A new interview from Rob Watts in four parts, check it out...

The latency would become too excessive after a few million taps at 768kHz for a LP filter. It is probably for DSD only that runs at MHz speed. Have you tried it?

Forgot Rob's recent reply to you? But the real interesting stuff is when you take a sinc function and try to meld it to suit the real life requirements of limited processing - or getting more sonic improvements from finite resources. Then it becomes very interesting indeed, with lots of careful...

I have had the 4 for more than 2 years now, I have only demoed the 4z briefly. I didn't think there was a big difference either, for me it was more in the sound stage, the 4 is more 3D/holographic. You need to find something that works for you what ever that may be, some things just click and...

I just watched meta571's latest Q&A #12, he currently has the 4, 4z, and 24. He said his fave of all headphones he has ever heard is the 4 (eq'd) and that he probably won't do a review of the 4z or 24 as he doesn't like them. I had a 2014 LCD3F which was magical and the drivers were changed in...

That 1% for headphones just happens to be some of the best headphones in the world. For speakers it probably can't drive 99% of them. That is a pity because for a top class system you will probably need an amp. The TT2 as good as it may be is not in the same league. "Dave DX" could combine the...

The article below has a bit of an explanation and has a diagram showing the structures. There is only 60 grams difference between the 4z and the 24 which is a more fair comparison since only the magnets differ(?). Interesting also, the 4z is more sensitive than the 24 (98 to 96dB/mW) but the 24...

The music video is pretty funny actually (obviously need a flac album version though).

Homework album, this track...

Da Funk by Daft Punk, the bass in this song is so powerful on the LCD4 yet so clean and controlled. It amazes me every time I listen how it can possibly do this without self destructing.

An excellent presentation by Rob, I watch them all but somehow I missed this one. Also, this is very interesting about hearing and correlates with what Rob has been saying.

It's not a software problem though, it is still the hardware. FPGA is designed for this stuff and is fast enough. Whereas a PC is designed to run Windows and spy on you. If a PC was fast enough it could do the exact same thing. One day a phone may be fast enough and there will be an app for this...

The example I gave was to show how it works, it wasn't in relation to the software discussion beforehand. Yes, obviously truncation must happen and window applied etc. For sinc interpolation, the longer the better though. No idea how long it would take, but I think it would be minutes per song...

The slowness in the KH example is due to the on the fly calculation of sin(x)/x (the sinc coefficients). You can pre calculate these and store them.

This diagram might help to understand sinc interpolation. Figure 1 shows what a sinc function looks like. It can be calculated from the formula shown. Note that the peak value equals 1 and it continues to plus and minus infinity time and never completely decays to zero. It is scaled so that the...