JPH08292785A - Real engine sound reproducing device - Google Patents

Abstract

PURPOSE: To improve a digital sound because when, for example, a person depresses the accelerator provided at the simulation driving seat of a racing car as a game machine, the digital sound made to resemble to an engine sound is reproduced according to the depressing amount and then the person can taste a feeling like driving the racing car but the digital sound has not been able to reproduce the power had by the sound of a real car and the taste of the highly individual engine sound of the real car which is different in the kinds of the real cars. CONSTITUTION: The analog voltage signal taken in by a voltage detector 33 is converted into a digital voltage signal by an A/D conversion circuit 35. In a ROM 41, sections determined by subdividing magnitudes of the digital voltage signals previously are stored and real engine sounds having the speeds of revolutions corresponding to magnitudes of digital voltage signals which are almost determined by sections are recorded as digital signals and then the digital signals are stored for every section in corresponding areas. A control device 39 reads out the section corresponding to the digital signal and reads out the digital signal stored in the area corresponding to the section. Then, the read out digital signal of an engine is converted into an analog signal by a D/A conversion circuit 53 and the analog signal is amplified by an amplifier to be reproduced as a real engine sound in a speaker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for reproducing engine sounds of automobiles, motorcycles, etc., for example, according to the depression amount of an accelerator provided in a driver's seat for simulation.

[0002]

2. Description of the Related Art A device for reproducing an engine sound of an automobile in accordance with, for example, the depression amount of an accelerator provided in a driver's seat for simulation has been conventionally used in a playground or the like. In other words, simulation of a race car as a game machine provided in the playground When you depress the accelerator provided in the driver's seat, a digital sound is reproduced in a manner similar to the engine sound according to the amount of depression, and the race car is being operated. You can feel like.

[0003]

However, the digital sound reproduces the distinctive taste of the engine sound of an actual vehicle (called the actual vehicle sound) and the unique engine sound that differs depending on the model of the actual vehicle (called the actual vehicle). I couldn't do it. Such a problem also occurs when playing engine sounds of not only an automobile but also a motorcycle, an airplane, etc., and trying to feel like actually driving a motorcycle, an airplane, etc. The present invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a real engine sound reproducing device that allows the player to feel as if he / she was actually driving an automobile, a motorcycle, or an aircraft.

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 has means for taking in an analog voltage signal and A / D conversion for converting the taken-in analog voltage signal into a digital voltage signal. The circuit and the section that is determined by subdividing the magnitude of the digital voltage signal in advance are stored, and the actual engine sound of the rotation speed corresponding to the magnitude of the digital voltage signal that is roughly determined by the section is recorded and recorded as a digital signal. Storage means for storing in a region corresponding to each section, a controller for reading out a section corresponding to the digital voltage signal from the A / D conversion circuit, and reading out a digital signal stored in the area corresponding to the section, and storing The D / A conversion circuit for converting the digital signal of the engine sound read from the means into an analog signal, and the analog signal from the D / A conversion circuit are used for the actual engine. Reproducing means for reproducing the emission sound, the real engine sound reproducing apparatus, characterized in that with a.

According to a second aspect of the present invention, the device is used in the interior of an automobile in which a user of the device is riding, the power source of the entire device is taken from a cigar socket in the interior of the automobile, and the analog voltage signal is The actual engine sound reproducing device according to claim 1, wherein the power source voltage from the cigar socket is used.

According to a third aspect of the present invention, the device is used in the interior of an automobile in which a user of the device is seated, and the reproducing means for reproducing the actual engine sound includes an FM transmitter and a radio signal from the FM transmitter. 2. The real engine sound reproducing device according to claim 1, wherein the real engine sound reproducing device is configured to have a car stereo in the interior of the automobile capable of receiving.

According to a fourth aspect of the present invention, the device is used in a driver's seat of a vehicle simulation, and the analog voltage signal changes in accordance with the amount of depression of an accelerator provided in the driver's seat. The real engine sound reproducing device according to claim 1, wherein the real engine sound reproducing device is obtained in correspondence with.

According to a fifth aspect of the present invention, the analog voltage signal is obtained corresponding to a resistance value of a variable resistor which is changed by moving a knob provided on the main body of the apparatus. It is a real engine sound reproducing device.

According to a sixth aspect of the present invention, there is provided the actual engine sound reproducing apparatus according to the first aspect, wherein the storage means is unitized for each vehicle type of an actual vehicle and is externally attached to the apparatus.

