Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
OK Phil and what do we mean by Odb or 0db? Is it the amplifier being set to 0 db? -- jaysung jaysung's Profile: http://forums.slimdevices.com/member.php?userid=12375 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
jaysung;232313 Wrote: > Hi > now the resonance to my initiative is not all that welcoming. ;) But > any way. I have learnt something about test cds and burning in cables > again. That is good. I actually wanted to give a short report about > what happened when I played my little test file for I was actually > searching for a way to check my hearing and system and didn't have an > audio test cd handy... > MY amp was at -99db and I could still hear the sound playing. I didn't > hear the clipping I had inserted into the file. At arround 15000hz my > sense of definitely hearing something vanished. :( I was a little > disapointed. However my cats started to jump at the door to the room > quite violently when the file played on. I girl friend had a sense of a > presure amounting on her ear drums. It was nice to see the vu meter of > transporter fall and that presure being lifted again when the minute > was over. > Now I some questions: > 1. My Dali speakers are rated for 27khz +-3db. They have a ribbon high > tone module. Is this spec being realistic? Will copper cables or > anything in the signal path block such high frequencies and how big is > the risk of destroying speakers with such tests when they are actually > specified for such frequencies? > 2. By 0db we mean the signal as is without softer or louder > reproduction? Caus my normal listening range is far below 0 db. When I > turn my amp to about 0db my ears would just give me pain. PLEASE be very careful. OdB at HF will DESTROY your speakers HF unit. There is nothing wrong with your speakers, cables or ears. If you can hear anything at 15kHz consider yourself fortunate to have good hearing. Please do nothing to change that! I'm sure the spec for your speakers is realistic, but don't confuse frequency response with power handling! FR is NOT measured at 0dB. Most people prefer a gently rolled-off HF response. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... ...SB3+TACT+Altmann+MF DACXV3/Linn tri-amped Aktiv 5.1 system and some very expensive cables ;o) Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
Hi now the resonance to my initiative is not all that welcoming. ;) But any way. I have learnt something about test cds and burning in cables again. That is good. I actually wanted to give a short report about what happened when I played my little test file for I was actually searching for a way to check my hearing and system and didn't have an audio test cd handy... MY amp was at -99db and I could still hear the sound playing. I didn't hear the clipping I had inserted into the file. At arround 15000hz my sense of definitely hearing something vanished. :( I was a little disapointed. However my cats started to jump at the door to the room quite violently when the file played on. I girl friend had a sense of a presure amounting on her ear drums. It was nice to see the vu meter of transporter fall and that presure being lifted again when the minute was over. Now I some questions: 1. My Dali speakers are rated for 27khz +-3db. They have a ribbon high tone module. Is this spec being realistic? Will copper cables or anything in the signal path block such high frequencies and how big is the risk of destroying speakers with such tests when they are actually specified for such frequencies? 2. By 0db we mean the signal as is without softer or louder reproduction? Caus my normal listening range is far below 0 db. When I turn my amp to about 0db my ears would just give me pain. -- jaysung jaysung's Profile: http://forums.slimdevices.com/member.php?userid=12375 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
zanash;231993 Wrote: > test your room by claping once and listen to the decay ...much easier > and less damaging. > No need at the mo, its terrible :o , or if you like echos its Fab, I need a rug, book shelves, drape things etc... all in the plan :) Safe is good :D Phil Leigh;232086 Wrote: > Hard to say...if you stay in the room while it is playing it seems to > rewire your brain (reminds me of early Hawkwind...) > > I generally fire up the FLAC every month just to (allegedly) demag the > whole system - doesn't seem to do any harm and sometimes I can kid > myself it does actually work. > I think its main use is in burning in speakers... I'll er have a bash at rugs books etc before I worry about the Denson cd then ;) however, the idea is now lodged and if one pops up I'll give it a go. :) -- Deaf Cat Deaf Cat's Profile: http://forums.slimdevices.com/member.php?userid=515 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
inguz;231580 Wrote: > of course there's a name for that time interval. > "ohnosecond" ;-) ohnosecondwell done! It had me and my co-worker chuckling in the lab over lunch! might use that one if you don't mind. -- sfraser 2 Chan. System SB3->Benchmark DAC-1-> Bryston(BP-25,3B)->PMC TB2 Home theater System SB2-> Bryston(SP1,4B,4B)-> PSB Stratus Goldi sfraser's Profile: http://forums.slimdevices.com/member.php?userid=2026 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
Deaf Cat;231881 Wrote: > Hi Phil, > Do you find after playing it, you actually hear a difference ? Hard to say...if you stay in the room while it is playing it seems to rewire your brain (reminds me of early Hawkwind...) I generally fire up the FLAC every month just to (allegedly) demag the whole system - doesn't seem to do any harm and sometimes I can kid myself it does actually work. I think its main use is in burning in speakers... -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... ...SB3+TACT+Altmann+MF DACXV3/Linn tri-amped Aktiv 5.1 system and some very expensive cables ;o) Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
