JPS5853210A - Presetting device - Google Patents

Abstract

PURPOSE:To set plural data with the operation of just one time, by storing the combination of impedances which are set at plural variable impedance circuits, in a memory. CONSTITUTION:The data of a variable impedance circuit for varying volume, balance and sound quality of an audio device is stored in a memory 4. For instance, the data are set to use the 1st address for jazz vocal and the 2nd address for classical music, respectively. A preset key 5 is provided in correspondence to the address of the memory 4. Thus a user can set a sound field suited to the jazz vocal by operating once the key 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a preset device that allows individual impedances of an impedance circuit to be set at once by operating a preset key.

Generally, audio equipment is used for volume, balance,
Variable impedance circuits are provided for bass, treble, etc., so that the sound can be adjusted to suit the tastes of the listener. On the other hand, the music fans also
There is a wide variety of music, including classical, jazz, popular music, etc.
The impedance of the valley variable impedance circuit is often changed depending on the genre, sound field, preference, and other conditions. However, conventionally, each time the above conditions change, the t impedance variable operation controls provided corresponding to each circuit must be readjusted to the optimum state, and this operation is extremely troublesome. There was a drawback.

The present invention eliminates the above-mentioned disadvantages, and by configuring the impedance of a plurality of variable impedance circuits to be set according to data stored in advance in a memory by operating a preset key, for example, the volume control of an amplifier circuit can be set. It is an object of the present invention to provide a preset device that allows a desired impedance to be preset using l preset keys without having to operate all operation knobs such as sweetness, balance, bass, and treble knobs one by one. Ladle it.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic circuit diagram of an embodiment of a variable impedance device d to which a glissetting device according to the present invention is applied, and FIG. 2 shows its operation. 1 is a timing chart for clarity.

In FIG. 1, a variable impedance device 1 is a device for varying the impedance of the variable impedance circuit 2 for volume, balance, bass, and treble. There are four types of keys that can be operated (level selection key 3, memory key 12, reset key 5, and circuit selection keys corresponding to each of the circuits 2). , a plurality of them are provided depending on the number of music north to be reset.In the case of this embodiment, the reset device 7 includes a key circuit 7a including a preset key j, and a preset circuit 7a including a circuit selection key 6 and a memory circuit. Roughly from 1I187b to Wabii
r+71. It is.

Below, we will explain how to set the level and preset the setting level of the irJ Innovedance circuit λ for Ho IJ Neem.
1, and for the 4fV configuration and operation of the glissetting device 7, the theory 1υ is given as f/l; 2+'n1.

First of all, if you directly set the level without using the script (hereinafter, the song Iτ-de 5),
"A" to n'J variable interference circuit 2 for monthly 5 volume.
-J l, -4-ru circuit selection key 1! Close K rJ'
After yl, the third level selection key corresponding to the level of jsr'':I(is closed. As a result, the code converter 9 outputs parallel data corresponding to the selection key 3.

Also, at the same time, "H" was released via Nando Game 1/10IX
“Level signal is input g iH strobe oscillator/
/Starts oscillation -4. ) For this reason, the data input type flip 70 is 1. f lth gate 1211'i
,to! , and supplies parallel data to the second gate 13. This second gate /3 is the key times'#! It has been suppressed by the gate signal from J7a, and now this gate signal is “
() level, so it is in the through mode. Therefore, it is supplied to the DA converter through the third gate, which is a parallel data input type flip-flop that connects the second gate 13 by 11'li. Then, the impedance of the volume variable impedance circuit is varied to a value corresponding to the selected level.

Similarly, the impedances of the variable impedance circuits 2 for balance, bass, and treble can also be changed freely. Note that the first gate /2 and the third gate llI rewrite the output data with the input data when a clock is input to the control terminal, and when there is no clock, the output data maintains the previous data.

Next, when writing data (hereinafter referred to as write mode), first close the circuit selection key g corresponding to the variable impedance circuit 2 for volume as described above, and then
Close the memory key.

As a result, the set/reset type 7 lip-flop/
A is set, the memory t receives a write command, and the second gate /3 is placed in the through mode via the Nantes gate /7.