According to a seventh aspect of the present invention, the apparatus further includes a model engine corresponding to a vehicle type of an actual vehicle, the model engine having a motor for driving a drive portion of the model engine, and the motor having an analog voltage signal or The actual engine sound reproducing device according to claim 1, further comprising: a motor controller that controls according to a digital voltage signal.

[0011]

According to the present invention, the analog voltage signal is taken in, converted into the digital voltage signal, the section corresponding to the digital voltage signal is read out, and the actual engine sound stored in the area corresponding to the section is read. Read out the digital signal of. The read digital signal is converted into an analog signal, and an actual engine sound of a predetermined rotation speed is reproduced by this analog signal. Then, if the magnitude of the analog voltage signal changes, the actual engine sound of the rotational speed corresponding to the magnitude is reproduced.

According to the second aspect of the present invention, the device is used in the interior of an automobile in which a user of the device gets in. Power for the entire device is taken from a cigar socket inside the vehicle. The analog voltage signal is the power supply voltage from the cigar socket. Since this power supply voltage changes according to the engine speed of the automobile in which the user gets in, for example, an ordinary passenger car, the recorded actual engine sound, for example, of a race car The engine sound is played.

According to the third aspect of the present invention, the device is used in the interior of an automobile in which a user of the device gets in. Then, the car stereo in the room of the automobile receives the radio signal from the FM transmitter constituting the reproducing means, and reproduces the actual engine sound, for example, the actual engine sound of the race car.

According to a fourth aspect of the invention, the device is used in a driver seat of a vehicle simulation. Then, an analog voltage signal is obtained corresponding to the resistance value of the variable resistor that changes according to the depression amount of the accelerator provided in the driver's seat, and the actual engine sound of a predetermined rotation speed is reproduced by this analog signal. . Then, if the magnitude of the analog voltage signal changes, the actual engine sound of the rotational speed corresponding to the magnitude is reproduced.

According to the fifth aspect of the invention, the resistance value of the variable resistor is changed by moving the knob provided on the apparatus body. An analog voltage signal corresponding to the resistance value reproduces an actual engine sound of a predetermined rotation speed by the analog signal. Then, if the magnitude of the analog voltage signal changes, the actual engine sound of the rotational speed corresponding to the magnitude is reproduced.

According to the sixth aspect of the invention, the storage means unitized for each vehicle type of the actual vehicle stores the actual engine sound of the vehicle type as a digital signal, which is externally mounted on the apparatus. As a result, it is possible to select which vehicle type of engine sound is to be reproduced. Also, it is possible to store a large number of vehicle types and reproduce them according to taste.

According to the seventh aspect of the invention, the motor controller controls the motor in accordance with the analog voltage signal or the digital voltage signal to drive the driving portion of the model engine. The user of the device can enjoy the movement of the model engine corresponding to this engine sound along with the actual engine sound.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is an overall external view of the actual engine sound reproducing apparatus of this embodiment.

The power source of the apparatus main body 1 is AC from a household power source.
-Can also be taken via the DC adapter 3 to DC-D from the cigar socket 5 for the cigarette lighter in the car compartment
It can also be taken via the C converter 7.

The rotation speed of the actual engine sound to be reproduced is determined by the analog voltage signal taken in. It is assumed that the analog voltage signal changes the resistance value of a variable resistor (not shown) by moving a knob 9 provided on the apparatus body 1, and an analog voltage signal having a magnitude corresponding to the resistance value is obtained. Can or
A DC power supply voltage taken from the cigar socket 5 via the DC-DC converter 7 can be used as an analog voltage signal. This power supply voltage changes according to the engine speed of the vehicle (the vehicle in which the user uses the device).

As a storage means for recording the actual engine sound and storing it as a digital signal, a sound cassette 11 unitized so as to be mounted on the apparatus main body from the outside is used. These sound cassettes 11 are provided depending on the vehicle type of the actual vehicle, that is, Harley, Porsche, Ferrari 11-1, 11-2, 11-.
There are three. There is also an airplane sound 11-4.

