JP6498940B2 - 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.

Sound effect sounding apparatus according to the present invention is mounted on a vehicle, a sound effect sounding device that provides information having a directionality by the sound effect to the vehicle crew, two as the output source of the sound effect And a control means for generating a frequency signal for outputting a sound effect from each of the two speakers, wherein the control means transmits one piece of information transmitted to a vehicle occupant to the two speakers. while transmitting the sound effect from the after starting the output of the frequency signal against only one of the speaker of the two speakers, the pair to a frequency signal to the other speaker, except for the one speaker Then, after stopping the output of the frequency signal to the one speaker, the output signal of both frequency signals is stopped by stopping the output of the frequency signal to the other speaker. The timing is continuously, and wherein the gradually increasing or decreasing the frequency of the continuous signal over the time of output ends from the output start time of the continuous signal which is both a frequency signal to the continuous.

According to the sound effect sounding apparatus according to the present invention, the output end of the frequency signal to one of the speakers, is before the output end of the frequency signal to the other speaker. As a result, even if the sound effect from one speaker is stopped, there is a time zone in which the sound effect is output from the other speaker, and the vehicle crew is conscious of the other speaker during this time zone. It will be. Therefore, direction information can be transmitted. In addition, after the output of the frequency signal is started only for one speaker, the output of the frequency signal is started for the other speaker before the output of the frequency signal is stopped. For this reason, the sound effect is output from one speaker before the sound effect is output from the other speaker. Therefore, sound effects are output in the order of only one speaker, both speakers, and only the other speaker, and the sound moves from one speaker to the other speaker for the vehicle occupant. You can perceive as if you are doing. Therefore, direction information can be transmitted. Furthermore, the output timing of the frequency signal to one speaker and the other speaker is made continuous, and the frequency of the continuous signal is gradually increased or decreased from the start of output of the continuous signal which is both of these continuous frequency signals to the end of output. Let For this reason, the sound effect moves from one speaker to the other speaker while the pitch gradually increases or decreases, and the vehicle occupant perceives such a sound effect to board the vehicle. The consciousness of the worker can be directed to the other speaker. Therefore, direction information can be transmitted.

  In the sound effect sounding apparatus according to the present invention, it is preferable that the control means changes the frequency of the continuous signal step by step with a constant change amount.

  According to this sound effect blowing device, since the frequency of the continuous signal is changed step by step with a constant change amount, the vehicle occupant knows the sound effect whose pitch changes due to the constant frequency change. It will be. Thereby, it is possible to provide the vehicle occupant with a sound of a strange scale that cannot be heard, rather than providing a sound effect of a familiar scale that changes to “doremifasolaside” or the like. Therefore, the consciousness of the vehicle occupant can be further directed toward the other speaker, and direction information can be transmitted.

  Further, in the sound effect blowing device according to the present invention, the control means is a period in which output timings of the frequency signal to the one speaker and the frequency signal to the other speaker of the continuous signal overlap. It is preferable that both frequency signals have the same frequency.

  According to this sound effect blowing device, since both frequency signals are set to the same frequency in the period in which the output timings of the frequency signal to one speaker and the frequency signal to the other speaker overlap, both in the overlapping period The same sound is output from the other speaker, and the vehicle occupant can be recognized as if the sound effect smoothly moved from one speaker to the other speaker.

  Further, in the sound effect sounding device according to the present invention, the two speakers are arranged in a meter unit on which a vehicle instrument is mounted, and provide information for calling attention to a vehicle occupant by an alarm sound. preferable.

  According to this sound effect blowing device, the two speakers are arranged in a meter unit on which a vehicle instrument is mounted, and provide information that prompts the vehicle occupant to be alerted by 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.

  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 frequency of a continuous signal. In the sound effect blowing apparatus which concerns on 2nd Embodiment, it is a wave form diagram of the signal output to a several speaker, (a) shows the waveform of a 1st speaker, (b) shows the waveform of a 2nd speaker. Yes.

  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 blowing device 1 according to the first embodiment is, for example, information having the approach direction of other vehicles, 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 uses the alarm sound from the plurality of speakers SP to obtain one piece of information (for example, 1 such as approach of another vehicle or the like, door opening and seat belt not attached). )) To the vehicle crew. At this time, the control unit 10 sets one piece of information transmitted to the vehicle crew as information having directionality as follows.

