Floyd Toole: Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms (AES Presents) 3rd Edition - Discussion Thread

[3dbinCanada]

We are all guilty.

We are all guilty because we are all human. Judging is the human thing and our judgements are made from all of our sensory input.

 

[3dbinCanada]

Nicely put. The bits that your brain has to work with are really crap - nothing like "the eye is a camera" nonsense. All perception is creative construction. In that sense, Toole means that the brain tries to subtract the room in order to determine what the signal is, human or loudspeaker. Sometimes easy or not. Goal of acoustic treatment might be to make it easy. Likewise, good spinorama performance makes it easy. (But the alternative that I'd call "directivity-by-design" (as in Geddes speakers) may not?)

So with treble EQ, I think Toole would say what you are hearing is like you are changing the source and the source is almost inextricably a mingling of speaker and recording and just makes the Circle of Confusion worse.

natty is right to say bass is different. Perhaps humans in rooms don't have the cues to make bass veridical, a favourite psychology term of mine. I'm not sure if there is a conceptual difference between the improvement due to multi-subs compared to DSP EQ.

I think that the brain process is doing an autocorrelation process where it samples the audio input, keeps the original signal and throws out the effects of the changes.

 

[3dbinCanada]

It does as evidenced by experience in both my systems.

I think multiple sub placement starts to minimize the effect of the room on the bass response. EQing it via something like a MiniDSP helps to taylor the response at the listener position to the listener's preference. I noticed that when I added a 3rd sub to my great room system, the bass response was more linear (even in response) as I walked to different parts of the room. The listening area grew larger in the even bass response.

 

[3dbinCanada]

Yes, someone else make reference to his references. Look at the footnotes. He seems to bring the best of it all together in one place. Imagine now going and reading all of those references.

I could barely get through the book in one read. There were a few chapters where I ahd to reread it a few time to catch on to what he was saying. There is no way in ... well you know/// that I'm gonna follow up on all these references .

 

[JStewart]

I could barely get through the book in one read. There were a few chapters where I ahd to reread it a few time to catch on to what he was saying. There is no way in ... well you know/// that I'm gonna follow up on all these references .

Same here and I’ve been thinking it’s time for another read through, so this new edition will be welcome.

I also read there will be a companion website with the book. I didn’t read anything about the content, but can imagine great possibilities!

 

[AJ Soundfield]

The Lazarus of threads

 

[Sonnie Parker]

We like revivals... or better stated, gospel meetings.

 

[AJ Soundfield]

Same here and I’ve been thinking it’s time for another read through, so this new edition will be welcome.

I also read there will be a companion website with the book. I didn’t read anything about the content, but can imagine great possibilities!

A wise man will also read what JJ posts https://www.audiosciencereview.com/...reo-bass-with-easyeffects.61716/#post-2313628

 

[JStewart]

A wise man will also read what JJ posts https://www.audiosciencereview.com/...reo-bass-with-easyeffects.61716/#post-2313628

I do! I just wish I was capable of understanding more of it!