A plurality of reproducing means for reproducing the actual engine sound by the analog signal obtained by converting the digital signal of the engine sound read out from the storage means are provided. First of all, the car stereo 15 in the cabin of the automobile in which the user who uses the device receives a radio signal from the FM transmitter 13 connected to the device body 1 via an output terminal (not shown), and The engine sound of what is played. In addition, the device body 1
On the other hand, the headphones 17 are connected via an output terminal (not shown). Alternatively, a stereo set 19 connected to the device body 1 via an output terminal (not shown)
Is. Further, a speaker 21 with an amplifier is provided to the apparatus body 1 via an output terminal (not shown).

At the center of the apparatus main body 1, a model engine 23
Is formed with a mounting hole 25 for mounting.
That is, the model engine 23 is attached via the attachment 27 attached to the attachment hole 25. The model engine 23 has a plurality of models 23-1, 23-
2 and 23-3, each of which is attached via a dedicated attachment 27-1, 27-2, 27-3.

The model engine 23 has a built-in motor, and has a structure for driving a drive portion of the model engine 23, such as a cam shaft or a timing belt. This motor is controlled by a motor controller (not shown) according to an analog voltage signal or a digital voltage signal. Then, for example, the analog voltage signal or the digital voltage signal becomes large, the engine sound having a large rotation speed is reproduced, and the driving portion of the model engine 23 is driven quickly.

The model engine 23 rotates together with the attachment 27. This rotation is also performed by the motor. The motor for performing this rotation can be built in the apparatus body 1, the model engine 23, or the attachment 27.

Further, in addition to the output terminal for the reproducing means, the apparatus main body 1 is provided with an output terminal (not shown) for connecting another electronic device or the like. Other electronic devices include a tachometer 29 or a family computer 31 that shows a large number of revolutions as the digital voltage signal increases.

FIG. 2 is a block diagram of an essential part of the apparatus main body shown in FIG.

As means for taking in an analog voltage signal,
For example, a voltage detector 33 for detecting a DC power supply voltage obtained via the DC-DC converter 7 is provided. As the A / D conversion circuit 35 for converting the captured analog voltage signal into a digital voltage signal, an A / D converter (A
D7820) is used. As an input board for digital voltage signals, PIO (parallel I / O) (TMPZ84
C015BF built-in) 37 is used. 8 of PIO37
The upper 4 BITs out of the BITs are for controlling the A / D converter. The lower 4 bits are used for bank switching of an engine sound data ROM described later.

The CPU 39, which is a control device, includes a general-purpose 8BITCPU (TMPZ84C015) with a built-in peripheral.
BF) is used.

ROM pack 41 and RA are used as storage means.
M43 is used. As shown in FIG. 3, the address map represented by the hexadecimal numbers of these storage means includes R
The OM includes a program ROM area 45, an engine sound data ROM area 47 that stores an actual engine sound as a digital signal, an unused area 49, and a program R.
An AM area 51 is provided. Further, the engine sound data ROM 47 needs a large capacity in order to accurately reproduce the actual engine sound, and therefore bank switching is performed (see FIG. 3).

As the output board for outputting the digital signal of the engine sound read from the storage means, the PIO
(Parallel I / O) (Built-in TMPZ84C015BF)
37 is used.

A D / A converter (AD7523) is used as the D / A conversion circuit 53 for converting the output digital signal into an analog signal.

The amplifier 55 and the speaker 57 are, for example, car stereos. A CTC (counter timer circuit) 59 functions such as timing each circuit.

Next, as shown in FIG. 4 and FIG.
The analog voltage signal (solid line 61 in FIG. 4) is detected by sampling at a sampling period of 50 mS, and the size of the detected voltage signal is quantized in 256 ways with 8 BIT and converted into a digital signal. . The magnitude of this digital voltage signal (usually 5 V) is 25
The 6 types are divided into groups and are grouped into 22 sections (the left side “voltage subdivision section” in FIG. 5), and thus subdivided into 22 sections.

As shown in FIG. 5, an address where engine sound data is stored (the right "engine sound data storage address" in FIG. 5) is displayed in each section of 22. The actual rotation speed (for example, the maximum rotation speed) corresponding to the magnitude of the digital signal (for example, the top division in FIG. 5 defines the largest digital signal) that is roughly determined by each division by these addresses. The area in which the engine sound of is stored is shown. That is, the actual engine sound at that speed is recorded, the waveform of that sound is digitized, and the area stored as a digital signal is shown. The actual digitization of the engine sound will be described with reference to FIG.