  That is, the control unit 10 sets the output end time of the frequency signal to at least one speaker SP among the plurality of speakers SP before the output end time of the frequency signal to other speakers SP excluding at least one speaker SP. . Thereby, even if the sound effect from at least one speaker SP is stopped, there is a time zone in which the sound effect from the other speaker SP is output, and in this time zone, the vehicle crew member Awareness will turn.

  More specifically, (i) First, the control unit 10 starts outputting a frequency signal only to at least one speaker SP among the plurality of speakers SP when outputting an alarm sound. (Ii) Next, before stopping the output of the frequency signal, the control unit 10 starts outputting the frequency signal to other speakers SP excluding at least one speaker SP. (Iii) Next, the control unit 10 stops the output of the frequency signal to at least one speaker SP. (Iv) Finally, the control unit 10 also stops the output of frequency signals to other speakers SP.

  As a result, the alarm sound is first output from at least one speaker SP, and is finally output only from the other speaker SP. As a result, the control unit 10 causes the vehicle occupant to perceive the alarm sound as if it moved from at least one speaker SP to another speaker SP, and sets the information as having information that directs consciousness to the other speaker.

  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 FIGS. 3A and 3B, the signals output to the first speaker (one speaker) SP1 and the second speaker (the other speaker) SP2 are signals of 800 ms as a whole. It has become. Among these, as shown in FIG. 3A, the signal output to the first speaker SP1 is a frequency signal in which the first 320 ms alternates between the H level and the L level, and the latter 480 ms is the L level. It is a signal. On the other hand, as shown in FIG. 3B, the signal output to the second speaker SP2 is a frequency signal in which the first 400 ms alternates between H level and L level, and the latter 400 ms is an L level signal. It has become.

  In addition, as shown in FIG. 3A, the control unit 10 outputs the frequency signal as described above to the first speaker SP1 at time 0 ms to time 320 ms, time 800 ms to time 1120 ms, and the like. .

  As shown in FIG. 3B, the control unit 10 outputs the frequency signal as described above to the second speaker SP2 at time 240 to time 640 ms, time 1040 ms to time 1440 ms, and the like.

  The control unit 10 outputs frequency signals to the first speaker SP1 and the second speaker SP2 in a time zone as shown in FIG. Thereby, when outputting the alarm sound, the control unit 10 outputs the frequency signal only to the first speaker SP1, and then outputs the frequency signal to the second speaker SP2 before stopping the output of the frequency signal to one speaker. On the other hand, the frequency signal is output, and then the output of the frequency signal to the first speaker SP1 is stopped and the frequency signal is output continuously.

  (V) Furthermore, the control unit 10 gradually increases the frequency of the continuous signal from the start of output of the continuous signal, which is a continuous frequency signal, to the end of output. Here, in the example shown in FIG. 3, the time when the continuous signal output starts is 0 ms (800 ms), and the time when the continuous signal output ends is time 640 ms (1440 ms).

  FIG. 4 is a table showing frequencies of continuous signals. As shown in FIG. 4, the control unit 10 increases the frequency of the continuous signal stepwise by 200 Hz (a constant change amount) in increments of 80 ms, for example.

  More specifically, the control unit 10 outputs a frequency signal of 1600 Hz to the first speaker SP1 from time 0 ms to time 80 ms. In addition, the control unit 10 outputs a frequency signal of 1800 Hz from time 80 ms to time 160 ms and outputs a frequency signal of 2000 Hz from time 160 ms to time 240 ms to the first speaker SP1.

  Further, the control unit 10 outputs a frequency signal of 2200 Hz to both the first speaker SP1 and the second speaker SP2 from time 240 ms to time 320 ms.

  Next, the control unit 10 outputs a frequency signal of 2400 Hz to both of the second speakers SP2 from time 320 ms to time 400 ms. Thereafter, the control unit 10 outputs a frequency signal of 2600 Hz from time 400 ms to time 480 ms and outputs a frequency signal of 2800 Hz from time 480 ms to time 560 ms to the second speaker SP2. Then, the control unit 10 outputs a frequency signal of 3000 Hz to the second speaker SP2 at time 560 ms to time 640 ms, which is the last of the continuous signal.

  As described above, the control unit 10 gradually increases the frequency of the continuous signal from the start of output of the continuous signal, which is a continuous frequency signal, to the end of output. As a result, the vehicle occupant is made to recognize the warning sound that moves from the first speaker SP1 to the second speaker SP2 while the pitch gradually increases. Therefore, the consciousness of the vehicle occupant can be directed to the second speaker SP2, and direction information can be transmitted.

