close

Вход

Забыли?

вход по аккаунту

?

JPS524802

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS524802
(4000 yen) C ? ?-Patent application (4) 1 ии ? ? 1150 ? i 1-July 1 person ? ? name + ? + и
(582) Representative of Matsushita Electric Industrial Co., Ltd. Shoji Matsushita 4 Agent ? 571
Address Osaka Prefecture Kadoma City Oji Kadoma 1006 Address 54 J 08 169 G ? Japan Patent
Office Open Patent Gazette ? JP 52-4802-Specification 1, Title of the Invention
Headphones
3. Detailed Description of the Invention The present invention relates to a headphone device for
listening to a program source on which a 2-channel signal of a record and magnetic tape is
connected with a reproduction headphone, and while listening to a headphone with a program
north t speaker The headphone device is provided in the same manner as listening. Fig. 1 shows
a program source such as a record, ia air tape etc. in the room ?The state of playback and
listening on a speaker is shown below, and in the figure of * ', 1 is a playback device for playing
back the program source. Left and right signals reproduced by the above reproduction apparatus
1 [Speaker to convert sound wILK, 4 is a listener, 4 and 6 are each a speaker of the listener 4,
sound waves radiated from the speaker 2.3 are direct and ms The sound is reflected and reaches
the ear 6.6 of the listener 4 indirectly to the listener 4 and the listener 4 hears the sound interest
to a point outside the listener 4011, for example, a point. Fig. Iml shows a state in which the
program source of ? 1 and Oka-is reproduced by the reproduction apparatus 1 and listened to
by the headphone 7 as shown in Fig. 2; Of the listener 4, for example, the point BKf @ is iI
brushed. Note that EndPage: 1 to 8 in Genus 2. Are respectively left and right electroacoustic
transducers of the headphone 7. The present invention is a headphone device t * that can be
used to listen to the outside of the listener 40 like the speaker listening shown in FIG. 1 by
listening to the headphone 7 as shown in FIG. . FIG. 3 shows that the next sound wave emitted
from one of the speakers a in the speaker listening is 6 ░ to the left and right ears of the listener
09-05-2019
1
4 and reaches the eardrum through the auricle of the left and right ears 6, 6 and the external ear
canal. In the left and right ears 6, 6, Il [film gives SL, 89 sound pressure respectively. The sound
pressure BLe8R is the angle between the front of the listener 4 and the position of the speaker a,
the distance between the speaker a and the listener 4! 1 Determined by the distance d between
the ears and the frequency. The average distance d between the human ears is +17 cPR, and this
distance IwId can be ignored. II K, FIG. 4 shows sound pressure level characteristics on the
tympanic membrane of the left and right ears 6.6 at an angle ?-3oo. In addition to the abovementioned direct sound, indirect sound reflected by a wall or the like reaches the ears 6, 6 as
shown in FIG. FIG. 6 shows the transfer function of FIG. 3 as a transfer function. The sound wave
of dangerous sound pressure 8 emitted from the speaker 3 reaches the ears 6, 6 together with
the direct sound and the indirect sound. That is, as the direct sound, the sound pressure SL is
given to the tympanic membrane of the left ear 6 through the sound ea path af having the
transfer function G?L (ja +) t-, and the transfer function GIFR (j?) and the angle ? and the bothear distance 111d thti8 slow Jlll!
KL (r (?)! The sound pressure SRt is applied to the tympanic membrane of the right ear via the
included ""-) containing sound box 1111b Ц r. On the other hand, as the interharmonic sound,
sound pressure is given to the tectonic film of the left ear via an acoustic path C having
transmission 1111 kG ?, r, (j?) and time delay g * element (? ? 1), and transfer function Gi
The beat SK sound pressure of the right ear is provided via an acoustic path d 'having' q, R (1?)
and a time delay element (?6). Note that transfer functions GR (j?) and QL (pus) have an angle
14 p and a distance of 1. It is determined by the distance d and the frequency. However, the
distance d can be ignored. FIG. 6 shows the acoustic transmission path of the left channel in
headphone listening, and the left channel signal is converted to the sound wave Kf of the sound
pressure S by the electric sound I # smart converter of the left of the headphone The
transmission function and the transmission determined by the structure of the ear canal etc. of
the ear and ear canal WkK @ is reached via an acoustic path e having a transfer function GH
(jam) including Pt, and 8fa sound pressure occurs on the tympanic membrane. As is apparent
from the north wall of ? 6 and FIG. 6, in the acoustic path of only the left channel in headphone
listening, the amount of transmission in the speaker listening all @ L (l?) s Gtpu (1 ?) G '? t (j?
) PG '(pH (j?) and time delay elements ? (?), ?i, ?-and 44bK, transfer function-(1? ? extra
added. This is also true for the right channel. From this difference K, the preface is localized
outside the head when listening to the speaker, and the sound failure is localized inside the head
when using the headphone. In the headphone device of the present invention, it is intended to
use an electric circuit ** to remove the element that is tailed by an electric circuit and remove an
element that is added extraly by listening to the headphone by an electric circuit so as to obtain
the same mt- In the following, an embodiment of the present invention will be described with
