close

Вход

Забыли?

вход по аккаунту

JPH05212117

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 JPH05212117
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
acoustic device for the purpose of relaxation and the like, and more particularly to relating
biological information to the reproduction of sound.
[0002]
2. Description of the Related Art As a prior art related to the present invention, there are a
compact disc for the purpose of relaxation and a pillow in which a speaker is incorporated in a
cushioning material as disclosed in Japanese Utility Model Application Publication No. 1-55488.
It has been proposed that a sound source device for supplying an audio current to the speaker
and the user to hear a monotonous sound stored in a memory.
[0003]
Further, as a technique relating to sound for reproducing biological information, as disclosed in
JP-A-62-67098, one that controls the level of sound stimulation in accordance with changes in
skin electrical activity, JP-A As disclosed in Japanese Patent Application Laid-Open No. 63186662, a system has been devised which filters a specific band of an electroencephalogram and
generates stereo sound according to the level of the electroencephalogram.
[0004]
[Problems to be Solved by the Invention] However, in the case of means for presenting sound by
means of a compact disc, the user is completely passive with respect to the sound from the
08-05-2019
1
speaker, and the biological rhythm etc. possessed by the user are completely ignored there were.
[0005]
In addition, there is a problem that the sound environment is unnatural and lacks realism only by
repeating the sound monotonously.
[0006]
Furthermore, when associating biological information and acoustic stimulation, information such
as skin electrical activity and brain waves can not be obtained unless the user wears an electrode,
which causes the user to feel uncomfortable.
[0007]
The present invention solves the above-mentioned problems, and its first object is to realize
interactive sound presentation means by feeding back the user's biological information obtained
without contact to the sound.
[0008]
A second object of the present invention is to make the presented sound more realistic.
[0009]
SUMMARY OF THE INVENTION In order to solve the above problems, an acoustic device
according to the present invention comprises a biological information acquisition device for
acquiring biological information such as body movement of a user, a storage device storing data
of sound effects, and A control device that determines sound effect data to be read according to
the biological information signal from the biological information acquisition device; and a reading
device that reads the sound effect data determined by the control device from the storage device
at the same time A mixing device for mixing sound effect data, and an audio reproduction device
for reproducing the output of the mixing device are provided.
[0010]
Further, a loop processing device for repeatedly reproducing the read sound effect data is
provided between the reading device and the mixing device.
[0011]
08-05-2019
2
According to the present invention, according to the above configuration, the control device
outputs a read command of the sound effect data to the read device based on the biological
information acquired by the biological information acquisition device, and the read device reads
the sound effect data.
The read sound effects are mixed by the mixing device and reproduced by the sound
reproduction device.
[0012]
Also, one of the read sound effect data is repeatedly reproduced by the loop processing device.
[0013]
Embodiments of the present invention will be described hereinbelow with reference to the
drawings.
[0014]
FIG. 1 is a block diagram of a first embodiment of the present invention.
In the figure, reference numeral 1 denotes a living body information acquiring apparatus, which
comprises a piezoelectric element 2, a filter circuit 3, an amplification circuit 4 and a smoothing
circuit 5.
The piezoelectric element 2 uses a thin film processed material such as polyvinylidene fluoride.
The piezoelectric element 2 may be attached to a place where the user's body movement can be
easily detected, such as a mattress surface of a bed.
The storage device 6 stores n sound effects, each of which is a digitization of a bird's cry, cuckoo
as sound effect 1, photo tone as sound effect 2, photo effect 3 A crying voice such as a whitetail
08-05-2019
3
is stored.
In the first embodiment, three EPROMs are used as the storage device 6.
The control device 7 is connected to the living body information acquiring device 1, and further
connected to the reading devices 8a, 8b and 8c.
Each of the readout devices 8 a, 8 b and 8 c is connected to the mixing device 9, and the mixing
device 9 is connected to the input terminal of the audio reproduction device 10.
As the audio reproduction device 10, use of stereo or the like can be considered.
[0015]
FIG. 2 is a circuit diagram showing the configuration of the control device 7.
