JPH02238704A - Acoustic equipment - Google Patents

Abstract

PURPOSE:To improve the operability by relaying and outputting an audio signal outputted from a selected acoustic equipment to an equalizer amplifier, from which the audio signal is adjusted with the frequency characteristic in response to the designation and the resulting signal is outputted. CONSTITUTION:An acoustic equipment generating an audio signal consists of a tuner 1, a tape deck 2 and a CD(Compact Disk) player 3, and the audio signal of the left and right channels outputted from the acoustic equipment is selected alternatively with a function changeover switch 4 and the resulting signal is fed to an equalizer amplifier 6. The equalizer amplifier 6 is provided with the frequency characteristic in response to the frequency characteristic data supplied from a controller 11 to correct and output the audio signal supplied via the function changeover switch 4 according to the frequency characteristic. Thus, it is not required to set the frequency characteristic with manual operation every time the selection of plural acoustic devices is changed and the operability is improved.

Description

[Detailed description of the invention] Technical field The present invention relates to an audio device including a plurality of audio devices.

BACKGROUND ART In an audio device including a plurality of audio devices such as a tape deck and a china player, the output level and frequency characteristics of an audio signal may differ depending on the audio device. Therefore, in a conventional audio device in which an audio signal from an audio device is amplified by an amplifier to drive a speaker, it may be necessary to perform sound quality adjustment or volume adjustment. However, each time the selection among a plurality of audio devices is changed, it is necessary to manually set the frequency characteristics, resulting in a problem of poor operability.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an audio device that can improve operability even when the output level and frequency characteristics of audio signals differ each time the selection of audio equipment is changed.

The audio device of the present invention includes a plurality of audio devices that generate audio signals, a means for generating a designation command that designates any one of the plurality of audio devices, and an output signal from the one audio device that corresponds to the designation command. The present invention is characterized by comprising a relay means for relaying and outputting the audio signal relayed by the relay means, and an equalizer means for adjusting and outputting the audio signal relayed by the relay means with a frequency characteristic according to a designated command.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an acoustic device according to the invention.

This audio device is provided with a tuner 1, a tape deck 2, and a CD (compact disc) player 3 as audio equipment that generates audio signals. Left and right channel audio signals output from the tuner 1, tape deck 2, and CD player 3 are selectively selected by a function changeover switch 4 and supplied to an equalizer amplifier 6. Note that only one channel is shown in the figure. The equalizer amplifier 6 can change the frequency characteristics of the left and right channels under control from the controller 11. Equalizer Amb 6
For example, it includes a plurality of bandpass filters having different center frequencies and a level adjuster such as a VCA provided for each bandpass filter. The output signal of the equalizer amplifier 6 is amplified by the amplifier 7 to drive the speaker 8.

The controller 11 includes a microprocessor 12 and a ROM 1.
3. It is a microcomputer consisting of a RAM 14, an output interface 15, an input interface 16, and a clock generator (not shown). The microprocessor 12, ROM 13, RAM 14, output interface 15, and input interface 16 are connected to each other by a bus. Note that the RAM 14 is a non-volatile memory, or is backed up so that the stored contents will not be erased even when the power of the audio device is turned off. Further, a keyboard 17 and a dot matrix display 18 are connected to the controller 11.

In this configuration, a program and fixed data indicating the operation of the microprocessor 12 are written in the ROM 13 in advance, and the microprocessor 12 starts operating according to this program when the power is turned on. R.A.
As shown in FIG. 2, M14 is formed with a frequency characteristic data storage area for storing frequency characteristic data C1 to C3 corresponding to each audio device. Frequency characteristic data C1~
c6 is data that determines the frequency characteristics of the equalizer amplifier 6, and at the time of initial setting, all frequency characteristics are flat.

The keyboard 17 includes function designation keys (tape designation key, tinina designation key, and CD designation key) for designating the switching position of the function changeover switch 4, a characteristic setting key for resetting frequency characteristics, and a frequency characteristic. Keys (both not shown) such as level adjustment keys for each frequency band are provided for adjusting the frequency. When any of these keys is operated, a digital code corresponding to the operated key is supplied to the microprocessor 12 via the input interface 16, and the microprocessor 12 can determine which key has been operated.

Next, the resetting of the frequency characteristic data will be explained according to the operation of the microprocessor 12.

When the microprocessor 12 detects that the characteristic setting key has been operated, it starts the characteristic setting operation, and as shown in FIG. 3(a).
As shown in , first, select the current function changeover switch 3
The frequency characteristic data corresponding to the audio equipment selected by is read out (step 51). That is, when tuner 1 is selected, frequency characteristic data C1 is read out, when tape deck 2 is selected, frequency characteristic data C2 is read out, and when CD player 3 is selected, frequency characteristic data C1 is read out, and when CD player 3 is selected, frequency characteristic data C1 is read out. Read data C3.

