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Post by Kamac on Aug 6, 2008 11:12:52 GMT
Hello! I tried latest two versions of ASIO4ALL (2.8 and 2.9b1) on the fresh IBM/Lenovo Thinkpad T61 with WinXP pro SP3. Onboard codec is High Definition Audio AD1984HD. Latency is greatly ;D reduced with soft synths Truepianos and PianoTeq - so BIG THANKS FOR THAT! (settings - sample rate:96000, Kernel Buffers:4, ASIO Buffer size:384, latency compensation:0 seem to work without noticable dropouts and with very small latency) Also Native Instruments Traktor 3 seems to work (although the sound is a bit choppy-jumpy, might not found best settings yet, might also not be related to ASIO4ALL...)    BUT I have NO SUCCESS in running NI's Guitar Rig 3. Whenever I select ASIO4ALL driver all I get is noise and only loud mic/guitar input gets through somehow, but greatly distorted (not by GR3's effects)... If i select DIRECT SOUND driver GR3 sound perfectly, but latency is a big issue - guitar unplayable. The noise that I get when choosing ASIO4ALL seems like the bytes or bits from the codec might be messed up - reversed HSBs and LSBs or something like that... T61 has high definition audio codec AD1984HD www.analog.com/en/audiovideo-products/audio-codecs/ad1984b/products/product.htmlWhen I select HARDWARE BUFFER, the noise disappears, but the latency is BIG (around one second!) and the loud "crackles" are heard in identical intervals - around 5x per second at 48kHz sampling rate and faster at 96kHz. Please help...  Anyone had success in running GR3 with Lenovo T61? Best Regards! |
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Post by Kamac on Aug 11, 2008 12:36:02 GMT
Hello Michael!
I just tried 2.9beta2 and see no difference. In GR3 still just noise (at input that is. As I said output seems to work OK).
Should there be any improvement in 2.9b2 for AD1984HD @ Thinkpad T61?
I couldn't find the new checkbox you mentioned in the release notes of 2.9beta2:
"There is a new checkbox now where you have to explicitely allow event mode"
Regards!
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Post by Michael Tippach on Aug 11, 2008 22:46:02 GMT
Hello Michael! I just tried 2.9beta2 and see no difference. In GR3 still just noise (at input that is. As I said output seems to work OK). Should there be any improvement in 2.9b2 for AD1984HD @ Thinkpad T61? I couldn't find the new checkbox you mentioned in the release notes of 2.9beta2: "There is a new checkbox now where you have to explicitely allow event mode" The checkbox is only visible for WaveRT drivers. Since you are running XP (not Vista) you won't ever see it. Could you please try a sample rate different from 96k - like 48k? HD audio drivers have been known to act in funny ways under XP when running at anything other than 48k. Otherwise, do you think you could create a short (2..3) second mp3 of the noise and either post it here or send it to me (feedback@asio4all.com)? -Mike |
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Post by mrrman on Sept 2, 2008 1:58:33 GMT
I am having the same issue using GR3 and PRS GTR3, no sound yet
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Post by Michael Tippach on Sept 16, 2008 0:48:33 GMT
I am having the same issue using GR3 and PRS GTR3, no sound yet This more and more looks like an issue with the T61/AD1984 itself and I would definitely call Lenovo about that - provided they still care, like IBM did care somewhat, back in the days... Since there's more than one report regarding this particular machine, I now have a theory of what's happening and why. Since all I've got so far to work with is observation by third party, you could as well call this "opinion", which I'm more comfortable with for a variety of reasons, but here we go: Under XP, there is a 10 - 20 ms noise burst whenever a new buffer is submitted to the WDM driver. If you select "Hardware Buffer" in ASIO4ALL, you will hear this noise burst every couple hundred milliseconds, because this is the size of one buffer in this mode. Otherwise, the buffer size is equivalent to the ASIO buffer size, which is likely to be considerably below 20 ms - hence all you hear is noise! Under XP, MME/DirectSound, use a single circular buffer, which would explain why the issue seems not present here. It gets interesting if you compare this with the results under Vista, where the WDM driver is a different one and only the actual hardware is the same: Noise will be there all the time with ASIO4ALL and also with MME/DirectSound if you disable sound enhancements. Now, the difference between XP and Vista is, that in XP it was possible to implement APOs (Audio Processing Objects) in kernel space, whereas in Vista they would have to be in user space (and hence completely bypassed by ASIO4ALL.) And here comes the highly speculative part (strictly "opinion"!): APO = software noise gate!(in this case, with a look ahead time of about 10-20 ms, in order to cover up the horrible electrical specs of the input circuit) I'm sure that I'm totally wrong with this speculation since Think Pad is a respectable brand and you paid good money for that extra in quality. Hence I'm sure that Lenovo support will give you a totally different explanation, covering all the observations made by different people - and which does not involve the implementation of dodgy software hacks (like noise gates.) It may be something as simple as the Automatic Gain Control running berzerk, but we'll never know unless someone actually asks them and reports back here with the findings. -Mike (proud owner of an X40) |
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vdo
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Post by vdo on Sept 24, 2008 18:50:42 GMT
I have the same symptoms with my T61 running on XP in 48khz....
