Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Is this a valid test to see if my ears will hear benifits of Apodizing Upsample?

I don't have HD621 so will use a video analogy. Based on this, I believe the test is flawed.

I only have Freeview TV, currently SD in this household. However, much of the programming has originated in HD. Whilst the transmission nitrates remain unchanged or have degraded as more channels are squeezed into a multiplex, it has been easy to spot when programs have started to be made in HD. Even though I am watching in SD, the HD originated program is better quality.

I believe that the same may be true for your test. Starting with an HD source and creating SD from it will produce something closer to the HD than an original SD source, which in the case of Meridian audio into DSPs will have been bit extended and dithered).

This difference will he heard by different people in different ways but for those of us whose hearing is not so good, I believe that the difference between 96-48/88-44 will le less audible than 44-88/48-96 + special sauce so just because you can't hear downsampling of hires material doesn't mean that you won't hear upsampling/apodising of CD material.

I think if you can't hear difference of HD621 then you should just concede that your hearing is shot and sell your M kit and buy a �300 Yamaha box instead