the drivers under a lot of stress. I had rattling a few times but these are brand new headphones. Thanks
2013.03.10'12:56 - Referral Page :
This is a great test. However to a newbie it took me far too long to understand how to use it. This was probably because I started on a page where I could not hear the difference between the two types. The page should explicitly state something similar to the following in my opinion to make it abundantly clear.
Listen to the reference files of full range and the low-pass filtered noise. If you can hear a difference try the test otherwise pick a lower frequency. For the test, each of the 10 files is either a full range or a low-pass filtered noise. Listen carefully and pick one. You can replay the reference files above as a comparison when making your choices.
2013.03.09'5:08 - Referral Page : its greAT
2013.03.06'14:39 - Referral Page : Timing Difference should be less than 0.5 ms. Find a sample at http://we.tl/IsCJwHJLn6.
2013.02.25'14:04 - Referral Page : Congratulations. Best online hearing test I have seen so far
2013.02.25'13:45 - Referral Page : Add test sounds for 4 channel stereo - 2 left, 2 right.
2013.02.16'10:44 - Referral Page : Great site, but unable to download Timing Difference and Low-Pass Filtering wav file under Stereo Perception and Sound Localization.
2013.02.11'7:12 - Referral Page : How about some examples of masking effects.. like start out with a 1.2k tone and say 3k tone at same level and then keep running the 1.2k tone up in level, etc. you could do it for serveral frequenceis and would be really cool. thank you for the great site. Tom J. .
2013.02.08'14:54 - Referral Page : The test sweep file is encoded in a 192kbps MP3 file which has a low pass filter as well as a shelving filter to remove unnecessary audio data. Depending on the encoder presets, frequencies from 17-22kHz can be severely attenuated or even inaudible which affects the integrity of this test. If the file was recorded in PCM audio or saved as a WAV file, you can use FLAC encoding which is lossless compression(perfect audio data, but smaller file size).
2013.02.07'22:41 - Referral Page : Can you add more notes to perfect pitch test? Like three groups: C scale, chromatic scale and expanded chromatic scale (more than 1 octave)
2013.02.06'15:11 - Referral Page : Just perfect, really. You are very professional and because it is easy to use your blind audio test, I learned how to answer correctly. I can answer 10/10 correctly now. Thanks.
2013.02.05'21:55 - Referral Page : I was doing your low frequency harmonic test, and I hear 10 hz. you say there is no way I hear it. Is it because of my earphones? Thanks.
2013.02.03'19:49 - Referral Page : At what playback level (in Db) is your grey noise calibrated at?
2013.01.21'23:15 - Referral Page : This site would be even nicer if you provided the wav files along some sort of hash like md5 to reduce chances of corruption.
2012.12.30'0:24 - Referral Page : I think the dynamic range test is broken. The first and second sounds are the same for both NdB and Mute, for all dB levels.
2012.12.29'22:38 - Referral Page : I scored 9 out of 10 in the frequency test at 10 k, but it's easy to tell because the filtered version is always louder. This is a bug in the test.
2012.12.27'22:20 - Referral Page : left & right test files are the same, please update
2012.12.20'17:46 - Referral Page : This was very interesting. I was able to quantify how bad my hearing is at higher frequencies. Fortunately it is fine between 250 and 1K. Thanks for this resource.
2012.12.19'15:51 - Referral Page : Nice website with fun tests
2012.12.12'21:26 - Referral Page : Would it be possible to release a tool that creates a sweep tone in CSV format?
2012.12.05'23:45 - Referral Page : A surround sound test: Left, Right, Centre, Side Left, Side Right, Back Left, Back Right and LFE channels.
2012.11.25'17:15 - Referral Page :
Could you test the Quies Confort foam earplugs? I believe the announced -35db nrr is really optimistic especially on low frequencies.
2012.11.02'7:41 - Referral Page : what program was used for mp3 compression (using Fraunhofer it seems)?
2012.10.20'4:27 - Referral Page :
How can i do linear combination of single tone signals in you website.
2012.10.19'2:32 - Referral Page : Outstanding Page and Tests... Thanks a Bunch DJTunes of California
2012.10.17'12:17 - Referral Page : Very nice!!
2012.10.15'14:35 - Referral Page : Haha, I only started hearing anything at 130Hz on my laptop speakers xD I heard the man's voice fairly clearly though. ( Was the sound not at the same volume as the man's voice..? Maybe this can be changed so people don't have to crank their speakers up possibly..? And every sound is the same volume? Or is that even possible? ) Hmm. And I'm fairly young too, 20..and my speakers are sonicmaster's by ASUS on my ASUS N53SV-A1. Just thought I'd give some feedback on this, thanks for reading. ^_^
2012.09.24'13:34 - Referral Page : Love that binaural part, very nice!
2012.09.21'16:23 - Referral Page : The "blue play button" is not on the the right hand side! It's on the left!!!
2012.09.19'23:41 - Referral Page : This is a treasure trove! Well done, I'll keep coming back. Sadly I still suck at the EQ exercises. Cheers, Sigi
2012.08.14'10:41 - Referral Page : I got to 16kHz before I heard the noise, but my dog nearly took out my laptop the minute I clicked play.
2012.08.08'7:47 - Referral Page : Hello. Your site is excellent but could you make it HTML5 compliant. And i mean with open source formats and the appropriate tags. Thanks.
2012.08.07'0:57 - Referral Page : "Hz" as shibboleth, cute
2012.08.02'11:34 - Referral Page : Sometimes in this hobby, it is good to do a reality check!
2012.07.27'08:40 - Referral Page : Literally a treasure trove of information
2012.07.25'23:53 - Referral Page : OK;)
2012.07.25'22:24 - Referral Page : I have one receiver and two sets of speakers. Now I know which I'll use in the new place. Thank you!
2012.07.23'18:15 - Referral Page : Very interesting totally subjective test signals. Thanks!
2012.07.22'07:49 - Referral Page : Audio experts should stay away from this site, as it will prove how good their ears really are!