But once in a while audio works well under cubase without hardware buffers enabled. Sadly haven't worked out why or when...
Is there any 'asio4all debug mode' I could enable to track it down?
regards
-ingo
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Post by jyrgen on Oct 15, 2008 10:03:57 GMT
I can confirm the error Kamac described on a Lenovo R61 with ableton live as host.
After i updated the audio driver to Version 5520 (download from Lenovo),
the constant noise was gone, but now there are fairly periodical
dropouts even during playback !
Apparently the audio driver is still hassling around with ASIO.
It all works nicely with the DirectX / WDM driver but with a way higher
latency.
I have contacted Lenovo on this issue, as soon as i get a reply... i will
post it here.
cheers, jyrgen
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Post by Rodrigo on Oct 17, 2008 14:27:46 GMT
I have a lenovo X61 Tablet and I got the same problem. But if you open SoundMax's control panel and choose "No Filtering" for the microphone, the noise disappears. However, the sound deteriorates. Please, if someone finds a better solution, post here.
Thanks!
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Post by Rodrigo on Oct 17, 2008 14:37:41 GMT
Hey!! That's the fix!! I thought the sound was too crapy after choosing "No Filtering", but actually it was saturated because my microphone input level was too high. Adjust it and get a clean sound with low latency!
Hope that helps
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fizzl
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Post by fizzl on Feb 21, 2010 20:52:54 GMT
I have a lenovo X61 Tablet and I got the same problem. But if you open SoundMax's control panel and choose "No Filtering" for the microphone, the noise disappears. However, the sound deteriorates. Please, if someone finds a better solution, post here. Thanks! I registered to these boards just to say a big THANK YOU! Man, I spent three hours trying different driver versions and poking around with all asio settings I could think of. This solved the problem perfectly. In FL Studio just a nudge of the noise gates makes my 5€ head set recordings almost as good as my FCA202 with T.bones  |
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Post by thedancingcamel on Dec 23, 2010 12:42:21 GMT
I registered to these boards just to say a big THANK YOU!
Man, I spent three hours trying different driver versions and poking around with all asio settings I could think of. This solved the problem perfectly. In FL Studio just a nudge of the noise gates makes my 5€ head set recordings almost as good as my FCA202 with T.bones
I also just registered to say thanks! I've known that the onbaord hardware on my T61 is fine, because live input works great when I boot into OSX. I was only having this problem with Windows 7. So I knew that this was a software/driver problem. O.k., I also registered for another reason  fizzlYou mentioned the FCA202 (firewire version). Are you using it with a ThinkPad, and how does it work for you? I have been using the FCA202 with my T61 with both OSX and Windows 7 for processing live input from my guitar, but I can't avoid getting dropouts and clicks. It is so annoying that I often just use the onboard mic and headphones jacks instead, which has been working great under OSX, and hopefully will work fine in Windows 7 after changing the setting mentioned here. The latency with the onboard interface is not quite as good as with the FCA202, but it is still very good in my opinion. I just have to keep the volume knobs on my guitar almost completely off or I get distoration from the onboard mic. So for now, the FCA202 is basically less useful than the onboard interface, unless I can find a way to avoid the clicks. Af first I thought it had to do with running OSX off of an external USB hard drive (USB/Firewire issue), but I also tried it with Windows 7 that is running off of the internal hard drive, and they both suffer from the exact same problem (if anything, there were fewer clicks when using OSX on the external hard drive). |
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