HiFi that exceeds reality

July 23, 2022
 by Paul McGowan

9 comments on “HiFi that exceeds reality”

  1. There are most expensive and nearbperfect microphones and drivers out there. However the biggest and yet unsolved problem is to get these different drivers of a multi-way loudspeaker with a passive crossover playing coherently without phase shifts and peaks&dips in frequency response. And even if you could design a near perfect loudspeaker you finally have to tame unwanted room acoustic effects and to cancel inter-speaker crosstalk.

    1. I would argue that while highly desirable flat frequency response is not fundamental to sounding live. Just take two different seats in a live concert(non amplified, of course) and both seats are obviously live but the frequency response at the two seats will differ. My suspicion is that dynamic linearity(at all levels from micro to macro) is the largest contributor to sounding live and simply take notice of how often Paul talks about dynamics.

      1. If you want to reproduce the recorded instruments most correctly you have to require that all overtones of each tone are exactly (!) reproduced – the series of overtones determine the timbre of an instrument. Thus flat frequency response is a must. Flat frequency response in an anechoic chamber of course and not a more or less strange in-listening room frequency response. Furthermore we identify an instrument also by its characteristic settling time. Thus a mandatory requirement is a near perfect step response for getting the steepest transients correctly reproduced!

  2. It seems liken I remember Bob Carver describing the sheer amount of system reserves required to capture and amplify the ship if a pair of scissors.
    Bob used to wander into the showroom at Magnolia Hi-Fi back in the day, and share ideas with the sales people. never a dull moment with reps, manufacturers, and celebrities that dropped in.

    1. If I remember properly, 12 , 200 watt amps and the scope still showed clipping. That is why my last power amp was a Carver M-1.5t. it served me well for 35 years.

  3. I understand what you say is correct about the inability to get more reality out of a recording, but the question reminds me of what I see often in HD and UHD TVs. They can show much sharper edges on things than I can ever see in reality. I’m not sure why, because if you look closely, you’ll see that there is no actual excessive detail in the surface of say a leaf or a textured surface, while when stepping back, the picture shows a stunning number of leaves that it takes HD to present. Yet there is that over sharpness to the picture. It sure sells TVs, though.

    1. If you all have been taking notice of how quickly computer tech is changing, look around, and you’ll find that the same thing is also true about speaker microphone and amplifier tech too.
      It’s a matter of fact, it’s all changing equally at the same time and rate.
      One of these days, there will be microphones and speakers that will deliver the sound to your ears, exactly the same way you’re hearing it.
      But be warned, that tech isn’t going to be cheep either.
      It will bee crazy expensive.

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