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JPH05191305

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DESCRIPTION JPH05191305
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the
improvement of a vehicle acoustic system.
[0002]
2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model
Application Laid-Open No. 63-183795, for example, speakers are disposed at a total of four
locations on the front left and right and rear left and right as a vehicle acoustic device. There is
known an audio apparatus which reproduces an audio signal from each of the speakers.
[0003]
By the way, nowadays, there is a tendency to arrange a telephone device in a vehicle cabin.
For example, in the one disclosed in Japanese Utility Model Application Laid-Open No. 63-10622,
a transmitting microphone and a receiving speaker are disposed around a passenger seat in a
vehicle compartment so that the passenger can talk without having a handset. A so-called handfree type telephone device is provided.
[0004]
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1
However, when the telephone apparatus is provided to a vehicle equipped with the abovedescribed audio apparatus, the following problem may occur. That is, when the occupant
operates the sound device and listens to music etc., when a call is made using the telephone
device, the sound from the sound device is transmitted to the other party of the call through the
telephone device together with the voice of the passenger, It makes it difficult for the other party
to hear the passenger's voice.
[0005]
Therefore, for example, during a call using a telephone device, it may be considered to forcibly
stop control of the operation of the sound device, but in this idea, the occupants feel
uncomfortable for the intention of listening to music etc. give.
[0006]
The present invention has been made in view of such a point, and its object is to keep the
operation of the sound device during the call, and to effectively reduce the extent to which the
sound is transmitted to the other party of the call. To secure good calls.
[0007]
SUMMARY OF THE INVENTION In order to achieve the above object, according to the present
invention, although the operation of the acoustic device is continued even while the telephone
device is in use, the frequency band of the acoustic wave emitted by the acoustic device is
specified.
[0008]
That is, as shown in FIG. 1, a concrete solution means of the invention according to claim 1 is a
vehicle acoustic system provided with an acoustic device 15 exposed to the interior of the vehicle
and a telephone device 20 capable of communicating with the exterior of the vehicle. Target the
device.
Then, in the above-mentioned sound device 15, sound signal reproduction means 8, 9 such as
speakers for reproducing sound signals and radiating the sound into the room, and frequency
bands of sounds emitted by the sound signal reproduction means 8, 9 are set. While the
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frequency band setting means 19 is provided, the in-use detection means 27 for detecting the inuse time of the telephone device 20 and the in-use acoustic signal detected during the use of the
telephone device 20 detected by the in-use detection means 27 A frequency band changing
means 28 for controlling the frequency band setting means 19 so as not to include the voice
band in the frequency band of the sound emitted by the reproducing means 8 and 9 is provided.
[0009]
Furthermore, in the invention according to claim 2, the frequency band changing means 28
according to the invention according to claim 1 is specified, and sound signal reproduction
means 8, 9 other than the sound signal reproduction means provided on the passenger seat
radiates The frequency band setting means 19 is controlled so as not to include the voice band in
the sound frequency band.
[0010]
According to the above construction, according to the first aspect of the present invention,
during a call using the telephone apparatus 20, the voice band is divided in the frequency band
of the sound radiated from the sound signal reproducing means 8, 9 such as speakers. In the
voice band, only the voice of the passenger is transmitted to the other party of the call through
the telephone device 20, so that the other party of the call can hear the voice of the passenger
well.
Moreover, although the sound such as music emitted from the sound signal reproducing means 8
and 9 does not include the frequency of the voice band, the music etc. of the frequency band
other than the voice band is emitted, so the passenger You can listen to
[0011]
In particular, in the invention according to claim 2, in the acoustic signal reproducing means
provided in the passenger seat, although the sound emitted includes the frequency of the voice
band, the arrangement position of the acoustic signal reproducing means is close to the
occupant. Because the volume is sufficiently small, the degree to which the voice is transmitted to
the other party through the telephone device 20 is small, and almost only the voice of the
occupant is transmitted to the other party of the voice, and the occupant usually You can listen to
music etc. continuously.
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[0012]
As described above, according to the vehicle sound device of the invention as set forth in claim 1,
during a call using a telephone device, sound such as music emitted from sound signal
reproducing means such as a speaker is used. Since the voice band frequency is removed, it is
possible to secure a good call in which the other party of the call can easily hear the passenger's
voice without being disturbed by the music etc. while listening continuously to the music and the
like.
[0013]
In particular, according to the second aspect of the present invention, even during a call, the
sound signal reproducing means provided on the passenger seat includes the voice band in the
emitted sound, so that a good call between the other party of the call and the passenger can be
achieved. While securing, the passenger can listen to normal music and the like including the
voice band properly and continuously.
[0014]
An embodiment of the present invention will be described below with reference to the drawings
in FIG.
