JP6498941B2 - Sound effect blower - Google Patents

Description

  The present invention relates to a sound effect blowing device that is mounted on a vehicle and provides directional information to vehicle occupants using sound effects.

  Conventionally, a sound effect blowing device that provides information to a vehicle occupant with sound effects has been proposed. Such devices include one that outputs an alarm sound by a buzzer and one that outputs an alarm sound by a speaker (see, for example, Patent Documents 1 and 2).

JP 2007-72631 A JP 2010-80995 A

  However, since the conventional sound effect blowing device is configured to simply output an alarm sound, it cannot transmit information on a direction such as an alarm direction.

  Note that this problem is not limited to the output of warning sounds (for example, an approaching door opening sound indicating the approach of another vehicle, and a seat belt not-fitted sound). This is also a common problem when outputting all sound effects including alarm sounds, such as sounds that give the vehicle occupants a feeling of exhilaration and comfort, and sounds that guide and support the behavior of the vehicle occupants.

  The present invention solves such a problem, and an object of the present invention is to provide a sound effect sounding device capable of transmitting direction information.

The sound effect sound device according to the present invention is a sound effect sound device that is mounted on a vehicle and provides direction information to the vehicle occupant using sound effects, and is a plurality of sound effect output sources. A speaker and control means for generating a frequency signal for outputting a sound effect from each of the plurality of speakers, wherein the control means transmits one piece of information transmitted to a vehicle occupant from the plurality of speakers. A frequency signal that is transmitted by sound and whose sound pressure is gradually reduced or increased is output to at least one of the plurality of speakers, and the other speakers other than the at least one speaker are output during this output period. by outputting a frequency signal sound pressure is interposed a silence period to a frequency signal which is a constant for, the one piece of information to the at least one speaker Characterized in that the information having the direction to direct the identification.

According to the sound effect sounding device of the present invention, the frequency signals to the plurality of speakers are controlled to output the sound effect from at least one of the plurality of speakers while changing the sound pressure. By changing the sound pressure in this way, the consciousness of the vehicle occupant can be directed to any one of the speakers, and direction information can be transmitted. Further, a frequency signal with a constant sound pressure is output to the other speakers, and a frequency signal in which the sound pressure gradually decreases or increases is output to at least one speaker during this output period. As described above, when the sound pressure of the sound effect from the other speaker is constant and the sound pressure of the sound effect from at least one speaker is gradually changed, the vehicle occupant is more conscious of the speaker on the side where the sound pressure changes. As a result, it is possible to transmit direction information.

  Further, in the sound effect blowing device according to the present invention, prior to transmitting the one information to the vehicle occupant by the sound effects from the plurality of speakers, a frequency signal is output to the plurality of speakers at the same timing. It is preferable to output basic sounds from the plurality of speakers.

  According to this sound effect blowing device, prior to transmitting one piece of information to the vehicle occupant, a frequency signal is output to a plurality of speakers at the same timing, and a basic sound is output from the plurality of speakers. Thus, prior to transmitting one piece of information, basic sounds can be output from a plurality of speakers, and the consciousness of the vehicle occupant can be directed to the voice. This can reduce the possibility of missed hearing when transmitting direction information.

  Further, in the sound effect sounding device according to the present invention, the plurality of speakers are two, and are arranged in a meter unit on which a vehicle instrument is mounted, and urge the vehicle occupant to be alerted by an alarm sound. It is preferable to provide information.

  According to this sound effect sounding device, the plurality of speakers are two, and are arranged in a meter unit on which a vehicle instrument is mounted, and provide information that alerts the vehicle occupant with an alarm sound. Therefore, it is possible to output an alarm sound having direction information from the front of the vehicle driver who wants to transmit the alarm sound most quickly and accurately.

  Moreover, in the sound effect blowing device according to the present invention, a first terminal group consisting of a plurality of terminals capable of outputting different frequency signals, a first addition circuit for adding the frequency signals from the first terminal group, A second terminal group including a plurality of terminals capable of outputting different frequency signals, and a second addition circuit for adding the frequency signals from the second terminal group, and outputs one from the first addition circuit. And the output from the second adder circuit is input to the other speaker.

