JPH1032890A - Acoustic device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set an equalizer characteristic of each vehicle system such as a sedan, an RV vehicle, a station wagon, etc., and to display patterns which show the set vehicle systems. SOLUTION: This device is provided with plural speakers 11 which are separately arranged at the front and behind, and right and left inside of a vehicle, a signal processing means 8 which adjusts an equalizer characteristic of a sound signal to the speakers 11, a selecting means 4 which selects a vehicle system mode, a storing mode 12 which stores character information and display pattern data which correspond to the vehicle system mode, a displaying means 1 which shows the character information and the display pattern data and a control part 3 which reads the character information and the display pattern data which correspond to the vehicle systems selected by the means 4 from the means 12, shows them in the means 1, also controls the means 8 and adjusts the equalizer characteristic in accordance with the selected vehicle systems.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a display device for use in an audio device such as a radio receiver, a cassette deck, a CD player, etc., particularly a display device for displaying a spectrum characteristic, an equalizer characteristic and the like in a vehicle interior. The present invention relates to an on-vehicle acoustic device.

[0002]

2. Description of the Related Art Conventionally, there has been known a display device having a dedicated display means for displaying a spectrum characteristic and an equalizer characteristic in a vehicle cabin. Also, a vehicle-mounted acoustic device having a level display device for emitting a large number of light-emitting elements has been conventionally known.

[0003]

However, the level display device using the above-mentioned conventional light emitting element merely displays the level of the acoustic signal, and although the user can select the equalizer characteristics, the sedan, The sound signal level cannot be displayed for each vehicle system such as an RV car and a wagon car. That is, the size of the cabin for each vehicle system,
Despite the frequency characteristics changing due to the shape, the reflection material such as glass, and the sound absorbing material such as sheets, etc., the equalizer characteristics in each vehicle system have not been adjusted, and the optimal sound field for each vehicle system has not been adjusted. Could not be obtained.

The present invention solves the above-mentioned conventional problems, and utilizes a display device for displaying spectral characteristics, equalizer characteristics, and the like. The equalizer characteristics of each vehicle system, such as sedans, RVs, and wagons, are used. An object of the present invention is to provide an excellent in-vehicle acoustic device which can be set and displayed in a pattern indicating a set vehicle system.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention adjusts a plurality of speakers arranged in front, rear, left and right in a vehicle, and equalizer characteristics of an audio signal for these speakers. Signal processing means, selecting means for selecting a vehicle mode, storage means for storing character information and display pattern data corresponding to the vehicle mode, display means for displaying the character information and display pattern data, and selecting The character information and the display pattern data corresponding to the vehicle system selected by the means are read out from the storage means and displayed on the display means, and the signal processing means is controlled to control the equalizer characteristics in accordance with the selected vehicle system. Control means for adjusting.

As described above, according to the vehicle mode selected by the selecting means, the equalizer characteristics can be set for each vehicle and characters and patterns can be displayed for the set vehicle.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a plurality of speakers arranged in front, rear, left and right in a vehicle, and a signal processing for adjusting the equalizer characteristics of an audio signal to these speakers, respectively. Means, selecting means for selecting a vehicle system mode, storage means for storing character information and display pattern data corresponding to the vehicle system mode, display means for displaying the character information and display pattern data, and Character information and display pattern data corresponding to the selected vehicle system are read out from the storage unit and displayed on the display unit, and the signal processing unit is controlled to adjust the equalizer characteristics according to the selected vehicle system. Control means, and a display pattern of vehicle-system mode character information and a vehicle-system image corresponding to the vehicle system mode selected by the selection unit. An effect that can be displayed on the display means.

Further, according to the second aspect of the present invention, it is possible to select an equalizer characteristic according to the vehicle system mode selected by the selection means and generate a sound field according to the vehicle system.

An embodiment of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of an on-vehicle acoustic device according to an embodiment of the present invention. In FIG.
Reference numeral 1 denotes a display unit. The display unit 1 has an equalizer characteristic,
It is set using a plurality of segments for displaying spectral characteristics and the like, and performs an operation of displaying characters and pattern diagrams indicating vehicle systems such as sedans, hatchbacks, RVs, coupe, and wagons using the segments. And is constituted by an LCD or the like.