  Here, the control unit 10 outputs the same frequency signal of 2200 Hz to both the first speaker SP1 and the second speaker SP2 from time 240 ms to time 320 ms. That is, in the overlap period in which the output timings of both frequency signals overlap among continuous signals, the frequencies of both frequency signals are the same. Accordingly, the vehicle occupant can be made to recognize the alarm sound so as to smoothly move from the first speaker SP1 to the second speaker SP2.

  Thus, according to the sound effect sounding apparatus 1 according to the first embodiment, the output end point of the frequency signal for at least one speaker SP is set before the output end point of the frequency signal for the other speaker SP. . Thereby, even if the sound effect from at least one speaker SP is stopped, there is a time zone in which the sound effect from the other speaker SP is output, and in this time zone, the vehicle crew member Awareness will turn. Therefore, direction information can be transmitted.

  In addition, after the output of the frequency signal is started only for at least one speaker SP, the output of the frequency signal is started for the other speaker SP before the output of the frequency signal is stopped. For this reason, the sound effect is output from at least one speaker SP before the sound effect is output from the other speaker SP. Therefore, the sound effect is output in the order of only at least one speaker SP, only a plurality of speakers, and only other speakers SP, and the at least one speaker SP to another speaker SP is output to the vehicle occupant. The sound can be perceived as if the sound is moving toward. Therefore, direction information can be transmitted.

  In addition, the output timing of the frequency signal to one speaker SP and the other speaker SP is made continuous, and the frequency of the continuous signal gradually increases from the start of output of the continuous signal, which is both of these continuous frequency signals, to the end of output. Or reduce. For this reason, the sound effect moves from the first speaker SP1 to the second speaker SP2 while the pitch gradually increases or decreases, and by making the vehicle occupant perceive such a sound effect, The consciousness of the vehicle occupant can be directed to the second speaker SP2. Therefore, direction information can be transmitted.

  Further, since the frequency of the continuous signal is changed step by step with a constant change amount, the vehicle occupant knows a sound effect whose pitch changes due to the change of the constant frequency. Thereby, it is possible to provide the vehicle occupant with a sound of a strange scale that cannot be heard, rather than providing a sound effect of a familiar scale that changes to “doremifasolaside” or the like. Therefore, the consciousness of the vehicle occupant can be further directed to the second speaker SP2, and direction information can be transmitted.

  Moreover, in order to make both frequency signals into the same frequency in the period (time 240ms-time 320ms in FIG. 3) in which the output timing of the frequency signal to the first speaker SP1 and the frequency signal to the second speaker SP2 overlaps, In the overlap period, the same sound is output from both speakers SP, and the vehicle occupant can be recognized as if the sound effect smoothly moved from the first speaker SP1 to the second speaker SP2.

  In addition, the two speakers SP are arranged in the meter unit M on which the vehicle meter is mounted, and provide the information prompting the vehicle occupant with the warning sound, so that the warning sound is transmitted most quickly and accurately. An alarm sound having direction information can be output from the front of the driver of the vehicle.

  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, similarly to the first embodiment, the control unit 10 (i) first outputs a frequency signal only to at least one speaker SP among the plurality of speakers SP when outputting an alarm sound. (Ii) Next, the control unit 10 outputs a frequency signal to other speakers SP excluding at least one speaker SP before stopping the output of the frequency signal. (Iii) Next, the control unit 10 stops the output of the frequency signal to at least one speaker SP. (Iv) Finally, the control unit 10 also stops the output of frequency signals to other speakers SP.

  Furthermore, in the second embodiment, unlike the first embodiment, the frequency of the continuous signal is not changed, and the sound pressure of the alarm sound from the two speakers SP1 and SP2 and the frequency f of the frequency signal to the two speakers SP1 and SP2 are set. The same.

  More specifically, the control unit 10 sets the sound pressure of the alarm sound from the two speakers SP1 and SP2 and the frequency f of the frequency signal to the two speakers SP1 and SP2 to be the same, and outputs the signal to the first speaker SP1. While overlapping the output timing and the output timing of the frequency signal to the second speaker SP2, the output timing of the signal to the second speaker SP2 is a predetermined time (for example, 100 ms) from the output timing of the frequency signal to the first speaker SP1. Delay more. Thereby, in the second embodiment, information having directionality is provided.