  According to this sound effect blowing device, the frequency signals can be superimposed by each adder circuit, and the variation of sound can be increased.

  According to the sound effect blowing device of the present invention, direction information can be transmitted.

It is a circuit diagram which shows the outline of the sound effect blowing apparatus which concerns on 1st Embodiment of this invention. It is a front view of a meter unit. In the sound effect blowing apparatus which concerns on 1st Embodiment, it is a wave form diagram of the signal output to a several speaker, (a) shows the waveform of the signal to a 1st speaker, (b) shows to a 2nd speaker. The signal waveform is shown. It is a table | surface which shows the duty ratio of the frequency signal with respect to a 2nd speaker. FIG. 4 is a waveform diagram of signals output to a plurality of speakers in the sound effect sounding apparatus according to the second embodiment, where (a) shows a waveform of a signal to the first speaker, and (b) shows a waveform to the second speaker. The signal waveform is shown. In the sound effect blowing apparatus which concerns on 3rd Embodiment, it is a wave form diagram of the signal output to a several speaker, (a) shows the waveform of the signal to a 1st speaker, (b) shows to a 2nd speaker. The signal waveform is shown.

  Hereinafter, the present invention will be described according to preferred embodiments, but the present invention is not limited to the embodiments described below, and can be appropriately changed without departing from the spirit of the present invention.

  FIG. 1 is a circuit diagram showing an outline of a sound effect blowing apparatus according to the first embodiment of the present invention. A sound effect blowing device 1 shown in FIG. 1 is mounted on a vehicle and provides information to a vehicle occupant with an alarm sound (one of sound effects). Here, the provided information includes an approaching sound indicating the approach of another vehicle or the like, a door opening sound, and a seat belt non-wearing sound. Furthermore, the sound effect sounding apparatus 1 according to the first embodiment provides information having directionality by an alarm sound. For this reason, the sound effect sounding apparatus 1 according to the first embodiment is, for example, information having the approach direction of another vehicle, the presence direction of the opened door, and the direction of the seat where the seat belt is not attached. I will provide a.

  Note that the sound effect sounding device 1 is not limited to providing information having directionality by an alarm sound, vehicle operation sounds such as turn sounds to vehicle occupants, Information having directionality may be provided by other sound effects such as a sound that gives a feeling of comfort and a sound for guiding / supporting the behavior of a vehicle occupant. In the following description, it is assumed that the sound effect blowing device 1 provides information having directionality by an alarm sound.

  The sound effect sounding apparatus 1 according to the first embodiment includes a plurality of speakers SP, a control unit (control means) 10, a plurality of adder circuits 20, and a plurality of amplifiers 30. The plurality (two) of speakers SP1 and SP2 serve as alarm sound output sources.

  FIG. 2 is a front view of the meter unit. The meter unit M shown in FIG. 2 is provided in front of the driver's seat. The unit M is equipped with a vehicle instrument such as a speedometer, a tachometer, a fuel gauge, and a water temperature gauge, and a direction indicator, In addition, a liquid crystal display unit and the like are provided. Further, the meter unit M is provided with a first speaker SP1 and a second speaker SP2 on the back side thereof. These speakers SP1 and SP2 are provided at the respective end portions of the horizontally long meter unit M, and are thus spaced apart from each other in the vehicle traveling direction.

  Refer to FIG. 1 again. The control unit 10 generates a frequency signal for outputting an alarm sound from each of the first and second speakers SP1 and SP2, and is configured by, for example, a microcomputer. Moreover, the control part 10 has 1st-4th sound generator terminal SG1-SG4 (henceforth 1st-4th terminal SG1-SG4), and outputs the said signal from these terminals SG1-SG4. To do.

  A plurality (two) of adder circuits 20 add signals from the first to fourth terminals SG1 to SG4, and a first adder circuit 21 receives signals from the first and second terminals SG1 and SG2. The second addition circuit 22 adds the signals from the third and fourth terminals SG3 and SG4. These adder circuits 21 and 22 are constituted by analog adder circuits using general resistors, for example. The first and second terminals SG1 and SG2 form a first terminal group, and the third and fourth terminals SG3 and SG4 form a second terminal group.

