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About STC

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  1. Sorry for the delay. After listening with my main system to the 55 sec snippets of Orange Coloured Sky. My observation as follows:- 1) the vocal sound natural compared to the RAW sample. 2) I did sense a bigger stage but less depth with the RAW. But slightly narrow stage but better depth with the decoded. It only happened at the first few listening and now I am unable to distinguish them easily under blindtests because once you know the existence of something it is hard to unhear them. 3) At some segments where the is burst of energy, I preferred the RAW version. It is something like listening to soft clipping of tube amp. Having said that, you can always use compression and EQ to produce better sound using the Decoded version. So it may be possible to make a very good remasters of ABBA with your decoded files. 4) Please listen to the sample again from 45 to 48 seconds. There is a marked difference between the RAW and Decoded. Again this can be easily addressed with EQ. IN my system, the decoded version pushes the hit hat buried in the background. I suspect the RAW version did more than removing the hiss with DOLBYA. ABBA never sounded good to me with CD, I enjoyed them more during my cassette era. After hearing the vocals of the decoded sound I would reconsider getting some of my favorites again if at all you decided to commercialize them. Thanks for sharing the files.
  2. If I were you, I wouldn’t pay much attention to the Youtube. It sounds to me like originated from a digital source which most likely gone through Dolby process during the mastering stage from the original master tape.
  3. Thanks. I missed his write up on the Polk.
  4. The sound quality does not affect the encoded information to determine the depth or width. The noise floor and masking or loss of HF can affect the depth perception but depth perception is relative and based on overall comparisons between other instruments in the recording. This is not precise as you cannot really have an uniform ambiance recorded unless you use a single microphone to capture the performance. Even then it is still subjective. I have no problem getting this YouTube correct with a $20 Sennheiser earphones. Interestingly, even some people in the industry couldn't. My response is the comments box in the YT.
  5. Of course, I will always go for perfection. Thank you for the detailed explanation. Regards, ST
  6. And there is no stereo in live performance like this.
  7. And here are two more samples with XLO reference and generic interconnects.
  8. I am with you on this one. Speaking of your decoded files which differences can be heard with headphones may be less important to people like me listening over the loudspeakers. Firstly, an ideal loudspeakers setup should have a descending slope frequency response at LP. That’s because HF attenuated much quicker over the distance due to air damping. Unfortunately, this also raises another question in room EQ where they try hard to have it as flatten freq response. At ears, the pinna function amplifies the HF as much as 20dB so even a different of 0.3dB at 3 meter can be one or two dB difference to the brain. I generally believe most high end loudspeakers carry far more HF energy than what your experience in live unamplified performance. Higher bass and treble often perceived to be better and a great marketing trick. Going back to your OCS, what you perceive as distortion of HF may actually sound better over the loudspeakers. Engineers look at the signal from different perspective, they try to maintain the fidelity from mic to the output at speakers. Unfortunately, a mic ( assuming a stereo ) maintains the separation from the moment they capture the sound wave, to the media and playback until the speakers they are clearly separated. During playback over loudspeaker this separation are now mixed as one received by the two ears inside the brain which is entirely different on how the original signal was captured, stored and played back. You mix a positive and a negative phase during this stage you get a null but if you output them to the ears you hear them loud and clear. Human hearing is not processed like audio signal in audio equipment.
  9. Guilty as accused. Never checked the impedance as I do not use them at high level nor for serious listening. Headphones or ear buds are unnatural to me and never developed a liking to it. 😬
  10. Spoke too soon. May not work for all. From Sony “ We do not warrant that all listeners can enjoy the same degrees of spatial sound effects.” But looks like binaural loudspeakers is a possibility. https://www.sony.com.my/electronics/360-reality-audio
  11. Thank you Sony for making this possible. https://www.engadget.com/2019/09/06/sony-360-reality-audio-headphone-calibration-hands-on/
  12. Here are 2 original tracks. Do you hear any difference with loudspeakers? Do these two tracks sound identical? Listen again with headphones do you hear the female's voice is on the left in A1 and on the right in track A2. Why is this information can only be heard with headphones and not with loudspeakers? A1.wav A2.wav Now listen again to the same track with loudspeakers? Do you hear clear separation and different position between the male and female singer? B1.wav B2.wav
  13. I know I am casually and carelessly using soundstage word. I am more concern with the accuracy of the sound as perceived naturally.
  14. I was using the AKG which was $1000 in late 2000. It developed some distortion in one speaker and send it to repairs, in meantime I bought HD681F which measures exactly like one pro AKG headphones. Unfortunately they no longer produce the the F version and makes no reference in their website. I have seen the measurements but for some strange reasons ( probably IP related issues ) it is no longer available. I am am not a headphones listener. If I ever going to buy a proper headphones that’s going to be the Smyth Realizer.
  15. We are on different wavelength. I generally enjoy music irrespective of the source or quality. However, when I listen for accuracy then I will be looking for slightest flaws. Having said that, if I need side by side files for comparisons then I usually ignore them unless there is something else in them interest me.
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