Originally Posted by glangford
Neither, I looked into it though when they came out with it. I had already just purchased an Anthem MRX-520. I use the same feature on the anthem (Dolby Volume), and I had a Denon and I used Dynamic EQ.
From the Yamaha Manual:
VOL (YPAO Volume)
Enables/disables the YPAO volume function. When the YPAO Volume function is enabled, the high- and low- frequency levels are automatically adjusted according to the volume so that you can enjoy natural sounds even at low volume.
Loudness Control: Retain a full tonal range at any volume level, thus compensating for the human ears’ loss of sensitivity to high and low-frequency ranges at low volume.
This is the same function, so it's natural the Yamaha would disable loudness control with YPAO volume where implemented.
Thank you for elaborating. Although I'm intimately familiar with the psychoacoustic principals at play and various schemes to address them over the years, since I no longer regularly attend technical seminars designed for dealers when these various technologies are released from vendors which one carries, I had to do a little research, just now, to get the jargon (lingo) down.
YPAO and YPAO Volume are not the same thing and it would really annoy me that by my read of the owner's manual Torakusu does not allow their spectacularly well designed variable loudness knob [I've highly praised in previous posts
] to function if YPAO is used. Bummer.
Sure, I totally get what you are saying that it would by redundant however it is redundant to YPAO Volume
, not YPAO itself.
I had given Torakusu a pass that this knob didn't work, in fact wasn't even included, on their 5.1 and up receivers because it is much harder to implement correctly, but we're talking about a 2ch product here. Plus their bass and treble knobs still work while YPAO is on so the signal is still
passing through the manual tone control circuitry. No excuse, Torakusu!
What a lot of people don't get is that the Fletcher-Munson curves are averages
of many people lumped together for a given exposure level of fixed tones. It is a one-size fits all approach which may be better than nothing but you know what trumps it? Giving each user an infinitely variable control accessed via an easy to finely adjust rotary knob. This approach blows away
these "idiot light" methods of "Do you want group-averaged equal loudness curve compensation on or off?" which on top of being averages of several humans also makes some pretty crude assumptions about the level coming in. NOT ALL CDs ARE RECORDED AT THE SAME LEVEL. Audyssey at least throws in one extra step of letting the user select a 10 dB, IIRC, inflection point selection for their analogous Dynamic EQ control, but I find that still doesn't cut it.
What does work 100% of the time? An infinitely variable knob you rotate to taste, by ear, on the fly, per recording.
P.S. When looking up Mr. Yamaha's first name I learned his dad was a real deal Samurai warrior. Cool.