Reference numeral 2 denotes a display control circuit. The display control circuit 2 sends a seat position display signal corresponding to a seat position in the vehicle to the display unit 1 in accordance with an instruction from the control unit 3. And so on.

The control unit 3 sends equalizer characteristic data for generating frequency characteristics corresponding to each vehicle system to the signal processing circuit 8 from the vehicle system mode instructed by the operation unit 4, and sends the vehicle control information to the display control unit 2. It has the function of instructing the display of pattern data of a vehicle image according to the system mode, and is configured by a microcomputer or the like.

The operation unit 4 has a vehicle system selection key, such as a sedan, a hatchback, an RV vehicle, a coupe, a wagon vehicle, etc., selected by a user, and outputs data of a display pattern of the selected vehicle system image. It has an action and is composed of a switch and the like.

Reference numeral 12 denotes a storage unit. The storage unit 12 stores stored equalizer characteristic data for generating frequency characteristics corresponding to each vehicle system, and display pattern data and character information of a vehicle system image corresponding thereto. It has a function of outputting data relating to the set vehicle system in response to a signal from the control unit 3, and is constituted by a ROM or the like.

Reference numeral 5 denotes a music source.
Is composed of a cassette deck for playing music software such as a compact cassette tape, a compact disc (CD), or a CD deck.

Reference numeral 6 denotes an amplifier circuit for amplifying the audio signal, which comprises an operational amplifier or the like. Reference numeral 7 denotes an AD converter, which has a function of converting an analog signal to a digital signal, and is configured by an AD converter IC or the like.

Reference numeral 8 denotes a signal processing circuit, which generates a vehicle speaker signal (front right speaker, front left speaker, rear right speaker, rear left speaker) from the right / left audio signal. A voice generating means and an equalizer characteristic for generating a frequency characteristic corresponding to each vehicle system are adjusted, and are constituted by a DSP / IC or the like.

Reference numeral 9 denotes a DA converter, which has a function of converting a digital signal into an analog signal, and is constituted by a DA converter IC or the like.

Reference numeral 10 denotes a power amplifier, which has a function of amplifying the audio signal output from the DA conversion circuit 9, and includes a power amplifier IC and the like.

Reference numerals 11 denote speakers 11, which are arranged on the left, right, front and rear in the vehicle. The speakers 11 have a function of sounding an audio signal from the amplifier circuit 10, and each of them is constituted by a speaker unit or the like.

The operation of the on-vehicle acoustic device configured as described above will be described. FIG. 2 is a flowchart showing the operation state. The operation unit 4 selects a mode corresponding to each vehicle system according to the user's specification, and instructs the control unit 3 on the selected vehicle system mode.

The control unit 3 reads equalizer characteristic data corresponding to the selected vehicle mode from the storage unit 12 and applies the same to the signal processing circuit 8 in response to an instruction signal from the operation unit 4. Further, the control unit 3 reads out the vehicle system image display pattern data corresponding to the selected vehicle system from the storage unit 12 and sends the vehicle system pattern data and the vehicle system character information to the display control unit 2.

The display control unit 2 inputs the pattern data corresponding to the vehicle system sent from the control unit 3 and outputs a display signal to the display unit 1.

FIG. 3 shows a display example of each vehicle system image when each vehicle system is set. 3A shows a case where the vehicle system is set to the sedan, FIG. 3B shows a case where the vehicle system is set to the hatchback, and FIG. 3C shows a case where the vehicle system is set to the RV. 3 (d) shows the case where the vehicle system is set to the coupe, FIG.
(D) shows the case where the vehicle system is set to a wagon vehicle.