  The plural (two) amplifiers 30 amplify the signals from the plural addition circuits 20 and output the amplified signals to the plural speakers SP. The first amplifier 31 amplifies the signals from the first addition circuit 21. The second amplifier 32 amplifies the signal from the second adder circuit 22 and outputs the amplified signal to the second speaker SP2.

  Further, in the sound effect sounding apparatus 1 according to the first embodiment, the control unit 10 transmits one piece of information (for example, one such as approach of another vehicle, door opening, seat belt not attached, etc.) to be transmitted to the vehicle occupant. Information with directionality. At this time, the control unit 10 executes the following control.

  That is, the control unit 10 transmits one piece of information to be transmitted to the vehicle occupant by an alarm sound from the plurality of speakers SP, and controls a frequency signal to the plurality of speakers SP to control at least one of the plurality of speakers SP. The alarm sound from the speaker SP is output while changing the sound pressure. As a result, the one piece of information described above is information having directionality that causes one of the plurality of speakers SP to be conscious. Details will be described below.

  FIG. 3 is a waveform diagram of signals output to the plurality of speakers SP in the sound effect sounding apparatus 1 according to the first embodiment. FIG. 3A shows the waveforms of signals to the first speaker SP1, and FIG. ) Shows the waveform of the signal to the second speaker SP2.

  First, as shown in FIG. 3A, the signal output to the first speaker (one speaker) SP1 is a total of 300 ms, of which time 0 to time 100 ms and time 200 ms to 300 ms. Is a frequency signal that alternately repeats the H level and the L level, and the L level signal is from 100 ms to 200 ms. The frequency of this frequency signal is 1600 Hz.

  On the other hand, as shown in FIG. 3B, the signal output to the second speaker (the other speaker) SP2 is a frequency signal of 300 ms as a whole. This frequency signal repeats H level and L level alternately. The frequency of the frequency signal is 1600 Hz, similar to the frequency signal to the first speaker SP1.

  Here, in the first embodiment, the alarm sound from the second speaker SP2 is output while the sound pressure changes. More specifically, the frequency signal output to the first speaker SP1 has a constant duty ratio of 50%, for example, and the frequency signal output to the second speaker SP2 is a signal whose duty ratio gradually decreases. Yes.

  FIG. 4 is a table showing the duty ratio of the frequency signal for the second speaker SP2. As shown in FIG. 4, the duty ratio is 50% in the time zone of 0 ms to 30 ms, 45% in the time zone of 30 ms to 60 ms, and the time zone of 60 ms to 90 ms among the frequency signals of 300 ms as a whole. At 40%. Thereafter, the duty ratio decreases by 5% every 30 ms, and becomes 5% in the time zone of 270 ms to 300 ms.

  Thus, in the first embodiment, the control unit 10 outputs a frequency signal whose duty ratio gradually decreases to the second speaker SP2 during the output period of the frequency signal in which the sound pressure to the first speaker SP1 is constant. Will be. As a result, the vehicle occupant becomes conscious toward the second speaker SP2, and the direction information is transmitted.

  Although the duty ratio is decreased in the above, the duty ratio may be increased. This is also because the consciousness is directed toward the second speaker SP2, and direction information is transmitted.

  Furthermore, in order to change the sound pressure, not only the duty ratio is changed, but the on-duty which is the duty ratio when the frequency signal is on (see FIG. 6 to be described later for illustration of the on-duty) may be changed. . In the following description, the duty ratio or on-duty is referred to as a sound pressure control ratio.

  Here, as is clear from the example shown in FIG. 3, in the second embodiment, two frequency signals of 100 ms each are output to the first speaker SP1, and a frequency signal of 300 ms is output to the second speaker SP2. It is output. For this reason, the output timing of the frequency signal differs between the two speakers SP1 and SP2, and the sound output time zone in which the alarm sound is output also differs. However, the present invention is not limited to this, and one frequency signal of 300 ms may be output to the first speaker SP1 so that the sound output time zones coincide with each other.

  When the sound output time zone is different, one frequency signal of 200 ms may be output to the first speaker SP1, or one frequency signal of 400 ms may be output to the second speaker SP2. It may be output and there are various methods.