That is, an actual engine sound at a certain rotation speed is recorded and captured as an analog signal by a microphone (not shown). The captured analog signal is
Detected by sampling at a sampling frequency of 11.025 KHz, the size of the detected voltage signal is quantized in 256 ways with 8 BIT and converted into a digital signal. That is, the maximum amplitude L in the figure is quantized in 256 ways. Such a digitization method is based on P
It is called a CM (pulse code modulation) method.

In this way, after the actual engine sound at a certain rotation speed is converted into a digital signal, the area indicated by the address displayed in one of the 22 sections is displayed.
Remembered. Further, similarly for the other 22 categories, engine sounds of similar rotational speeds are stored.

Now, the control operation of reading out the section corresponding to the digital voltage signal in FIGS. 7 and 8 and reading out the digital signal stored in the area indicated by the address displayed in the section will be described.

As shown in FIG. 7, when power is supplied to the device, for example, the CPU is first initialized (S1) and waited for a sufficient time (S2) to prevent malfunction. Next, CT
C is initialized (S3) and PIO is initialized (S
4). Further, the engine sound is initialized (S5), and becomes the engine sound of the lowest rotation speed, for example. And the control is
The engine is idling (S6).

From this idling state, for example, an interrupt is performed at a predetermined cycle, and the control procedure shown in FIG. 8 is performed. That is, while the current engine sound is being reproduced (S7), the address of the area in which the engine sound to be reproduced next is stored is calculated (S8). That is,
It is determined whether or not the digital voltage signal has changed (S
9) If there is no change, the interrupt ends. If it has changed, the section corresponding to the digital voltage signal is read (S10). It is determined whether or not the read section is the same as the previous section (S11), and if it is the same, the interrupt ends. If they are not the same, the digital signal stored in the area indicated by the address displayed in the read section is read, the engine sound is reproduced (S12), and the interruption ends.

As described above, according to this embodiment,
By reproducing the actual engine sound, it is possible to reproduce the power of the actual engine sound of a car or aircraft, and also depending on the type of car such as Harley, Porsche, Ferrari, or aircraft. You can reproduce the unique taste of the engine sound.

In addition, according to the engine speed of an ordinary passenger car on which a user gets in, a recorded actual engine sound, for example, an engine sound of an automobile of a vehicle type such as Harley, Porsche, Ferrari or an engine sound of a race car is generated. As it is played back, you can feel as if you were driving a race car while driving a normal passenger car.

Further, since the car stereo 15 in the interior of the automobile receives the radio signal from the FM transmitter 13 which constitutes the reproducing means and reproduces the actual engine sound,
For example, Harley without changing the wiring inside the car
You can enjoy the actual engine sounds of cars of Porsche, Ferrari, etc. or the actual engine sounds of race cars.

Further, by moving the knob 9 provided on the main body of the apparatus, an actual engine sound of an arbitrary number of revolutions can be reproduced, and a feeling of actually driving a real car can be felt. You can

Further, it is possible to freely select which of the many car models such as the Harley, Porsche, Ferrari and the like to reproduce the actual engine sound according to the taste.

In addition to the actual engine sound, it is possible to enjoy the movement of the model engine 23 corresponding to the engine sound, that is, the rotation of the entire model engine 23 and the movement of the drive portion such as the cam shaft.

Although the apparatus of the above embodiment is used in the interior of the automobile of the user, it may be used in the driver's seat of the automobile simulation in other embodiments. That is, it is possible to reproduce the actual engine sound of the number of revolutions according to the depression amount of the accelerator provided in the driver's seat of the automobile simulation. This makes it possible to feel as if you were actually driving a real car in a car simulation.

[0049]

As described above, according to the inventions of claims 1 to 7, by reproducing the actual engine sound, the force of the actual engine sound of an automobile, a motorcycle, an airplane, etc., and further, Real cars, motorcycles,
Alternatively, it is possible to reproduce the unique taste of engine sound that differs depending on the type of aircraft.

Further, by reproducing the actual engine sound of the number of revolutions according to the magnitude of the analog voltage signal, it is possible to feel as if an automobile, motorcycle, aircraft or the like is actually being operated.

According to the second aspect of the present invention, the recorded actual engine sound, for example, the engine sound of a race car is reproduced in accordance with the number of revolutions of the engine of the automobile in which the user gets in, for example, an ordinary passenger car. Therefore, you can feel as if you were driving a race car while operating a normal passenger car.

