We used to call this sort of compensation "Loudness" and it was found on most receivers. It looks like that term has been occulted by "Loudness war" and the like and it is not so common on equipment anymore. Just dial up the bass a little when you lower the volume and you should be good.
PS Or has anyone got the raw data, so that I could calculate EQ presets myself?
Quote from: googlebot on 11 September, 2010, 07:23:40 AMPS Or has anyone got the raw data, so that I could calculate EQ presets myself?http://www.mathworks.com/matlabcentral/fileexchange/7028Plug-in for which software? Foobar? In any case, I don't know of any such plug-in, but it sounds like a nice project to do Chris
A 30dB loudness correction seems to imply EQing of over 16dB for some frequencies. Can that be correct?
Maybe I'm misreading the original post, but I thought he was referring to the change in perceived bass when he turns his volume control up and down, not when the musical piece gets louder and softer?
From what I remember its effect became less pronounced and cut off at a certain point the more you turned up the volume . I do remember this though...It added high as well as low frequencies...
Quote from: jimmanningjr on 12 September, 2010, 02:25:49 PMFrom what I remember its effect became less pronounced and cut off at a certain point the more you turned up the volume . I do remember this though...It added high as well as low frequencies...That was fairly common practice for the era, I believe. I've had several amplifiers dating from the mid 70s onward with loudness controls that have behaved exactly as you describe.
Why did they stop making the "Loudness Button"? its nice to have if you also use your system for low level listening...
…when you note that the curves vary with sound pressure.
…has anyone got the raw data, so that I could calculate EQ presets myself?
This is probably the single most important reason I've chosen Yamaha receivers for my 2.0 and 2.1 systems. They have a variable loudness contour.
What do you guys think would be the best reference curve?
What's a typical SPL of a rather loud but still comfortable listening session?
…at your highest reference signal level…
…I'm not convinced that a particularly high level of precision is required in practice.
Matlab…A 30dB loudness correction seems to imply EQing of over 16dB for some frequencies. Can that be correct?
…have a look at the earlier posts in the thread, most of what you advice has actually already been cleared up.
ref: reference SPLtgt: target SPL
If anyone still sees a problem with the above...
…the volume control would modify a set of equalizer parameters or choose corresponding convolution presets would be nice…