  Furthermore, in the above, the frequency signals output to both speakers SP are both the same frequency at 1600 Hz, but the present invention is not limited to this, and may be different frequencies.

  In this manner, according to the sound effect sounding apparatus 1 according to the first embodiment, the sound signal from the at least one speaker SP of the plurality of speakers SP is controlled by controlling the frequency signal to the plurality of speakers SP. Output while changing. By changing the sound pressure in this way, the consciousness of the vehicle occupant can be directed to any one of the speakers, and direction information can be transmitted.

  In addition, a frequency signal with a constant sound pressure is output to the other speakers SP, and a frequency signal in which the sound pressure gradually decreases or increases is output to at least one speaker SP during this output period. As described above, when the sound pressure of the sound effect from the other speaker SP is constant and the sound pressure of the sound effect from the at least one speaker SP is gradually changed, the vehicle occupant changes to the speaker SP on the side where the sound pressure changes. The consciousness will be improved and direction information can be transmitted.

  In addition, there are two speakers SP, which are arranged in a meter unit M on which a vehicle instrument is mounted, and provide information that prompts the vehicle occupant with an alarm sound. A warning sound having direction information can be output from the front of the vehicle driver who wants to convey it quickly and accurately.

  Next, a second embodiment of the present invention will be described. The sound effect blowing device 1 according to the second embodiment is the same as that of the first embodiment, but part of the operation is different from that of the first embodiment. Hereinafter, differences from the first embodiment will be described.

  In the second embodiment, the control unit 10 outputs a plurality of frequency signals at the same timing to the plurality of speakers SP before transmitting one information having directionality by the alarm sound from the plurality of speakers SP. The basic sound is output from the speaker SP.

  FIG. 5 is a waveform diagram of signals output to a plurality of speakers SP in the sound effect sounding apparatus 1 according to the second embodiment. FIG. 5A shows a waveform of a signal to the first speaker SP1, and FIG. ) Shows the waveform of the signal to the second speaker SP2.

  First, as shown in FIGS. 5A and 5B, the signal after time 700 ms is the same as that shown in the first embodiment. The signal after 700 ms is information having directionality, and the sound effect sounding apparatus 1 according to the second embodiment has a plurality of signals by signals that form one cycle at 700 ms prior to transmitting such information. The basic sound is output from the speaker SP.

  The first half of the 700 ms cycle signal is a frequency signal that alternately repeats the H level and the L level, and the second half is an L level signal. As described above, the frequency signal is a signal for outputting a basic sound, and is output to both the first and second speakers SP1 and SP2 at the same timing. Further, the duty ratio of the frequency signal is, for example, 50%.

  Thus, in the second embodiment, the control unit 10 first outputs a basic sound from both of the two speakers SP. Then, the control part 10 outputs the same frequency signal as 1st Embodiment. As a result, the vehicle occupant first perceives that a warning is given by the basic sound, and then recognizes information having directionality by the warning sound. This can reduce the possibility of missed hearing when transmitting direction information.

  In the above, the basic sound output from the two speakers SP1 and SP2 may have different sound pressures, and the frequency signals for outputting the basic sound may have different frequencies.

  Thus, according to the sound effect blowing device 1 according to the second embodiment, direction information can be transmitted as in the first embodiment. In addition, an alarm sound having direction information can be output from the front of the vehicle driver who wants to transmit the alarm sound most quickly and accurately.

  Furthermore, according to the second embodiment, prior to transmitting one piece of information to the vehicle occupant, a frequency signal is output to the plurality of speakers SP at the same timing, and a basic sound is output from the plurality of speakers SP. . Thus, prior to transmitting one piece of information, the basic sound can be output from the plurality of speakers SP to make the occupant's consciousness turn to voice. This can reduce the possibility of missed hearing when transmitting direction information.

  Next, a third embodiment of the present invention will be described. The sound effect blowing device 1 according to the third embodiment is the same as that of the first embodiment, but part of the operation is different from that of the first embodiment. Hereinafter, differences from the first embodiment will be described.

