This is something I have though about a long time now – finding a method to reliably verify sound quality differences in power amplifiers.
Finally I have set up the necessary instrumentation to try out the method in practical experiments.
Would it not be great if you could bring back the lost bass in you favorite movies?
Well, perhaps you can.
By applying equalization customized for each movie during playback, it is possible to dig out some of the low bass lost due to filtering and processing in the studio.
Measuring more than one speaker and getting predictable and usable results can be challenging.
Using pink noise and a real-time analyzer makes it easy to check level and frequency response, and you can move the mic around to measure at different locations and still get meaningful observations.
Peak limiting and clipping is used to make music seem louder, but does it really work that way?
No – removing the peaks actually reduces impact and brutality and makes it sound flat and boring.
Phase distortion at low frequencies causes audible degradation of music.
When is it audible, what causes it and how does it affect sound quality.
Floor reflection fixed with two small additions to interior decoration
Puff ready for some music
When measuring speakers I have used cardboxes, carpets and such in front of speakers to dampen the first floor reflection.
Useful both for indoor and outdoor measurements, this proves to at least have some effect on the reflection, improving measurement accuracy in a quick set-up.
Now, could a similar approach be used in an ordinary room, and actually look nice and appear as a natural extension of the interior design.
So, how loud is it.
What kind of sound level exposure is to be expected, and what sound pressure level should be used for system requirements.