A video data signal representing the read frequency characteristic data as a graph is created (step 52), and the video data signal is output to the display 18 via the interface 15 (step 53). Therefore, the frequency characteristics corresponding to the currently selected audio device are displayed on the display 18.

Note that when the initial settings are left as they are, a video data signal that shows flat frequency characteristic data as a graph is created and output. Thereafter, it is determined whether any of the level adjustment keys have been operated (step 54), and if a level adjustment key has been operated, the level adjustment operation is started (step 5).
5). In the level adjustment operation, the level of the frequency band of the operated level adjustment key is changed according to the operation in the frequency characteristics read out as data in step 51, and the above-mentioned video data signal corresponding to the change is created and output. . That is, a video data signal indicating on/off data for each dot of the display 18 is created. Therefore, indicator 1
8 displays the frequency characteristics whose level has been changed in accordance with the operation of the level adjustment key. If the level adjustment key has not been operated, or if the level adjustment operation has been completed, it is determined whether any of the function specification keys have been operated (step 56), and if any of the function specification keys has been operated. If so, the frequency characteristics displayed on the display 18 are written as data in the storage area corresponding to the operated function designation key (step 57).
), the display of the frequency characteristics on the display 18 is ended (step 58). For example, when the tape designation key is operated, the frequency characteristic data displayed on the display 18 is written as C1. If none of the function designation keys have been operated, it is determined whether or not a reset is to be performed (step 59). For example, if a key other than each function designation key and level adjustment key is operated, it is determined that a reset is to be performed and this characteristic setting operation is ended.

Next, when frequency characteristic data is written in each area, when any one of the function designation keys is operated, the microprocessor 12 starts the function switching operation, as shown in FIG. 3(b). A switching command is issued to the function changeover switch 4 to switch the selection position so as to relay the audio signal from the audio equipment designated by the operated function designation key (step 61), and the designated audio equipment is (step 62), and outputs the read frequency characteristic data to the equalizer amplifier 6 via the interface 15 (step 63).

Therefore, the equalizer amplifier 6 has a frequency characteristic according to the supplied frequency characteristic data, and outputs the corrected audio signal supplied via the function changeover switch 4 according to the frequency characteristic.

For example, when the frequency characteristic data c2 in the frequency characteristic data storage area is a characteristic in which the treble is boosted, operating the tape designation key switches the function selector switch 4 to relay the audio signal from the tape deck 2. . Also, by reading out the frequency characteristic data c2 and supplying it to the equalizer amplifier 6, the audio signal from the tape deck 2 is outputted to the amplifier 7 with a characteristic in which the treble is boosted by the equalizer amplifier 6, and the speaker 8 is driven. .

In the above-described embodiment, an audio device including a speaker 8 and a driving amplifier 7 for driving the speaker 8 is shown, but the speaker and driving amplifier are integrated with each other by using an audio signal outputted from the equalizer amplifier 6 as an output signal of the device. It is also possible to use an acoustic device that is not formed in the same way.

Effects of the Invention As described above, in the audio device of the present invention, the audio signal output from the audio equipment selected by the designated command for selecting any one of the plurality of audio equipment is relayed to the equalizer means, and the equalizer means The audio signal is adjusted with frequency characteristics according to the designated command and output. Therefore, even if the output level and frequency characteristics of the audio signal differ each time the selection of audio equipment is switched, the playback frequency characteristics of the audio signal from the audio equipment selected by the audio equipment selection operation can also be changed to the desired characteristics. Therefore, there is no need to manually adjust the sound quality, and operability can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a data storage area formed in the RAM in the device shown in FIG. 1, and FIGS. 3 is a flow diagram illustrating the operation of a microprocessor in the illustrated apparatus; FIG. Explanation of symbols of main parts 1...Tuner, 2...Tape deck, 3...C
D player, 4...Function selector switch, 6
... Equalizer amplifier, 11 ... Controller applicant Pioneer Corporation

Claims (2)

[Claims] (1) A plurality of audio devices that generate audio signals, means for generating a designation command that designates any one of the plurality of audio devices, and an audio signal output from the one audio device that corresponds to the designation command. and an equalizer means that adjusts and outputs the audio signal relayed by the relay means with a frequency characteristic according to the designated command. (2) The equalizer means includes means for storing frequency characteristic data corresponding to the plurality of audio devices, means for reading frequency characteristic data corresponding to the designated command, and frequency characteristics according to the read frequency characteristic data. 2. The audio device according to claim 1, further comprising an equalizer amplifier for amplifying the audio signal.