  In the third embodiment, the control unit 10 controls the frequency signals to the two speakers SP and outputs the alarm sound from the two speakers SP while changing the sound pressure. More specifically, the control unit 10 sets the output timing (sound output time zone) of the frequency signal to the two speakers SP1 and SP2 and the frequency f of the frequency signal to be the same, and outputs to the first speaker (one speaker) SP1. The on-duty of the frequency signal is continuously decreased from a first predetermined value (for example, 100%) toward a second predetermined value (for example, 50%) smaller than the first predetermined value, and the second speaker (the other speaker). The on-duty of the frequency signal to SP2 is continuously increased from the second predetermined value toward the first predetermined value. This is because the sound can be moved by the Haas effect, and direction information can be transmitted.

  FIG. 6 is a waveform diagram of signals output to a plurality of speakers SP in the sound effect sounding apparatus 1 according to the third embodiment. FIG. 6A shows a waveform of a signal to the first speaker SP1, and FIG. ) Shows the waveform of the signal to the second speaker SP2.

  As shown in FIGS. 6A and 6B, signals output to the first speaker SP1 and the second speaker SP2 form one cycle at 700 ms. The first half of the 700 ms cycle signal is an 800 Hz (frequency f) frequency signal that alternately repeats H and L levels, and the second half is an L level signal. Further, the duty ratio of the frequency signal of 800 Hz is 50%.

Here, as shown in FIG. 6A, the first frequency signal P ₍₁₎ among the 800 Hz frequency signals output to the first speaker SP1 is turned on as shown in the enlarged waveform. The on-duty, which is the duty ratio at the time, is 100%. On the other hand, among the 800 Hz frequency signals, the last frequency signal P _(n1) has an on-duty of 50% (n1 is an integer of 2 or more) as shown in the enlarged waveform. Further, the frequency signal of 800 Hz existing between them gradually decreases in the range where the on-duty is less than 100% and more than 50%. That is, when the on-duty of the _i- th frequency signal (i is an integer of 2 or more) is P _{(i) on} , P _{(i−x−1) on} > P _{(i−x) on} > P _{(i− x + 1) on} . Note that x is an arbitrary positive integer that satisfies (i−x) ≧ 2.

  As described above, the control unit 10 sets the on-duty from the first predetermined value (for example, 100%) to the second predetermined value (for example, 50%) for the 800 Hz frequency signal output to the first speaker SP1. Decrease gradually. Note that the frequency when each pulse P is on when the on-duty is less than 100% is 62.5 kHz, which is within a range that can be perceived by the human ear.

Further, as shown in FIG. 6B, the frequency signal of 800 Hz (frequency f) output to the second speaker SP2 is the first frequency signal P ₍₁₎ as shown in the enlarged waveform. The on-duty is 50%, and the last frequency signal P _(n1) has an on-duty of 100%. Further, the frequency signal of 800 Hz existing between them gradually increases in the range where the on-duty is more than 50% and less than 100%. In other words, the on-duty P _{(i) on} of the i-th frequency signal is P _{(ix-1) on} <P _{(ix) on} <P _{(ix + 1) on} .

  As described above, the control unit 10 changes the on-duty from the second predetermined value (for example, 50%) to the first predetermined value (for example, 100%) for the 800 Hz frequency signal output to the second speaker SP2. Increase gradually. Similarly, for this signal, the frequency when each pulse P is on when the on-duty is less than 100% is 62.5 kHz, which is a frequency within a range that can be perceived by the human ear.

  As a result, the vehicle occupant perceives the sound as follows. That is, the vehicle occupant perceives sound on the first speaker SP1 side in the initial output of the alarm sound. Furthermore, the vehicle occupant feels that the perceived point of the sound moves to the second speaker SP2 side after the initial output of the alarm sound. In the case of perception in this way, the output timing (sound output time zone) of the frequency signal to the two speakers SP1 and SP2 and the frequency of the frequency signal (800 Hz in the example shown in FIG. 6) match (the match is the human ear). It is necessary to make it a concept that includes slight differences that are not recognized.

