JPH1032898A - Vehicle acoustic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display seat positions in a display device, when sound fields are set in each seat position in a vehicle. SOLUTION: Each seat position in a vehicle is selected and display pattern data which corresponds to the selected seat position is shown in a display part 1 by an operational part 4, and also a signal level of a sound signal, that is outputted by speakers 11 which are arranged in the vehicle according to the seat position and delay time, are adjusted by a signal processing circuit 8. Thereby, the sound field can be set at a desired seat position, and the set seat position can easily be confirmed by the part 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for use in an audio device such as a radio receiver, a cassette deck, and a CD player used in a vehicle interior, and more particularly, a display device for displaying spectral characteristics, equalizer characteristics, and the like. To a vehicle-mounted acoustic device.

[0002]

2. Description of the Related Art Conventionally, there has been known a display device having a dedicated display means for displaying spectral characteristics and equalizer characteristics. 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, in the above-described conventional on-vehicle acoustic device, only the level of the acoustic signal is displayed using the light emitting element. A sound field is set at a seat position in the vehicle desired by a user in the vehicle by adjusting a sound level and a delay time from each speaker installed in the vehicle, and the set seat position cannot be displayed. Was something.

[0004] The present invention solves the above-mentioned conventional problems. When a sound field is set at each seat position in a vehicle using a display device for displaying a spectrum characteristic or an equalizer characteristic, a display pattern is displayed. It is an object of the present invention to provide an in-vehicle acoustic device capable of displaying a seat position.

[0005]

In order to solve the above problems, the present invention selects each seat position in a vehicle,
The display pattern data corresponding to the selected seat position is displayed on the display means, and the signal level and the delay time of the audio signal output from the speaker arranged in the vehicle corresponding to the seat position are adjusted. It was done.

[0006] Thus, a sound field can be set at a desired seat position, and the seat position set by the display device can be easily confirmed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a plurality of speakers arranged in front, rear, left and right in a vehicle, a multiplier, an adder, a delay unit, and the like. Signal processing means for outputting a signal in which the audio signal level and the delay time are adjusted respectively, selecting means for selecting each seat position in the vehicle, and storage for storing display pattern data corresponding to each seat position in the vehicle. Means, display means for displaying the display pattern data, display pattern data corresponding to the seat position selected by the selection means, read from the storage means, displayed on the display means, and controlling the signal processing means. Control means for adjusting the audio signal level and the delay time in accordance with the seat position. It is possible to set the sound field preparative position, has the effect of the seat position set by the display device can be easily confirmed.

An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. (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 a sound field in a seat position mode by a pattern diagram using the segments, and is configured 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 data such as a multiplication value, an addition value, and a delay time for generating a sound field corresponding to each seat position to the signal processing circuit 8 in the seat position mode specified by the operation unit 4. The display controller 2 has a function of outputting the pattern data of the sound field in the seat position mode to the display control unit 2 and instructing the display of the mode of the seat position.

The operation unit 4 has selection keys for each seat position in the vehicle selected by the user, and outputs data of the selected seat position by setting a sound field of a desired seat position. It is configured by a switch or the like.

Reference numeral 12 denotes a storage unit. The storage unit 12 stores data such as a multiplication value, an addition value, and a delay value for generating a sound field corresponding to each of the stored seat positions. And has a function of outputting data of the set seat position in response to a control signal from the control unit 3, and is constituted by a ROM or the like. I have.

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 amplifying circuit for amplifying the audio signal, which comprises an operational amplifier and 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. The sound generation means and, by adding multiplication, addition, delay, etc., to generate a sound field corresponding to the seat position to each speaker sound signal, the time and volume at which the sound output from each speaker reaches the listener DSP / IC, etc., which has a process of keeping constant etc.
And so on.

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 is composed of a power amplifier IC or the like.

Reference numerals 11 denote speakers 11, which are arranged on the left, right, front and rear in the vehicle, and have a function of performing sound processing of an audio signal from the amplifier circuit 10, and are each 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 the mode of each seat position according to the designation of the user, and instructs the control unit 3 to the selected mode of the seat position.

The control unit 3 inputs data for generating a delay value, an addition value, a multiplication value, and the like corresponding to the selected seat position from the storage unit 12 in accordance with an instruction signal from the operation unit 4 from a storage unit 12, and a signal processing circuit. 8 to output the data. Also,
The control unit 3 inputs the selected sheet position display pattern data from the storage unit 12 and sends the pattern data to the display control unit 2.

The display control unit 2 inputs the pattern data corresponding to the seat position sent from the control unit 3,
A display signal is output to the display unit 1.

FIG. 3 shows a display example when a sound field is set at each seat position. FIG. 3A shows a case where all four seats are set to the seat position, and FIG. 3B shows a case where the driver seat is set to the seat position.
FIG. 3C shows a case where a seat position is set for two front seats, and FIG. 3D shows a case where a seat position is set for two rear seats.

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. Based on the seat position setting data, signal processing such as addition, multiplication, and delay is added to each vehicle-mounted speaker signal.

The signal from the signal processing circuit 8 that has been processed according to the selected seat position is converted into an analog signal by the DA conversion circuit 9 and amplified by the amplifier circuit 10.
Output from the speaker 11. From the speakers 11 arranged in the front, rear, left and right directions in the vehicle, an output controlled at a sound signal level and a delay time according to the set seat position is obtained, and the seat according to the display pattern displayed on the control unit 3 is obtained. A sound field is set for the position.

That is, when the driver's seat is set at the seat position, the audio signal level is increased for a speaker that is farther from the driver's seat, and the delay time is increased for a speaker that is closer to the driver. The sound field can be set as if the driver's seat were at the center of the front, rear, left and right speakers.

Next, a display example of a seat position when a segment for displaying a 7 × 7 equalizer or the like is used will be described with reference to FIG.

Using 7 × 7 segments of a display device such as an LCD, vertical control signals are set to Segments 0 to 6, and horizontal control signals are set to common 0 to 6.

When the seat position is set in the driver's seat, 5 is set by Segment5 and Common0.
By blinking 0 and similarly blinking 41, 61 and 52, it can be recognized that the current seat position is set to the driver's seat.

Further, by illuminating each seat (passenger seat, rear right seat, rear left seat), it is possible to effectively display that the seat position is set in the driver seat among the four seats.

[0030]

As described above, according to the present invention, each seat position in the vehicle is selected, display pattern data corresponding to the selected seat position is displayed on the display means, and the vehicle is selected in accordance with the seat position. The signal level and the delay time of the audio signal output from the speaker disposed in the inside are adjusted, and the sound field can be set to a desired seat position, and the seat position set by the display device can be easily adjusted. Has the effect that it can be confirmed in

[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 a display diagram showing details of a display unit 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

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H04R 1/00 310 H04R 1/00 310E 3/04 3/04 H04S 1/00 H04S 1/00 D

Claims (1)

[Claims] 1. A speaker comprising a plurality of speakers arranged in front, rear, left and right in a vehicle, a multiplier, an adder, a delay unit, and the like. Signal processing means for outputting;
Selection means for selecting each seat position in the vehicle; storage means for storing display pattern data corresponding to each seat position in the vehicle; display means for displaying the display pattern data; and selection means selected by the selection means. Control means for reading the display pattern data corresponding to the seat position from the storage means, displaying the read pattern data on the display means, controlling the signal processing means, and adjusting the audio signal level and the delay time in accordance with the seat position. In-vehicle acoustic device.