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ravi1stop

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  1. The test does not include any effect from the room. The signal path is a direct connection between the playing PC via the Dac to the Digirack and into the 2nd Pc which records the signal. I have compared analog vs digital as well. I initially started using a microphone but quickly discarded it for the reasons you point out. Thanks
  2. It is listed at the top of the charts on each post.
  3. Sorry for not explaining my process better. The original file was made up of extracts from 4 Wav audio files compiled together in Wav lab. This wav file was then played on all the different players. The output from the PC/Mac be it via the Halide bridge directly into the Digi rack or fire wire through the Weiss dac into Spdif input of the Digirack and or the XLR analog input of the Digi rack was fed into Pro Tools and recorded as a stereo interleaved Wav file. The potential variations in the process of going through the Digirack and through protools should be common to all players and in many cases is almost identical to the original file, so I think the process was relatively repeatable and consistent. Thanks
  4. It is a good idea to test Itunes. I will try and do that this weekend. The Weiss tests indicated very little difference between the Weiss and using the Halide bridge but there may be bigger differences between other Dacs. When I have time I will compare it to the Wyred4 sound dac. Thanks
  5. Please do not take my work as gospel as yet as I am learning as I go and am talking with the folks at Audirvana to ensure that some setting in my system is not causing this difference. I want to make it clear that I am not saying that Audirvana is not bit perfect, just that my testing so far shows some inconsistencies that I cannot as yet explain and is hopefully some setting that I am missing. Ravi
  6. Hi Mitch, Very interesting way of essentially doing what I am attempting to do but with sound rather than charts. I am not familiar with Audio diffmaker but could i use it to compare the different recordings to the original? Ravi
  7. Actually the tests on Media center and Foobar were performed using Asio. I did one test going direct and the charts show very little difference between them.
  8. I have for some time been using a PC with Media center and Foobar 2000 as my source for audio. Recently I acquired a Mac and tested a number of software programs. During this process I became quite intrigued with finding an objective way of determining if there was any differences in the audio generated by these players or if the perceived differences were more placebo effects. I designed a test to make this as objective as possible and found there to be quite noticeable differences. There are quite a few charts involved that cannot be included in this forum but the results can be seen on a blog I created to research this subject further.Visit Audioignite high end audio blog for details. I am very interested in hearing if others have conducted similar tests.
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