[0015]
In FIG. 2, 1 is a vehicle whose front is disposed on the left in the figure, 2 is a passenger
compartment, 3 is a steering disposed in the passenger compartment 2, 4 is a driver's seat
disposed behind the steering 3 Reference numeral 5 denotes a front passenger seat disposed on
the left side of the driver's seat 4, and 6 denotes a rear seat long in the vehicle width direction
disposed behind the driver seat 4 and the passenger seat 5.
The driver's seat 4, the front passenger's seat 5 and the rear seat constitute an occupant's seat.
[0016]
Further, FR and FL are respectively disposed at the door for getting on and off to the driver's seat
4 and the passenger seat 5 and the left and right door speakers facing the inside of the
compartment 2, RR and RL respectively behind the rear seat 6 in the compartment 2 Left and
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right rear speakers disposed at the left and right ends, and WF and SP are left and right
instrument panel speakers disposed facing the passenger compartment 2 at the left and right
ends of the instrument panel of the vehicle 1.
Further, reference numeral 8 is a headrest speaker disposed at each of the left and right end
portions of the headrest of the driver's seat 4 and reference numeral 9 is a headrest speaker
disposed at each of the left and right end portions of the headrest of the passenger seat 5.
10 is a body sonic incorporated in the driver's seat 4, and the body sonic 10 vibrates the driver's
seat 4, and changes the magnitude of the vibration according to an acoustic signal from an
acoustic device 15 described later. It is.
The ten speakers and the body sonic 10 constitute eleven acoustic signal reproduction means.
[0017]
Further, reference numeral 12 denotes a transmitting microphone of the telephone device
disposed in front of the driver's seat 4 in the instrument panel of the vehicle 1.
The right instrument panel speaker SP disposed at the right end of the instrument panel is also
used as a receiving speaker of the telephone apparatus.
[0018]
Next, specific configurations of the sound device and the telephone device will be described
based on FIG.
In the figure, the audio device 15 includes an audio unit 16, the 10 speakers FL, FR, RL, RR, WF,
8, 9 and body sonic 10, and acoustic signals to these speakers and body sonic 10. It comprises
amplifiers 16 to 18 for amplification, and a high pass filter 19 for cutting an audio band less than
3.4 KHz shown in FIG. 6 from an audio signal from the audio unit 16 to a speaker other than the
right instrument panel speaker SP. While the high-pass filter 19 sets a frequency band not
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5
including the voice band of FIG. 6 as the frequency band of the sound from the speakers other
than the right-hand instrument panel speaker SP when operating, the frequency of the sound
from these speakers when not operating. The frequency band setting means is configured to be
set as a normal frequency band including the voice band as a band.
[0019]
On the other hand, the telephone apparatus 20 capable of communicating with the outside of the
vehicle includes the telephone unit 21, the transmitting microphone 12, the receiving speaker
(right instrument panel speaker) SP, the transmitting and receiving antenna 22 provided in the
vehicle 1, and the wireless device 23. And a low pass filter 24 for cutting a band exceeding the
voice band below 3.4 KHz from the sound collected by the transmission microphone 12, and the
receiver speaker SP is an acoustic device while the telephone device 20 is in use. No acoustic
signal is input even during operation of 15. Further, the call unit 21 receives an outgoing call
signal and a received signal of a call from the radio 23 and an end signal of the call. In FIG. 3,
reference numeral 25 denotes an on-vehicle air conditioner.
[0020]
Subsequently, control of the sound device 15 and the on-vehicle air conditioner 25 during a call
using the telephone device 20 will be described based on FIGS. 4 and 5. FIG. 4 shows the
generation and output of a control signal from the telephone unit 21. In step S1, the presence or
absence of a call origination signal or a reception signal is determined, and at the start of use of
the telephone device 20 having the origination signal or reception signal, In step S2, the blower
low level command signal of the on-vehicle air conditioner 25 is output to reduce the rotational
speed of the blower and reduce the rotational noise, and in step S3, output the acoustic mute
signal to the speaker and body sonic 10 of the acoustic device 15. .
[0021]
After that, when the call signal or the reception signal disappears in the step S1, the presence or
absence of the call end signal is determined in the step S4, and the output of the blower low level
command signal and the acoustic mute signal is continued during the call without the end signal.
However, when the call having the end signal is ended, the output of the blower low level
command signal is canceled in step S5, and the output of the acoustic mute signal is canceled in
step S6.
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[0022]
FIG. 5 shows control for changing the frequency band of sound from speakers other than the
right-hand instrument panel speaker SP. In step S1, it is determined whether or not the acoustic
mute signal from the telephone unit 21 has been received. Using an audio signal to be sent to
nine speakers FL, FR, RL, RR, WF, 8, 9 and the body sonic 10 other than the instrument panel
loudspeaker SP, using a high pass filter 19 as shown in FIG. Cut out the band and return.
