JPH1032899A - In-car audio equipment - Google Patents

Abstract

(57) [Summary] [Problem] To provide an in-vehicle acoustic device capable of displaying a sound field to which a reverberant sound and a reverberant sound are added as a display pattern on a display device to visually inform a user of the sound field. I do. SOLUTION: Display pattern data corresponding to a sound field mode is stored in a storage unit 12, and display pattern data corresponding to the sound field mode selected by an operation unit 4 is read out from the storage unit 12 and displayed on the display unit 1. Then, while setting a desired sound field mode, the sound field mode set by the display unit 1 can be easily visually confirmed.

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-mentioned conventional on-vehicle acoustic device, only the level of an acoustic signal is displayed by using a light emitting element, and a sound field to which reverberant sound and reverberant sound are added is added. Could not be displayed.

[0004] The present invention solves the above-mentioned conventional problems, and utilizes a display device that displays spectral characteristics or equalizer characteristics, and uses a sound field to which reverberation and reverberation sounds are added as a display pattern as a display pattern. It is an object of the present invention to provide an in-vehicle acoustic device that can display a sound field visually to a user by displaying the sound field.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention stores display pattern data corresponding to a sound field mode and stores the display pattern data corresponding to a selected sound field mode. The data is read out and displayed on the display means.

Thus, a desired sound field mode can be set, and the sound field mode set by the display device can be easily confirmed visually.

[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 adjusting the delay time and outputting a signal for reproducing a sound field mode to which a reverberation sound and a reverberation sound are added, a selection means for selecting the sound field mode, and a display corresponding to the sound field mode Storage means for storing pattern data, display means for displaying the display pattern data, display pattern data corresponding to the sound field mode selected by the selection means from the storage means, and display on the display means Control means for controlling the signal processing means, adjusting the delay time in accordance with the sound field mode, and controlling the reflected sound and the reverberant sound. It is possible to set the de has the effect that a sound field mode set by the display device can be easily confirmed.

Hereinafter, embodiments of the present invention will be described 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 by using a plurality of segments for displaying spectrum characteristics and the like, and performs an operation of displaying a sound field 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 display signal corresponding to a sound field mode to the display unit 1 according to an instruction from the control unit 3, and is composed of an LCD driver and the like. ing.

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 sound field to the signal processing circuit 8 from the sound field mode specified by the operation unit 4. The display controller 2 has a function of outputting pattern data in the sound field mode to the display controller 2 and instructing the display controller 2 to display the sound field mode, and is constituted by a microcomputer or the like.

The operation unit 4 has respective selection keys for sound field modes selected by a user, and outputs data of the selected sound field mode by setting a sound field of a desired sound field mode. 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 data such as a multiplication value, an addition value, and a delay value for generating a sound field corresponding to each of the stored sound field modes. And has a function of outputting data of a set sound field mode in response to a control signal from the control unit 3, and is configured by a ROM or the like. ing.

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. A signal in which a delay time is adjusted to add a reverberant sound and a reverberant sound by adding multiplication, addition, and delay in order to generate a sound field corresponding to a sound field mode to each of the speaker sound signals. Is output. As described above, the signal processing circuit 8 can reproduce a realistic sound according to the sound field mode by adding a reverberant sound and a reverberant sound to the original signal.
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 according to the selected sound field mode from the storage unit 12 according to an instruction signal from the operation unit 4, and performs signal processing. The data is output to the circuit 8. Further, the control unit 3 inputs the pattern data of the selected sound field mode from the storage unit 12, and stores the pattern data in the display control unit 2.
To send to.

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

FIG. 3 shows a display example when each sound field mode is set. FIG. 3A shows a case where the sound field mode is set to reproduce a narrow hole such as a live hall.
FIG. 3B shows a case where the sound field mode is set to reproduce a somewhat large hall such as a concert hall.
(C) shows the case where the sound field mode is set to reproduce a hole having a considerably large space such as a dome hole.

As shown in FIG. 3, the user can easily confirm the sound field mode by associating the size of the display area of the segment with the width of the hole of the sound field reproduced in the set sound field mode. can do. Further, by displaying character information such as LIVE, HALL, and DOME together with the pattern display of the sound field mode, the sound field mode can be confirmed more easily.

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. From the setting data of the sound field mode, 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 sound field mode is converted to an analog signal by the DA converter 9, amplified by the amplifier circuit 10, and output from the speaker 11. Outputs in which the delay value, the addition value, the multiplication value, and the like are controlled according to the set sound field are obtained from the speakers 11 arranged in the front, rear, left, and right directions in the vehicle. An appropriate sound field is set.

Next, a display example of a sound field 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 sound field mode is set to a concert hall or the like shown in FIG.
00 blinks by on0, and similarly from 01 to 06, 10
-12, 14-16, 20, 21, 25-26, 30,
36, 40, 41, 45, 46, 50 to 52, 54 to 5
6, flashes 60-66.

3 (a) and 3 (b) using segments for displaying a 7 × 7 equalizer and the like in the same manner.
The sound field mode shown in (c) can be displayed.

[0030]

As described above, according to the present invention, the display pattern data corresponding to the sound field mode is stored, and the display pattern data corresponding to the selected sound field mode is read from the storage means and displayed on the display means. This has the effect that the desired sound field mode can be set, and the sound field mode set by the display device can be easily visually confirmed.

[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 display unit 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 vehicle 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 a signal for reproducing the added sound field mode; selecting means for selecting the sound field mode; storage means for storing display pattern data corresponding to the sound field mode; Display means for displaying, and display pattern data corresponding to the sound field mode selected by the selection means are read from the storage means and displayed on the display means, and the signal processing means is controlled to correspond to the sound field mode. Control means for adjusting a delay time and controlling a reflected sound and a reverberant sound by using a vehicle.