Next, the preset key S is operated to designate a desired address, such as a jazz vocal address. As a result, the level data maintained in the gate 7.2 is loaded into the address decoded by the memory In address decoder 1, and the volume level presetting for the address is completed.

Furthermore, level data other than volume, such as balance, bass, treble, etc., are preset at the same time for the same location in -H. Furthermore, when the preset key is opened upon completion of the preset, the one-shot multi 20 is activated by the fall of the output of the Nantes gate /q, and the flip-flop /6 is reset.

In this way, the address specified by the preset key S is
You can write all the necessary data regarding jazz vocals, and by operating other preset keys in the same way, you can set a sound field with the desired amount and sound quality for classical and popular music sounds. Na row 1r 5 can be done.

Next, when calling up the preset data (hereinafter referred to as calling mode), the preset key 3 corresponding to the music source is directly operated. As a result, the address corresponding to the operated preset key j is specified by the address decoder/za, and the address corresponding to the operated preset key j is called from memory g.
do. Then, when the access time of the memory r has elapsed, the delay pulse generator 21 activates the third gate/
l is opened and the data preset in memory g is supplied to each variable impedance circuit λ.

In this case, at the same time as the preset key 5 is operated, the output of the Nantes Gate/9 becomes “H” level, and the Nantes Gate/
Since the output level of gate 7 changes from I HII to "L", the second gate /3, which was in through mode until then, becomes in hold mode. Therefore, even if the level selection key 3 is operated while the preset key S is operated, the data of the first gate/2 is blocked by the second gate 13. Therefore, only the predetermined data retrieved from memory is set.

At this time, -6 for volume, balance, bass, and treble.
Data is simultaneously supplied to each i+] variable impedance circuit.

- According to the preset device 7, the impedance setting for one variable impedance circuit is
This can be done with one touch by operating the preset key j. Therefore, each time the music source changes, the impedance is set to 61 for each variable impedance circuit 2.
You should be able to feel uneasy about the troublesome operations such as adjusting the 13th.

Note that the audio device shown in FIG. /Like, tuner 32, depth, 7.7, equalizer,? μ,
Amplifier,? For example, if the reset circuit 7b is provided in each of the equalizer and '? Key circuit 7a provided in q
The desired grisset circuit 7b is selected by the Q selection switch 3B.
It is recommended that presets be made for each individual device by connecting to the device.

In addition, the preset circuit 7b provided in each audio device 4'/ shown in Fig. q can be replaced with the key circuit 7.
As in a, a structure in which only one sticker is provided in common on each device may also be used.

As explained above, according to the preset device of the present invention, the impedances set for a plurality of variable impedance circuits are stored in different addresses according to the different combinations, and the The configuration is such that data stored at a desired address is recalled and the valley impedance circuit is set to the desired impedance based on the recalled data, so impedance settings for multiple impedance circuits can be made with one touch by operating a preset key. It is easy to perform, and by applying it to variable impedance circuits for volume, balance, bass, and treble, you can easily set the volume data, sound quality data, etc. This has the advantage that settings can be made easily and quickly with just one operation.

[Brief explanation of the drawing]

3 is a schematic circuit configuration diagram of an embodiment of a variable impedance device to which the preset device according to the present invention is applied, FIG. 2 is a timing chart for explaining its operation, and 3. ll112I is a schematic configuration diagram of an example of an audio device to which the preset device according to the present invention is applied. 2...oI' variable impedance circuit, 3...level selection key, g...memory key,!・・Preset key, ・・Circuit selection key, 7 ・・Brie 1 unit δ, 7
a...Key circuit, 7b...Preset circuit, r...
·memory. 70-

Claims (1)

[Claims] A plurality of variable impedance circuits whose impedances are varied by operating a level setting key, a memory that stores negative combinations of impedances set in each of the variable impedance circuits in correspondence with negative addresses; By specifying the address to be stored at the time of storing the memory and specifying the address at the time of recalling the memory, the impedance stored at the address can be read from the memory.
A preset device comprising a plurality of grisset keys for calling a combination and setting the combination in each of the impedance circuits.