Bauhaus-Universität Weimar

32 
M. Matsumoto, 
Taule XIV. 
Case I. 
Distance of 
the second ary 
Usual 
localization. 
Occasional localization. 
coil for the 
left telephone. 
Direction. 
Distance. 
Direction. 
Distance. 
12c,n 
br 50° 
9™" (27e’'*) 
II 
fr 35 
9 (27) 
hr 500 
S»uu 
(24cm) 
IO 
hr 43-3 
8 (24) 
9 
fr 35 
9 (27) 
fr or hr 35 
9 
(27) 
8 
fr 30 
9 (27) 
hr 30 
8 
(24) 
7 
/or b 
8.7 (26) 
6 
ß 20 
9 (27) 
hi 3° 
7 
(21) 
5 
fl 43-3 
6.S (20) 
4 
ß 45 
5-5 (16) 
hi 3° 
5 
(15) 
3 
ß 45 
5-5 (16) 
Jl or bl 50 
5 
(15) 
2 
ß 43-3 
4-2 (13) 
m 
I 
ß 45 
4-5 (13) 
ß or bl 50 
3-5 
(IO) 
The number of experiments 
on each point is 3. 
In Case I the probable error for direction varies 
from 0 to rr 65% and that for distance 
from 0 to ± 28%. 
Case II. 
Distanceof the 
secondary coil 
Usual localization. 
Occasional localization. 
for the right 
telephone. 
Direction. 
Distance. 
Direction. 
Distance. 
I2cm 
/4°° 
8sun (24"") 
bl 6o° 
ysun 
(2IC1") 
II 
fl 53-3 
7-7 (23) 
IO 
7756.7 
7 (21) 
9 
8 
7 
fl 5° 
b or k 
f 
7.3 (22) 
7 (21) 
” (33) 
7? 4° ; hi 30 
r8 (24) \ 
U (18) / 
6 
fr SS 
6.5 (19) 
br 40 
5 
(15) 
5 
fr iS 
6 (18) 
hr 40 
6 
(IS) 
4 
fr iS 
6.5 (19) 
hr 50 
4 
(12) 
3 
br \o 
4-5 (13) 
flr 30 
4 
(12) 
2 
fl' 45 
4 (12) 
br 40 
3 
( 9) 
i 
fr 40 
3-3 (10) 
hr 50 
3 
( 9) 
In Case II the probable error for direction varies from o to ± 8% and that for distance 
from o to ± 15%. 
Our expectation that the acoustic field would be contracted more as the 
two sources of sounds approached more to the median plane, and conse¬ 
quently the relative difference between the intensities of the sensations in 
the two ears would grow less, was realized by the second group of experi¬ 
ments. As to the forward and backward projection of the perceived 
sounds the above results resemble those of the first group of experiments,
        

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