On the other hand, the left / right audio signal output from the music source 5 is amplified by the amplifier circuit 6, the analog signal is converted into a digital signal by the AD converter circuit 7, and applied to the signal processing circuit 8. The signal processing circuit 8 generates on-vehicle speaker signals (front right speaker, front left speaker, rear right speaker, rear left speaker) from the right / left audio signal, and also selects the selected speaker signal sent from the control unit 3. The signal processing of the in-vehicle speaker signal is added based on the equalizer characteristic data of each vehicle system from the setting data for each vehicle system.

The signal from the signal processing circuit 8 that has been processed according to the selected vehicle system is converted into an analog signal by a DA conversion circuit 9, amplified by an amplifier circuit 10, and
Output. Equalizer characteristics according to the set vehicle system are obtained from the speakers 11 arranged in front, rear, left and right in the vehicle, and the display 1 displays the selected vehicle system image.

Next, a method for setting the equalizer characteristics of each vehicle system such as a sedan, hatchback, RV, coupe, and wagon will be described. In FIG. 4, reference numeral 41 denotes a vehicle, and speakers 42 to 45 are disposed on the front, rear, left, and right sides of the vehicle 41, respectively. Reference numeral 46 denotes a pseudo listener, which can detect the frequency characteristics of the audio signal using a microphone or the like. Here, for example, a sine wave of the same level is output from the front right speaker 42 in the entire frequency band as shown in FIG.

When the frequency characteristic of the signal output from the front right speaker 42 is measured by the pseudo listener 46, the characteristic as shown in FIG. 6 is obtained. Sedan, hatchback, RV
Due to differences in vehicle interior space, reflecting materials such as glass, and sound absorbing materials such as seats for each vehicle system such as a car, a coupe, and a wagon car, FIG.
Are different from each other. Therefore, as shown in FIG. 5, equalizer adjustment is performed for each frequency so that the same level is obtained over the entire frequency band for each vehicle system. At this time, the equalizer characteristic value is stored in the storage unit 12 corresponding to each vehicle system.

The other speakers 43 to 45 can be equalized for each frequency and stored in the storage unit 12 in the same manner as described above.

[0029]

As described above, according to the present invention, the character information and the display pattern data corresponding to the vehicle system selected by the selection means are read out from the storage means and displayed on the display means, and the signal processing means is controlled to control the signal processing means. The equalizer characteristics are adjusted according to the selected vehicle system,
There is an effect that it can be displayed by characters and pattern diagrams indicating vehicle systems such as sedan, hatchback, RV car, coupe, and wagon car.

Further, by adjusting the equalizer characteristics for each vehicle system, the frequency characteristics can be set optimally in the cabin of any vehicle system, and an optimal sound field corresponding to the vehicle system can be generated. It has the effect that can be done.

[Brief description of the drawings]

FIG. 1 is a block diagram of a vehicle-mounted acoustic device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the embodiment.

FIG. 3 is a display diagram showing a sound volume display example in the embodiment.

FIG. 4 is an explanatory diagram showing a method for setting equalizer characteristics of each vehicle system in the embodiment.

FIG. 5 is a characteristic diagram showing frequency characteristics in the embodiment.

FIG. 6 is a characteristic diagram showing frequency characteristics in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display part 2 Display control circuit 3 Control part 4 Operation part 5 Music source 6 Amplification circuit 7 AD conversion circuit 8 Signal processing circuit (DSP) 9 DA conversion circuit 10 Amplification circuit 11 Speaker 12 Storage part

Claims (2)

[Claims] 1. A plurality of speakers arranged in front, rear, left and right in a vehicle, signal processing means for adjusting equalizer characteristics of audio signals for these speakers, selection means for selecting a vehicle system mode, and a vehicle. Storage means for storing character information and display pattern data corresponding to the system mode, display means for displaying the character information and display pattern data, and character information and display pattern data corresponding to the vehicle system selected by the selection means And a control means for reading out from the storage means, displaying the read out information on the display means, controlling the signal processing means, and adjusting the equalizer characteristics in accordance with the selected vehicle system. 2. The on-vehicle acoustic device according to claim 1, wherein an equalizer characteristic according to the vehicle system mode selected by the selecting means is selected to generate a sound field according to the vehicle system.