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  1. K

    ANother violin testt

    I've done the Telegraph test too and IMO it has nothing to do with the original test. First of all they should have used a competent violinist. Even an average music student would do better. Then the recording is technically mediocre at best. Stereo image isn't stable and the three versions...
  2. K

    Organ and choir recordings in analog IEC 15ips tape format

    Hej Erik, nice to see you here. Erik and I were classmates (rec.eng.) in the early 80's when splicing analog tape was the only way to edit. I still have my BASF antimagnetic scissors, but hope to never use them again. Digital editing is incomparably more sophisticated (and non destructive)...
  3. K

    Beethoven: Sonata in G Major

    More info in the liner notes:
  4. K

    Redbook 44.1 kHz standard: theoretically sufficient timbral resolution?

    FYI Bruno is no longer with Grimm Audio and he is no longer with DSD. Luckily he is still into audio though :)
  5. K

    Anyone heard about Meridian's new project called MQA

    Attempts to improve ADC filters was already done in 1986 by Apogee. These could be installed in several multitrack recorder brands. To me it makes sense to apply the correction as early as possible in the chain. Especially in modern music production where many (different) ADC signals (and even...
  6. K

    DXD versus DSD

    FLAC gives me an average compression ratio of about 0.65 with DXD files. Besides the data reduction there's the advantage of checksum verification.
  7. K

    Bach: Goldberg Variations - 9 versions (quick notes)

    I hope you will enjoy listening to this version as much as we did recording it !
  8. K

    Bach: Goldberg Variations - 9 versions (quick notes)

    There's a refreshing version for string orchestra by Sitkovetsky, an adaptation of his own trio version. (amazon). A version with video by Barenboim, here on youtube or amazon.
  9. K

    Sergiu Celibidache on his philosophy of music

    Thanks for posting, but . . . do you really understand anything of what he's trying to say ? I don't :)
  10. K

    Conclusive "Proof" that higher resolution audio sounds different

    The interesting thing is that iZotope SRC artifacts are below -150dBFS in the (<21kHz) passband. This should not be audible, unless the monitoring adds audible distortion, or unless you can hear above 21 kHz.
  11. K

    Conclusive "Proof" that higher resolution audio sounds different

    Have you tried the iZotope SRC only, without reducing the wordlength to 16 bit ? I've found iZotope SRC to be transparent below 21kHz. Dither is another story.
  12. K

    Conclusive "Proof" that higher resolution audio sounds different

    The new audio tool RX4 from iZotope just came out. One of its new features is that its SRC no longer produces subsample delay in the output. This has no sonic advantages but it allows to use a null test to demonstrate the accuracy of the process. Default settings result in a difference signal...
  13. K

    Conclusive "Proof" that higher resolution audio sounds different

    Amir, I'm downloading the files right now and will give it a try. Do you have any idea about the spl you were monitoring at ? IME this is crucial for audibility of low level noise. Everyone has a hearing threshold :)
  14. K

    "Fast" and "slow" subwoofers: can we put them to bed?

    I'm not aware of any "formal" definition of fast bass. The fastest (double) bass I've ever heard (attack/decay) was during open air concerts. Absence of reverberation helps. A slow bass could be something like this: (is there a way to resize images?)
  15. K

    "Fast" and "slow" subwoofers: can we put them to bed?

    I guess a slow hole doesn't do much harm if you have a fast bass ;-)
  16. K

    Conclusive "Proof" that higher resolution audio sounds different

    Are you referring to Convention Paper 9174 by Meridian? Luckily they tested filter and wordlength/dither aspects separately. I hope they found a few well trained listeners. Looks interesting.
  17. K

    Conclusive "Proof" that higher resolution audio sounds different

    IMO you're a bit hard on Sonic. AFAIK the gain reduction is a leftover from the days that Sonic used fixed point processing. Any clipping in the process would be permanent, unlike floating point. I don't know if Sonic is still using fixed point though. Even the highly respected Weiss Saracon SRC...
  18. K

    Conclusive "Proof" that higher resolution audio sounds different

    Like you I always believed that higher fidelity systems allow better discrimination of artifacts, until I learned from lossy audio experts that unmasking is an important aspect of revealing artifacts. Some not so good or even broken systems might do a better job at unmasking than high fidelity...
  19. K

    Conclusive "Proof" that higher resolution audio sounds different

    Thank you! This looks like an interesting forum and I'm looking forward to learning and sharing :)
  20. K

    Conclusive "Proof" that higher resolution audio sounds different

    There are several level differences, so I'm not quite sure which ones you mean and I have trouble finding anything in the huge AVS thread :) AFAIK the 0.2 dB level difference was between the original 3 AVS music samples, caused by the specific (Sonic Studio) SRC. This only concerns level...
  21. K

    Conclusive "Proof" that higher resolution audio sounds different

    Amir, afaik the 4kHz tone is at -30dBFS peak and -33dB RMS level. If you go nearly deaf, doesn't that indicate that your monitoring level is rather high? Have you verified that your chain is not adding audible distortion at that level? When I did an ABX on my MacBook with cheap headphones I...

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