The comparators 11a, 11b and 11c are configured to compare the respective reference voltages
with the output voltage from the smoothing circuit 5.
[0016]
In the above configuration, the piezoelectric element 2 converts physical pressure changes on the
body surface due to the user's body movement, heartbeat or respiration into electrical signals.
The filter circuit 3 passes only the signal of the frequency band corresponding to the human
movement. In the first embodiment, a band pass filter of 1 to 10 Hz is used. The amplification
circuit 4 amplifies the electrical signal passed from the filter circuit 3 to an appropriate level. The
smoothing circuit 5 rectifies and integrates the amplified electrical signal.
[0017]
08-05-2019
4
The control device 7 determines a sound effect to be reproduced based on the biological
information from the biological information acquisition device 1. The reference voltages given to
the comparators 11a, 11b and 11c mean threshold values respectively corresponding to the
sound effect 1, the sound effect 2 and the sound effect 3. When the output voltage from the
smoothing circuit 5 exceeds the reference voltage, the output from the comparator 11 becomes
HI. The reference voltage can be freely set by the variable resistor. It is of course possible to
realize the processing in the control device 7 as described above by software using a
microcomputer incorporating an A / D converter.
[0018]
The readout devices 8a, 8b and 8c start readout of the corresponding sound effect data when the
control signal from the control device 7 becomes HI. If the control signal becomes HI again
during data read, the address being read is not reset. The read data is output to the mixing device
9 in real time.
[0019]
The mixing device 9 mixes the sound effect data from the reading devices 8a, 8b and 8c and
outputs the mixed data to the audio reproduction device 10. The output signal from the mixing
device 9 may be converted into analog or digital according to the function of the audio
reproduction device 10. The audio reproduction device 10 reproduces the given data as an
acoustic stimulus, that is, a cuckoo, a whistle, a white roar.
[0020]
FIG. 3 is a graph showing the reproduction timing of the sound effect determined based on the
reading sound effect data determination method according to the first embodiment. In FIG. 3, (a)
is a graph showing the change of the output from the smoothing circuit 5 with the passage of
time as a voltage. T1, T2 and T3 are threshold values respectively corresponding to the sound
effect 1, the sound effect 2 and the sound effect 3. (B) is a timing chart showing the reproduction
time of each sound effect. At time A, the A / D conversion value exceeds the threshold value T1,
and in accordance with this, the reproduction of the sound effect 1 is started. Similarly,
08-05-2019
5
reproduction of the sound effects 2 and 3 is started at times B and C, respectively.
[0021]
FIG. 4 is a block diagram of a second embodiment of the present invention. In the storage device
6, audio data of "Ogawa's Serage" is stored as a new sound effect. We will call this background
sound. Further, a loop processing device 12 is provided between the reading device 8 d used for
reading the background sound data and the mixing device 9.
[0022]
In the above construction, the loop processor 12 continuously reproduces the background sound
by loop processing. Loop processing enables long-time reproduction by connecting the beginning
and end of a finite number of data sequences. For example, even if only a few seconds can be
reproduced from the data length of the stream sound of the background sound, reproduction can
be performed continuously by this method.
[0023]
Further, the control device 7 determines the reproduction timing of the sound effect other than
the background sound based on the biological information from the biological information
acquisition device 1, and sends control signals to the reading devices 8a, 8b and 8c. The readout
devices 8a, 8b and 8c output the corresponding sound effect data to the mixing device 9. The
mixing device 9 mixes the output data from the loop processing device 12 and the output data
from the reading devices 8a, 8b and 8c, and outputs the mixed data to the audio reproduction
device 10. The voice reproduction device 10 reproduces a sound landscape in which a bird stalks
against the background of a stream of Ogawa.
[0024]
As described above, the acoustic device of the present invention reproduces sound based on the
biological information acquired by the biological information acquiring device, and therefore
interactive sound presentation becomes possible.
08-05-2019
6
[0025]
In addition, it is possible to present a realistic sound by continuously reproducing the
background sound and adding an effect sound thereto.
[0026]
Furthermore, there is no need for an electrode device or the like in order to acquire the user's
biological information in a non-contact manner, and it is possible to eliminate the discomfort of
wearing.
08-05-2019
7
1/--страниц
Пожаловаться на содержимое документа