According to the third aspect of the present invention, the car stereo in the vehicle interior receives the radio signal from the FM transmitter constituting the reproducing means, and the actual engine sound is reproduced. You can enjoy the actual engine sound, for example, the actual engine sound of a race car without changing the wiring, and feel like you are driving a race car.

Further, according to the invention of claim 4, it is possible to reproduce the actual engine sound of the number of revolutions according to the depression amount of the accelerator provided in the driver's seat of the automobile simulation. You can feel as if you were driving. According to the invention of claim 5, further, by moving a knob provided on the main body of the apparatus, it is possible to reproduce an actual engine sound of an arbitrary number of revolutions, and it seems that a real automobile is actually operated. You can enjoy the mood.

According to the sixth aspect of the present invention, it is possible to freely select which of the many vehicle models the actual engine sound is to be reproduced in accordance with preference.

According to the invention of claim 7, in addition to the actual engine sound, the movement of the model engine corresponding to this engine sound can be enjoyed.

[Brief description of drawings]

FIG. 1 is an overall external perspective view of an apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main part of FIG.

FIG. 3 is a diagram showing an address map of a storage unit of FIG.

FIG. 4 is a diagram showing digitization of the analog voltage signal of FIG.

FIG. 5 is a diagram showing a data map of a digital signal of engine sound.

FIG. 6 is a diagram showing digitization of engine sound.

FIG. 7 is a flow chart diagram at the start of the control of FIG.

FIG. 8 is a flow chart diagram during the control of FIG.

[Explanation of symbols]

1 Device Main Body 3 AC-DC Adapter 5 Cigar Socket 7 DC-DC Converter 9 Knob 11 Sound Cassette 13 FM Transmitter 15 Car Stereo 17 Headphones 19 Stereoset 21 Speaker 23 Model Engine 25 Mounting Hole 27 Attachment 29 Tachometer 31 Family Computer 33 Voltage Detector 35 A / D conversion circuit 37 PIO 39 CPU 53 D / A conversion circuit 55 Amplifier 57 Speaker 59 CTC

Claims (7)

[Claims] 1. A means for capturing an analog voltage signal, an A / D conversion circuit for converting the captured analog voltage signal into a digital voltage signal, and a section storing a digital voltage signal that has been previously subdivided and determined. From the A / D conversion circuit, a storage means for recording an actual engine sound of a rotation speed corresponding to the magnitude of the digital voltage signal roughly determined by the division and storing it as a digital signal in an area corresponding to each division Read the section corresponding to the digital voltage signal of
A control device for reading out the digital signal stored in the area corresponding to the section, a D / A conversion circuit for converting the digital signal of the engine sound read out from the storage means into an analog signal, and a D / A conversion circuit. An actual engine sound reproducing device, comprising: a reproducing means for reproducing an actual engine sound by an analog signal. 2. The device is used in the interior of an automobile in which the user of the device is riding, the power supply for the entire device is taken from a cigar socket in the interior of the automobile, and the analog voltage signal is from the cigar socket. The real engine sound reproducing device according to claim 1, wherein the real engine sound reproducing device is a power supply voltage. 3. The device is used in the interior of an automobile in which a user of the device is seated, and the reproducing means for reproducing the actual engine sound can receive an FM transmitter and a radio signal from the FM transmitter. The real engine sound reproducing device according to claim 1, wherein the real engine sound reproducing device is configured to have a car stereo in the interior of the automobile. 4. The device is used in a driver's seat of an automobile simulation, and the analog voltage signal is obtained corresponding to a resistance value of a variable resistor which changes according to a depression amount of an accelerator provided in the driver's seat. The real engine sound reproducing device according to claim 1, wherein the real engine sound reproducing device is provided. 5. The real engine sound reproduction according to claim 1, wherein the analog voltage signal is obtained corresponding to a resistance value of a variable resistor which is changed by moving a knob provided on the apparatus body. apparatus. 6. The actual engine sound reproducing apparatus according to claim 1, wherein the storage means is unitized for each vehicle type of the actual vehicle and is externally mounted to the apparatus. 7. The apparatus further comprises a model engine corresponding to the vehicle type of the actual vehicle, a motor for driving the driving portion of the model engine in the model engine, and the motor according to an analog voltage signal or a digital voltage signal. The actual engine sound reproducing device according to claim 1, further comprising: