close

Вход

Забыли?

вход по аккаунту

?

JPS6264195

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 JPS6264195
[0001]
A, Field of Industrial Application The present invention relates to a composite loudspeaker
device, in particular for use in audio equipment. B1 Overview of the Invention A composite
speaker combining multiple speakers having different frequency characteristics, in which the
position of the speaker mainly in charge of the mid-frequency and the high-frequency is distant
compared to the position of the speaker mainly in charge of the low frequency A speaker system
that compensates for the delay in perception of low-frequency sound in the auditorium by
allowing the Nakashiro-frequency sound and high-frequency sound to reach the hearing delayed
by comparison with the low-frequency sound. C0 Conventional Technology In general, a speaker
for audio equipment uses a large diameter speaker for low frequency reproduction and a small
diameter speaker for high frequency use, in order to obtain faithful reproduced sound from low
frequency to high frequency The compound speaker which used both in combination is used.
Further, there are also cases where the mid-frequency speaker is separately used by dividing the
frequency band. FIG. 7 shows an example of such a speaker arrangement. 7 (a) is a front view,
and FIG. 7 (b) is a top view. In the figure, 1 represents a low frequency speaker, 2 represents a
mid frequency speaker, and 3 represents a high frequency speaker. The reproduced sound
obtained by the configuration of FIG. 7 reaches the listener in the same time period from the low
frequency component to the high frequency component. That is, the 1 frequency-arrival time
characteristic becomes flat. However, as described by the applicant in the patent application
entitled "Sound Quality Compensation Circuit for Narrow Band Transmission System" on July 1,
1984, the auditory senses high frequency sound faster than low frequency sound. . Therefore, in
the above-mentioned Japanese Patent Application, it has been proposed to compensate for the
delay in perception of low frequency sound to obtain a powerful sound field. Problems to be
Solved by the Invention D0 However, the method described in the above-mentioned Japanese
Patent Application has the disadvantage of requiring an equalizer with a duplexer configuration
02-05-2019
1
and a delay line of an acoustic frequency band. The object of the present invention is to use a
complex type speaker that takes charge of the frequency band of sound to some extent, and
delay the high frequency component compared to the low frequency component only with the
speaker system, to create a powerful sound field. It is an object of the present invention to
provide a composite loudspeaker arrangement which makes it easy to obtain. Means for Solving
the E0 Problem To achieve the above object, the composite speaker device according to the
present invention is characterized in that the sound propagation distance of the high frequency
speaker is longer than the sound propagation distance of the low frequency speaker. . F1 Action
FIG. 4 (a) shows the characteristic in the case where the horizontal axis is logarithmic frequency
and the vertical axis is speaker output, the outputs of the respective components are equal, and
the frequency-output characteristics become flat.
The figure (b) is a frequency characteristic of arrival time from a speaker to a listener, and is flat.
In the figure, the reference numbers indicate the characteristics of the loudspeaker with the
corresponding reference numbers in FIG. On the other hand, FIG. 5 is an example of the
perceptual time of human auditory sense, that is, an example of the frequency characteristic
indicating how long the sound at the entrance of the ear is being heard, and the low frequency
sound sounds late. Therefore, combining the characteristic of FIG. 7 with the characteristic of
FIG. 4 (b) and this, the overall perception time until an auditory perception by adding an
electrical signal to the speaker in this case is as shown in FIG. The low frequency sound is
perceived late. Although the out-of-band tail of the frequency characteristic of the speaker in FIG.
4 (a) is broadened, the tail of the delay time and the perception time in FIGS. 4 (b) and 6 is not
broadened. , To simply simplify the description. This is because the speaker has a steep cutoff
characteristic. That is, in the following, the present invention will be described ignoring the
spread of the tail of the frequency characteristic of the speaker. FIG. 1 is a basic layout diagram
of the composite speaker apparatus according to the present invention, in which the positions of
the speakers 2 and 3 respectively responsible for the mid and high frequencies are farther away
compared to the speaker 1 responsible for low frequencies, A few sounds are now delayed. The
distance between the speakers 1 and 2 is dl m, and the distance between the speakers 1 and 3 is
d 2 rx. Tubes 4 and 5 are provided on the front of each of the speakers 2 and 3 in order to
prevent sound diffusion. Since the propagation speed of sound in the air is about 340 per second
at normal temperature, the time τ1 required to propagate the distance dHm is as follows. If dl is
1111, the delay time is about 3 was. Assuming that d2> dt and d1 == 1 m, then d2 is 1.5 trh to 2
m. Further, if the length of the tubes on the front surfaces of the speakers 2 and 3 is made
variable, it means that the variable delay line is inserted equivalently. According to the method
described above, the high frequency component is delayed compared to the low frequency
component only with the speaker system. You can easily get a powerful sound field. The
invention will now be described in more detail by way of examples with reference to one
drawing, which are by way of example only and that there can be various variations and
modifications without departing from the scope of the invention. Of course. G, Embodiment The
02-05-2019
2
composite speaker apparatus shown in FIG. 1 can achieve the object of the present invention in
principle. However, with this arrangement, the depth becomes large and the storage place is
limited. Therefore, as shown in FIG. 2, the part of the tube is bent and a reflector is inserted to
keep the distance of dlyd 2 in FIG. It is practical to reduce the depth of
FIG. 2 (a) is a plan view of such a composite speaker device, and FIG. 2 (b) is a front view.
Although the speakers 3 are separated, it is possible to arrange three speakers as shown in (Q).
Now, the total knowledge π time from the application of an electric signal to each speaker of the
composite speaker apparatus shown in FIGS. 1 and 2 to the perception of the sound is di, d2 in
the perceptual time characteristic shown in FIG. The characteristic of FIG. 3 is obtained by
combining the corresponding delay times τ 11 τ 2. That is, by adjusting dl + d 2, it is possible
to obtain a uniform perceptual time from low to high frequencies, as described in the
aforementioned patent, if the perceptual time is uniform, the temporal change of the sound
source On the other hand, the sound pressure changes sharply and the feeling of force increases
remarkably. If this is applied to a stereo system, the position of the sound image becomes sharp.
As described in detail in the H1 invention, according to the present invention, by compensating
for the low frequency delay of the auditory perception time by the arrangement of the speakers,
the sound of the steep sound pressure change can be equivalently heard, A sense of force and
clarity increase. Further, in the case of stereo sound, an advantage is obtained that the position of
the sound image is sharp.
[0002]
Brief description of the drawings
[0003]
1 is a basic layout diagram of a composite speaker device according to the present invention, FIG.
2 is a practical layout diagram of a composite speaker device according to the present invention,
and FIG. 3 is a device shown in FIGS. Diagram showing the overall perception time-frequency
characteristics obtained, Figure 4 is a composite.
Fig. 5 is a diagram showing the output of a speaker device and the relationship between arrival
time and frequency, Fig. 5 is a diagram showing frequency characteristics of human perception
time, Fig. 6 is a diagram showing total perception time-frequency characteristics of a
conventional composite speaker device, FIG. 7 is a diagram showing the configuration of a
conventional composite speaker device. l ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・
02-05-2019
3
・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・, 4,5 ..... ... tube.
02-05-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
12 Кб
Теги
jps6264195
1/--страниц
Пожаловаться на содержимое документа