  Furthermore, in the above embodiment, the on-duty of the frequency signal to the first speaker SP1 is continuously decreased from the first predetermined value to the second predetermined value, and the on-duty of the frequency signal to the second speaker SP2 is decreased. It was increased continuously from the second predetermined value toward the first predetermined value. However, the duty ratio, which is the other sound pressure control ratio, is not limited to the on-duty, and may be as described above. That is, the control unit 10 continuously decreases the duty ratio of the frequency signal to the first speaker SP1 from the first predetermined value toward the second predetermined value, and also changes the duty ratio of the frequency signal to the second speaker SP2. The second predetermined value may be continuously increased from the first predetermined value. This is because the same effect can be obtained.

  Thus, according to the sound effect blowing device 1 according to the third embodiment, direction information can be transmitted as in the first embodiment. In addition, an alarm sound having direction information can be output from the front of the vehicle driver who wants to transmit the alarm sound most quickly and accurately.

  Furthermore, according to the third embodiment, the output timing of the frequency signal to the two speakers SP1, SP2 and the frequency of the frequency signal are the same, and the sound pressure control ratio of the frequency signal to the first speaker SP1 is changed from the first predetermined value. While gradually decreasing toward the second predetermined value, the sound pressure control ratio of the frequency signal to the second speaker SP2 is gradually increased from the second predetermined value toward the first predetermined value. Thereby, the vehicle occupant can perceive the sound on the first speaker SP1 side in the initial output of the alarm sound, and then feel that the perceived point of the sound moves to the second speaker SP2 side. Therefore, the sound can be given mobility and direction information can be transmitted.

  As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and modifications may be made without departing from the spirit of the present invention. You may combine the technique as described in a form. For example, by combining the techniques of the second embodiment and the third embodiment, a signal for outputting a basic sound prior to the signal shown in FIG. 6 may be output to each speaker SP.

  Moreover, in the said embodiment, although there are two speakers SP, three or more may be sufficient. In addition, each of the adder circuits 21 and 22 adds signals from two terminals SG, but may add signals from three or more terminals SG.

  In the above description, the frequency signal is output from one of the first terminal SG1 and the second terminal SG2 (first terminal group), and the frequency signal is output from one of the third terminal SG3 and the fourth terminal SG4 (second terminal group). However, the present invention is not limited to this, and the same frequency signal may be output from both sides and the waveforms may be superimposed by the first and second adder circuits 21 and 22, or both may be output if possible. Alternatively, different frequency signals may be output from the first and second adder circuits 21 and 22 to superimpose waveforms. In particular, when different frequency signals are output from both, sound variations can be increased by superimposing waveforms.

  In the above embodiment, the two speakers SP1 and SP2 are provided on the back side of the meter unit M, but may be on the front side. Moreover, you may arrange | position in the enclosure (housing | casing for speakers) attached to the outer case of the meter unit M.

1: Sound effect blowing device 10: Control unit 20: Adder circuit 30: Amplifier M: Meter units SG1 to SG4: Sound generator terminal SP: Multiple speakers SP1: First speaker (one speaker)
SP2: Second speaker (the other speaker)

Claims (3)

A sound effect blowing device that is mounted on a vehicle and provides information having directionality to the vehicle crew by sound effects,
A plurality of speakers as sound effect output sources;
Control means for generating a frequency signal for outputting a sound effect from each of the plurality of speakers,
The control means transmits one information to be transmitted to the vehicle occupant by sound effects from the plurality of speakers , and a frequency at which sound pressure gradually decreases or increases with respect to at least one of the plurality of speakers. A signal is output, and during this output period, a frequency signal in which a sound pressure is constant is output to other speakers other than the at least one speaker, and a frequency signal in which a silence period is interposed is output . A sound effect sounding device characterized in that the information is information having a direction for directing consciousness to the at least one speaker. The control means outputs the frequency signal to the plurality of speakers at the same timing and transmits the basic information from the plurality of speakers before transmitting the one information to the vehicle occupant by sound effects from the plurality of speakers. The sound effect sounding device according to claim 1, wherein a sound is output. The plurality of speakers are two, and are arranged in a meter unit on which a vehicle instrument is mounted,
The sound effect sounding device according to claim 2 , wherein information for prompting a vehicle occupant to be alerted by an alarm sound is provided.

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