  FIG. 5 is a waveform diagram of signals output to the plurality of speakers SP in the sound effect sounding apparatus 1 according to the second embodiment. FIG. 5A shows the waveform of the first speaker SP1, and FIG. The waveform of 2 speaker SP2 is shown.

  As shown in FIGS. 5A and 5B, the signals output to the first speaker SP1 and the second speaker SP2 form one cycle at 400 ms. The first half of the 400 ms cycle signal is a 2 kHz (frequency f) frequency signal that alternately repeats H and L levels, and the second half is an L level signal. The duty ratio of the frequency signal of 2 kHz is 50%.

  Here, as shown in FIGS. 5A and 5B, the output start point of the 2 kHz frequency signal output to the second speaker SP2 is 2 kHz output to the first speaker SP1. The output timing (sound output time zone) is delayed from time 100 ms to time 300 ms. On the other hand, the sound output time zone of the first speaker SP1 is from time 0 ms to time 200 ms. As described above, the sound output time zone (output timing) of the second speaker SP2 is equal to or longer than the sound output time zone (output timing) of the first speaker SP1 while the sound output time zone (output timing) overlaps. In a delayed state. Note that the output time for outputting sound from both speakers SP is, for example, 200 ms, which is the same.

  As a result, the vehicle occupant perceives the sound as follows. That is, the vehicle occupant perceives sound on the first speaker SP1 side at the initial output of the alarm sound, as in the first embodiment. 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. As described above, when perceiving in this way, the sound pressure of the alarm sound from the two speakers SP1 and SP2 and the frequency f of the frequency signal (2 kHz in the example shown in FIG. 4) coincide ( It is necessary to make it a concept that includes slight differences that are not recognized by the ear.

  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, the sound pressure of the alarm sound and the frequency signal frequency to the two speakers SP1 and SP2 are the same, the output timing of the frequency signal to the first speaker SP1 and the second speaker SP2 While overlapping the output timing of the frequency signal, the output timing of the frequency signal to the second speaker SP2 is delayed by a predetermined time or more than the output timing of the frequency signal to the first speaker SP1. 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, in the above embodiment, the number of speakers SP is two, but may be three or more. 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.

  Furthermore, as shown in the above (i) and (ii), the sound effect sound device 1 according to the first and second embodiments first outputs a frequency signal only to at least one speaker SP, and then the other. The frequency signal is output to the speaker SP. However, the present invention is not limited to this, and the output start time point of the frequency signal may be the same for at least one speaker SP and the other speaker SP, or the output start time point of the frequency signal to the other speaker SP is at least one. It may be earlier than the output start time of the frequency signal to the two speakers SP. Even in such a configuration, by making the output end point of the sound effect the same as in the first and second embodiments described above, the effect from the other speaker is stopped after the sound effect from at least one speaker is stopped. This is because there is a time zone in which sound is output, and information with directionality can be transmitted.

  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 (control means)
20: Adder circuit 30: Amplifier M: Meter units SG1 to SG4: Sound generator terminal SP: Plural speakers SP1: First speaker (one speaker)
SP2: Second speaker (the other speaker)

Claims (4)

A sound effect blowing device that is mounted on a vehicle and provides information having directionality to the vehicle crew by sound effects,
Two speakers as sound effect output sources,
Control means for generating a frequency signal for outputting a sound effect from each of the two speakers,
The control means starts with transmitting the sound effect, the output of the frequency signal against only one speaker among the two loudspeakers one information transmitted to the vehicle crew from the two loudspeakers after, starts outputting the frequency signals to pairs to the other speakers, except for the one speaker, then, after stopping the output of the frequency signal of the to one of the speakers, the frequency signal to the other speaker The output timing of both frequency signals is made continuous by stopping the output of, and the frequency of the continuous signal is gradually increased or decreased from the start of output of the continuous signal, which is both of these continuous frequency signals, to the end of output. A sound effect blowing device. The sound effect blowing apparatus according to claim 1 , wherein the control means changes the frequency of the continuous signal step by step with a constant change amount. The control means sets both frequency signals to the same frequency during a period in which output timings of the frequency signal to the one speaker and the frequency signal to the other speaker overlap among the continuous signals. The sound effect blowing device according to claim 1 or 2 . The two speakers are arranged in a meter unit on which a vehicle meter is mounted,
The sound effect sounding device according to any one of claims 1 to 3 , wherein information for prompting a vehicle occupant to be alerted by an alarm sound is provided.

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