Couple off hand:
You can find plenty more in 10 minutes...
The first link is a strange citation by you given the rest of your quote below:
First quickly addressing your point, localization is an orthogonal (independent) characteristics from intelligibility. As such, it is addressed separately by Dr. Toole and researchers in general. See this table for example from Dr. Tool’s paper:
So not sure why you mix the notion of direction and location of speech with whether we understand it.
More curious is the citation of that paper as I mentioned. You say the problem with Dr. Toole’s paper is that he only focuses on speech (he doesn’t really but let’s run with it for now). And that he is ignoring everything below a “few hundred hertz” and above 5-6 Khz. Here is the experiment conditions for the paper you cited:
” C. Stimuli
Experiment 1 separately presented either low-frequency noise (termed “Lo,” centered at 750 Hz) or high-frequency noise (termed “Hi,” centered at 6 kHz), which were created by band-pass ﬁltering tokens of broadband pink noise. The ﬁlters had 3-dB down points at 500 Hz and 1 kHz for the Lo noise and 4 and 8 kHz for the Hi noise (24 dB/octave frequency roll-off). Experiment 2 presented the Lo and Hi noises simultaneously, with the Lo and Hi components gated on and off together.”
[Bolding mine.] They go on to then determine whether in listening tests people can tell the angle of such noises. How is it that you say speech analysis is not of value but noise tests with similar frequency ranges as you stated is??? While you think about that, here is the conclusions from the first experiment they ran:
”Overall, listeners’ responses were less accurate for more lateral sources than for sources closer to the median plane (responses tend to fall farther from the gray lines, denoting the simulated source angles, in panels F and G than in panels A–E). For sources at 0 degree azimuth, responses were generally close to 0 degree [Fig. 1(A)]. Responses for sources at 15 degree, 30 degree, and 45 degree azimuth were laterally biased [in Figs. 1(B)–1(D), responses fall outside the gray lines].”
Translating in English, we are able to tell the direction of sounds that are directly in front of us better than when they move to either side. Dr. Toole states the same thing in his Book, Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms: http://www.amazon.com/Sound-Reproduction-Acoustics-Psychoacoustics-Loudspeakers/dp/0240520092/ref=sr_1_1?s=books&ie=UTF8&qid=1358617723&sr=1-1&keywords=floyd+toole
”Direction: Identifying the direction from which sound appears to be coming. Because of the ear locations, we are much better at localizing in azimuth than we are in elevation, and we are more precise close to the median plane (a vertical forward/back plane running through the head) than we are to the sides.”
So as you see, it is hard to connect your objections to the citations you keep providing. Would you please come back with the quote on the second paper and in the future explain as I have done above where the disagreement lies? If you are just googling and have not read the references, then please don't give them to us this way. It takes time to do the analysis I just did and we could be spending it more productively .
As to not worrying about low frequencies in Dr. Toole’s paper, surely you must be kidding. He has an entire section dedicated to it ("7, “ONE ROOM, TWO SOUND FIELDS.). As we get down to 400 Hz or so, the acoustic model in the room starts to change. We move from a situation where reflections and psychacosutics rule to modal behavior. So yes, you most definitely want to ignore what happens below “a few hundred hertz” when we deal with psychoacoustics effects. The wavelengths become large enough such that the distance between your ears no longer matters, and HRTF goes out the window. It makes no sense to say these topics should be talked about in the same sentence. If these are new concepts, then it would easily explain why you are having trouble with his teachings.
I will address the rest of your post in another reply later.