test your room by claping once and listen to the decay ...much easier and less damaging. I'll second the denson and I've the xlo disc thats relatively safe if you follow the instructions. -- zanash Acoustician and builder of interesting cables zanash's Profile: http://forums.slimdevices.com/member.php?userid=12157 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
Phil Leigh;231871 Wrote: > I use the DENSEN demag CD for that - it's safe. (as is the IsoTek one) > Hi Phil, Do you find after playing it, you actually hear a difference ? -- Deaf Cat Deaf Cat's Profile: http://forums.slimdevices.com/member.php?userid=515 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
Deaf Cat;231870 Wrote: > So errr, normal loud listening volume is not recommended then, for the > test, don't want anything going PoP! maybe 1/4 of normal? > > Is it stuff like this that is sold on those cds that are susposed to > give the speakers a good work out, and hence improve their performance, > or am I in the totally wrong field :o ? I use the DENSEN demag CD for that - it's safe. (as is the IsoTek one) You do not want to put a 20kHz sine wave at 0dB ANYWHERE near your speakers -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... ...SB3+TACT+Altmann+MF DACXV3/Linn tri-amped Aktiv 5.1 system and some very expensive cables ;o) Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
So errr, normal loud listening volume is not recommended then, for the test, don't want anything going PoP! maybe 1/4 of normal? Is it stuff like this that is sold on those cds that are susposed to give the speakers a good work out, and hence improve their performance, or am I in the totally wrong field :o ? -- Deaf Cat Deaf Cat's Profile: http://forums.slimdevices.com/member.php?userid=515 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
of course there's a name for that time interval. "ohnosecond" ;-) -- inguz inguz's Profile: http://forums.slimdevices.com/member.php?userid=1139 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
tyler_durden;231538 Wrote: > This sort of thing is a good way to destroy tweeters. Indeed so. It reminds me of the biggest case of brain-fade I ever had, audio-wise. Back in about 1990, I had a HiFi News test CD, and was interested in checking my hearing. After being pleasantly surprised that I could hear the 18kHz tone, I tried the 20kHz one. Needless to say, I heard nothing. So I thought to myself, "I wonder if I would hear it if I turned up the volume?". What I did hear, of course, was the inevitable "pop-pop" as both tweeters of one of my Linn Isobariks burned out. It took about a millisecond for me to realise what had happened and how stupid I had been. Luckily the tone was only playing on one channel. -- cliveb Transporter -> ATC SCM100A cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
Re: [SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
This sort of thing is a good way to destroy tweeters. Good luck to all who DL and run the file. This sort of thing would be a good "trojan" for the RIAA to put on P2P networks. Label it as some kind of popular song title and have 0dB 20 kHz + 0dB 20 kHz either sumperimposed on the music or replacing it altogether. The damage will be done in just a second or two, anyway. TD -- tyler_durden tyler_durden's Profile: http://forums.slimdevices.com/member.php?userid=2701 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
[SlimDevices: Audiophiles] Test your ears, Speakers or generate impuls response characteristics of your room!
Hello A friend of mine was so kint to provide me with a sine sweep from 20hz to 20khz lasting 60 seconds. It is a flac with 24 bits per sample and 96khz samples stereo. It was generated by csound and had some clicks added every ten seconds so that I would know the file was still playing. It can be used to test speakers, ears and to generate impuls response characteristics that could be helpful for room correction using inguz. But *** WARNING *** WARNING *** WARNING *** The energy of any given wave is proportional to its frequency meaning high frequencies carry loads of energy that could : - destroy the high tone driver of your speakers - SERIOUSLY HARM your ears (gave me a bit of pain actually ) - irritate bat man and your dog. Since high notes are generally perceived less likely by human hearing there is a temptation to raise the volume of your amp or to move closer to your high end speakers just to proove that the money spend for a transporter dac of any kint amp or speakers wasn't for nothing. DO NOT DO IT! I shall not be liable for any damage to you or your equippment! Just keep the volume down and listen how long you can actually hear something. The high frequencies have a longer duration since there are more frequencies to itterate through than in the low range which is just due to the fact that a linear algorithm was used. Low frequencies are therefore under represented in subjective hearing. Any reports about speakers transporter or sb3 performance are GREATLY welcomed. If you want other files for example with exponential itteration to have equal representation of low and high frequencies I might ask my friend. You can download the file here: http://www.masterid.de/sweep.flac Cheers Jeronimo -- jaysung jaysung's Profile: http://forums.slimdevices.com/member.php?userid=12375 View this thread: http://forums.slimdevices.com/showthread.php?t=38842 ___ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