reference to FIG. In FIG. 7, 1 is a playback device for playing back a program in which a signal of
2 channel stereo is recorded, 7 is a headphone, 8.9 is a converter of the left and right of
headphone T, the above playback! An electricity meter shown below is connected between 1111
09-05-2019
2
and the headphone 7. 10: an electric path equivalent to the number of acoustic transmission a
intervened between the right ear of the speaker and the eardrum of the right ear of the listener:
1aII number t *, an electric path 11; And an electric circuit having a transfer function equivalent
to the sound 41 transfer function mediated by the sound Wk11 # 'IK of the left ear of the
listener, 12 is interposed between the right speaker at the time of speaker listening and the
eardrum of the left ear of the listener An electric circuit having a transfer function equivalent to
the sound transfer function, an electric circuit having a transfer function equivalent to the sound
transfer function interposed in the left speaker at the time of listening to a 13-speaker speaker
and the right ear of the listener, 14 Is a delay circuit that causes a time difference equivalent to
W # dark difference between the left and right ears when the sound wave emitted from the left
side speaker reaches the tympanic membrane Kjl of the left and right ears; 18 is the right sound
wave emitted from the right side speaker; A delay circuit that causes the time difference between
the left and right ears to reach IIIIK and the equivalent danger time difference. 16.17 is an adder,
and 18.1@l is intervened in the amount of covering of IIK headphones with headphones and each
ear on left and right It is an electrical circuit having an inverse function of the acoustic transfer
function.
Further, 2O and al are each a friend circuit which can reproduce the dangerous left and right
channel signal corresponding to the indirect sound, and this-path 20.21 is respectively from
delay circuit 22.28 and feedback path-24 and 215. It is composed, especially with a
reverberation effect. 26.27Fi Respectively delay circuit 28.29 Right te is emitted from the left
speaker and the stuttering is reflected by the wall etc., and the right ear 1 danger reaches the left
ear as indirect sound Sound transfer function of I # path , An electric circuit with a transfer
function equivalent to the one, and 30.31 is an electric circuit with a transfer function equivalent
to the acoustic transfer function of the acoustic path that diffracts the head of the indirectsounding hearing head to the left ear or the right eyebrow is there. As described above, in the
present invention, as shown in FIG. 6, one circuit 11! All the sound 41B paths shown in FIG. 3 are
composed of electric circuits, and the same condition as that of the speaker hearing can be
obtained even though it is a headphone device. It is localized to the outside of the sound image it
E that is headphone listening. It is possible to eliminate fatigue specific to headphone listening
even if listening to headphones for a long time. FIG. S shows another embodiment of the present
invention, and the common paths 14 and 26 in FIG. The delay circuit 3a is common to IT. & 34
░ Srs, a @, BY are adders respectively. FIG. 9 is a simplified circuit for the indirect sound rate t,
the signals of the left and right leg channels are added by the adder 38, and a path consisting of
the delay circuit 89 and the return path 4 o The signal is converted into eight signals
corresponding to the indirect sound through 411i, and is taken out through the phase shifter
42.4m having characteristics represented by J1 respectively, and this output is applied to AX and
Y in FIG. When the circuit tube of FIG. 9 is used, the circuit 20.21 of FIG. 8 is unnecessary and
the circuit configuration can be simplified. As described above, the present 11 @ ? has an
advantage that Tol> can be obtained with a headphone structure as described above, and an
09-05-2019
3
effect equivalent to that of a speaker and a listener can be obtained in headphone listening and
fatigue peculiar to headphone listening can be eliminated.
4. Brief description of the drawings. FIG. 1 is a schematic view showing a speaker listening state,
FIG. J [2 is a schematic view showing a headphone listening state [FIG. 8 is a left ear speaker in
FIG. A schematic diagram of the path leading to the left and right ears of the listener, s4 is a
sound pressure level characteristic diagram on the tympanic membrane of the left and right ears
in Fig. 3 Fig. 6 is a diagram shown by Ig3 Fig. Acoustic transfer function, Fig. 6 6 shows the
transfer path of the left channel in headphone listening as an acoustic transfer function next
time, FIG. 7 is a block diagram of a headphone device in 111 mK of the present invention, and
FIG. 8 is a block diagram of another embodiment. The figure is a block diagram of the main part
of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 .........
Reproduction apparatus, 4 ... Listeners, 6.6 .. Ear: 7 ... Headphones 8.9 ..... Electroacoustic
transducer. Name of the agent ** Toshio Nakao et al. 1 person EndPage: 3 Fig.1 Fig.2 Fig.2 Fig.3
JPA 52-4802 (4) Fig.4 Yo 4 (? = 3 Q ? 5 G G 'qt < j Cut 7L 'Figure 6 End Page: 4 Figure 8 Figure
9 Figure 6 Inventors and agents other than the above 5 Address same place (2) Agent -7 \
EndPage: ?
09-05-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
13 Кб
Теги
jps524802
1/--страниц
Пожаловаться на содержимое документа