close

Вход

Забыли?

вход по аккаунту

?

JPS61230496

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 JPS61230496
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
acoustic characteristic variable type sounding apparatus which changes acoustic characteristics
according to the frequency of a tone signal to be generated. 2. Description of the Related Art In
recent years, a method has been used in which a sound generator is provided with a reflector or
a horn to give various acoustic characteristics. Hereinafter, an example of the above-mentioned
conventional sound producing apparatus will be described with reference to the drawings. FIG. 4
shows a conventional sound producing apparatus. In FIG. 4, 1 is a signal source. An amplifier 2
amplifies a musical tone signal from the signal source 1, a speaker 3 converts the musical tone
signal from the amplifier 2 into a sound wave, and a speaker horn 4 changes acoustic
characteristics when the sound wave emitted by the speaker 3 is emitted. . The operation of the
sound generation apparatus configured as described above will be described below. A musical
tone signal generated from the signal source 1 is amplified by the amplifier 2 and converted into
a sound wave by the speaker 3 to be emitted to the air through the speaker horn 4. Figure ijfr5
shows how the sound waves emitted from the speaker horn diffuse into the room. In FIG. 6, 6 is a
sound producing device, and 6 is a listener who listens to the sound emitted from the sound
producing device 6. The musical tone emitted from the sound generator 6 is transmitted to the
listener 6 as shown in FIG. Problems to be Solved by the Invention However, in the configuration
as described above, the acoustic characteristics of the sound wave emitted from the speaker 3
are uniformly determined by the speaker horn 4 regardless of the frequency of the sound wave
generated, and the speaker 3 sounds The problem is that the optimum speaker horn effect of the
acoustic characteristics with respect to the frequency of the sound wave being obtained can not
be obtained. SUMMARY OF THE INVENTION In view of the above problems, the present
invention provides an acoustic characteristic variable-type sounding device capable of changing
the acoustic characteristic according to the frequency of the generated sound wave and having
02-05-2019
1
the optimum acoustic characteristic of the sound wave being constantly emitted. Means for
Solving the Problems In order to solve the above problems, the sound characteristic variable type
sounding device of the present invention comprises a signal source, an amplifier, a speaker, a
frequency detection device, a horn characteristic control device, and sound characteristics. It is
equipped with a variable horn. Operation The present invention can change the acoustic
characteristics of the horn according to the frequency of the generated sound wave, and can
produce the optimum sound effect for the sound wave which is always sounding, by the abovementioned configuration. Embodiment An acoustic characteristic variable type sounding
apparatus according to an embodiment of the present invention will be described with reference
to the drawings. FIG. 1 is a block diagram of a sound characteristic variable type sounding
apparatus according to a first embodiment of the present invention.
In FIG. 1, 7 is a signal source, 8 is an amplifier, and 9 is a speaker, which are the same as in the
prior art. 1o is a frequency detection device that detects the frequency of the musical tone signal
from the signal source 7 and outputs a signal according to the frequency, 11 is a horn control
device that drives the acoustic characteristic variable horn according to the signal from the
frequency detection device 10; An acoustic characteristic variable speaker horn 12 can change
acoustic characteristics according to the output of the horn control device 11. The operation of
the sound characteristic variable type sounding apparatus configured as described above will be
described below with reference to FIGS. 1, 2 and 3. FIG. It is assumed that a tone signal of 5 fr Hz
is generated at the signal source 7. This musical tone signal is amplified by the amplifier 8,
converted into a sound wave by the speaker 9, and radiated into the acoustic characteristic
variable speaker horn 12. In synchronization with this, the frequency detection device 10 senses
the tone signal from the signal source 7 as f, Hz and sends a control signal to the horn control
device 11. The horn control device 11 receives the control signal from the frequency detection
device 1 o and closes the opening 12 b of the acoustic characteristic variable speaker horn 12. At
this time, the inside of the acoustic characteristic variable speaker horn 12 becomes a natural
vibration system from the speaker 9 to the opening 121 L to give an effect to a musical tone
component. At the same time, the sound wave emitted from the speaker 9 is not emitted from the
opening 12 b of the acoustic characteristic variable horn 12, but has an acoustic characteristic
that it is emitted only from the opening 121 L and diffuses and propagates. That is, the speaker
horn 12 internally generates a standing wave in the distance from the speaker 9 to the opening
12 &, and at the same time a sound field is formed only by the sound radiated from the opening
121L. This situation is illustrated in FIG. Next, it is assumed that the ft Hz (ft \ f +) o tone signal is
generated from the signal source 7. This musical tone signal is amplified by the amplifier 8,
converted into a sound wave by the speaker 9, and radiated into the acoustic characteristic
variable speaker horn 12. In synchronization with this, the frequency detection device 10 senses
the tone signal from the signal source 7 as f, Hz and sends a control signal to the horn control
device 11. The horn control device 11 receives the control signal from the frequency detection
device 10 and opens the opening 12 b of the acoustic characteristic variable speaker horn 12. At
02-05-2019
2
this time, the inside of the acoustic characteristic variable speaker horn 12 is an eigen vibration
system layer from the speaker 9 to the opening 12 b to provide an effect to a musical tone
component. At the same time, the sound wave emitted from the speaker 9 has an acoustic
characteristic that it radiates from both the opening 121 L and the opening 12 b of the acoustic
characteristic variable horn 12 and diffuses and propagates.
That is, the speaker horn 12 internally generates a standing wave between the speaker 9 and the
distance to the opening 12b, and at the same time, the sound emitted from the opening 12 & and
the sound emitted from the opening 12b interfere with each other. While creating a sound field 1
In this case, the listener will be placed in the acoustic space different from that when the abovementioned sound of f and Hz is emitted from the opening 12 & of the speaker horn 12, and this
situation is illustrated Figure 3 is a diagram. By changing, a variety of sound fields are formed in
the space, and a more varied, fresher, feeling of sound field than ever before. The listener can
enjoy the realism. In the embodiment, the acoustic characteristic variable speaker horn 12 has a
variable opening portion of the horn. However, the acoustic characteristic variable speaker horn
12 may have the directivity of the horn variable or the shape of the horn may be variable. Effects
of the Invention As described above, according to the present invention, various sound fields are
formed in space by providing an acoustic characteristic variable speaker horn, a frequency
detection device, and a horn control device, and a more varied and vivid sound field. You can get
a sense of presence.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a block diagram of the sound characteristic variable type sounding device according to
the first embodiment of the present invention, and FIG. 2 is a view from the sound characteristic
variable type sounding device of FIG. 3 is a schematic view of the sound wave of the present
invention transmitted to the air, FIG. 3 shows the sound characteristic variable type sound
generator of FIG. 1, opening the opening 12b and transmitting the sound wave from both the
opening 12 & and the opening 12b to the air. FIG. 4 is a block diagram of a conventional sound
producing apparatus, and FIG. 6 is a schematic view when a sound wave is transmitted from the
sound producing apparatus of FIG. 4 to the air.
7ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
02-05-2019
3
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и 12 ...... sound ??-variable speaker horn. Name of Agent
Attorney Nakao Toshio Other 1 person Figure 1 Figure 2 Figure 3
02-05-2019
4
Документ
Категория
Без категории
Просмотров
0
Размер файла
11 Кб
Теги
jps61230496
1/--страниц
Пожаловаться на содержимое документа