Then, when the acoustic mute signal is not received, the operation of the high-pass filter 19 is
stopped in step S3, and a normal acoustic signal including an audio band of less than 3.4 KHz
from the audio unit 16 is other than the above right-hand instrument panel speaker SP. Resume
outputting to the speaker and body sonic 10, and return to the normal state.
[0023]
Therefore, in the control flow of FIG. 4, the telephone use time detection means 27 which detects
the use time of the telephone device 20 by the presence or absence of the call outgoing signal or
the reception signal and the presence or absence of the call end signal in steps S1 and S4.
Configured. Also, according to step S3 of the control flow of FIG. 4 and the control flow of FIG. 5,
the high-pass filter 19 is activated by the output of the acoustic mute signal during use of the
telephone device 20 detected by the telephone use detection means 27. The voice band below
3.4 KHz in FIG. 6 is controlled to the frequency band of the sound radiated from the nine
speakers FL, FR, RL, RR, WF, 8, 9 and the body sonic 10 other than the right-hand instrument
panel speaker SP. The frequency band changing means 28 is configured not to include.
[0024]
Therefore, in the above embodiment, when the telephone unit 20 is not used during the
operation of the acoustic device 15, the telephone unit 21 does not generate an acoustic mute
signal, and the high pass filter 19 is in the inactive state. Therefore, normal sound including a
voice band is emitted to the vehicle interior 2 from all ten speakers and the body sonic 10.
[0025]
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On the other hand, during a call using the telephone device 20, an acoustic mute signal is
generated from the telephone unit 21 and the high pass filter 19 is in operation. As a result, the
audio band below 3.4 KHz of the audio signal from the audio unit 16 is cut by the high-pass filter
19, and this audio signal is used as a receiving speaker, and nine speakers other than the right
instrument panel speaker SP and the body As the sound is output to the Sonic 10, the sounds
emitted therefrom include only the high band frequencies excluding the voice band. As a result,
in the voice band less than 3.4 KHz, only the voice of the passenger is collected by the
transmitting microphone 12, and in the band exceeding this voice band, the sound radiated from
the nine speakers is in the latter stage of the transmitting microphone 12. The other party of the
call can hear only the voice of the occupant well. Moreover, since the high-band sound is emitted
from the nine speakers and the body sonic 10 of the sound device 15, the passenger can
continuously listen to the sound such as music.
[0026]
FIG. 8 shows an embodiment of the invention according to claim 2. In the above-described
embodiment, although the voice band is not included in the sound of all the speakers other than
the reception speaker SP, the four headrest speakers 8, 9 provided in the driver's seat 4 and the
front passenger's seat 5 The voice band is not included only for the speakers FL, FR, RL, RR, and
WF other than the body sonic 10.
[0027]
That is, in FIG. 8, the high pass filter 19 is disposed between the audio unit 16 and the speakers
other than the speakers provided in the passenger seat, that is, the door speakers FL and FR, the
rear speakers RL and RR, and the left instrument panel speaker WF. Only arranged.
[0028]
Therefore, in the present embodiment, since the sound from the four headrest speakers 8 and 9
and the body sonic 10 provided in the driver's seat 4 and the passenger's seat 5 normally
includes a voice band, the passenger includes a voice band. It is possible to listen to normal
music in a good and continuous manner.
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8
In this case, the headrest speakers 8 and 9 provided on the occupant seats 4 and 5 are close to
the ears of the occupant and the volume is small even if the volume is small, so the small volume
sound is collected by the transmitting microphone 12 The extent to which it is done is small, and
it is effectively ensured that the other party on the call can hear the passenger's voice well.
[0029]
Brief description of the drawings
[0030]
1 is a block diagram of the invention according to claim 1.
[0031]
2 is a diagram showing the arrangement of the acoustic device and the telephone device on the
vehicle.
[0032]
3 is a block diagram showing the electrical configuration of the acoustic device and the
telephone device.
[0033]
4 is a flow chart showing the output control of the acoustic mute signal by the telephone unit.
[0034]
5 is a flowchart showing change control of the frequency band of the sound from the speaker.
[0035]
6 is an explanatory view of the voice band.
[0036]
7 is an explanatory view of changing the frequency band of the sound from the speaker.
[0037]
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8 is a block diagram of the main part of the acoustic device showing an embodiment of the
invention according to claim 2.
[0038]
Explanation of sign
[0039]
4 driver's seat (passenger's seat) 5 front passenger's seat (passenger's seat) SP, WF Instrument
panel speaker (acoustic signal reproduction means) FR, FL Door speaker (acoustic signal
reproduction means) RR, RL Rear speaker (acoustic signal reproduction means) 8, 9 , Headrest
speaker (sound signal reproduction means) 10 body sonic (sound signal reproduction means) 15
acoustic device 19 high-pass filter (frequency band setting means) 20 telephone device 27
detection means for telephone use 28 frequency band change means
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