JPS5873218A - Controller for sound quality - Google Patents

Abstract

PURPOSE:To improve the operability, by attenuating the level of a frequency region of an audible signal corresponding to a logical signal in response to the logical signal, by a value corresponding to the logical signal. CONSTITUTION:An audible signal is amplified at a buffer 97 via a line 93 from a sound volume control circuit 5 in a sound quality control circuit 6, and given to an amplifying circuit 99 from a line 98. This line 98 is provided with filter circuits 101-105 corresponding to frequency bands, 50, 250Hz, 1, 4, 16kHz. In the filter circuits 101-103, the attenuation around each frequency band can be changed by selectively conducting transistors 107-110 with a control circuit 106. In the filter circuits 104 and 105, transistors 117-119 are selectively conducted in response to a digital signal from a bus 95, to change the attenuation around 4.16kHz of the audible signal.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a device for controlling the sound quality of a nine-tone signal.

In the prior art, the resistance value is changed by rotating the rotating shaft.
It is a variable resistor whose resistance value can be adjusted by adjusting the operating knob in a linear direction. A cute resistor like this can't be said to have excellent operability, especially if it's #E for your own car! I
1. It is undesirable from the viewpoint of safe driving when used in conjunction with a receiver or a tape recording/player.

An object of the present invention is to provide a sound quality side wrinkle arrangement with excellent operability.

FIG. 1 is a block diagram of one embodiment of the present invention.

This sound system Wt is mounted on an automobile, and its operation is controlled by a processing device l such as a microcomputer. Receiver using a phase-locked loop forward wave synthesizer capable of receiving m-modulation broadcasting and same-wave number modulation broadcasting 2. ! 9 signals from the tape recorder/player 3 which performs multiple fault functions in response to the digital signal 8VC are transmitted from the changeover switch 4 to the volume control circuit 5, the sound quality control circuit 6 and the volume balance control circuit 7. The signal is applied to speakers 11, 12, 13, and 14 provided in the passenger compartment 9 of the automobile 8. Speakers 11 and 12 are installed in the front part of the single room 9, respectively. The speakers 1314 are provided on the rear left and right sides of the vehicle compartment 9, respectively.

Also, this car 8 is equipped with an amateur radio device 15. Treatment jl! ! Personnel interface 7Ace 17.1 connected to device 1ri, processing circuit 16, and receiver 2, tape recorder/player 3, and amateur radio 15
Contains 8.19. Receiver 2 and tape recording/player 3
In order to control the amateur radio equipment 15, a key human power device 2o is provided. This f71-human power device 2o is inputted to the processing circuit 16 via the turnout counter 7/8 21.
Continued.

The processing circuit 16 is also connected to each control circuit 5, 6.7 via an output interface 94 and to the cathode ray tube 76 via an output ink face 75. In place of the cathode ray tube 76, a liquid crystal display LCD, a fluorescent display tube F
An LD or the like may also be used.

FIG. 2 shows the stop surface of the operation panel 22 of the present audio device. The masterpiece panel 22 is provided with an insertion slot 23 for loading and unloading a cassette tape. A mode selection switch 24 is arranged at the top of the operation panel 22. This mode selection switch 24 includes a switch 25 for receiving vibration-modulated broadcasting, and a switch 2 for receiving wave frequency modulated broadcasting.
6, a switch 27 for operating the amateur radio dis, a switch 28 for making the tape recorder/player 3 a masterpiece, a switch 29 for displaying the clock, and a switch 27 for operating the reception +1 at a predetermined time. Alternatively, it includes a switch 3o that functions as a timer to cause the tape recording/playback device 3 to perform a previous operation. A function selection switch 31 is arranged at the bottom of the operation panel 22. This funkunyong selection switch 31 performs an eject operation to eject the cassette tape loaded in the cassette insertion slot 23 to the outside, and a switch 32 to stop the tape from running, and the tape recording/playback device 3 performs a recording operation. The switch 33 is specially designed to perform the operations shown in Table 1, and the switches 34 to 38 are provided to perform the operations shown in Table 1.

Table 1 Here, when selecting "t-chidakun", g = xs broadcasting and same wave number modulation broadcasting by automatically inserting and subtracting,
- Represents a tuning operation that lowers the wave number. "Search up" (1) refers to a channel selection operation that increases the same wave number when automatically sweeping the channel selection for amplitude-quality broadcasting and same-wave number modulation broadcasting. [Search scans l and i, search up and search up S station operation or pause sweep, that is, pause when synchronized and insert again until next synchronization is changed to 11A unless otherwise instructed.] It means repeating the action. If the flip switch 36 is operated once again during this synchronization, the insertion and retraction will remain stopped at the 7th v4- position. "Preset scan" allows you to temporarily stop the pre-selected channels for amplitude quality broadcasting, high frequency & quality broadcasting, and amateur radio. This is an act of pride, and if the switch 35 is activated again at the same time, the subsequent] 1! Station operation stops. [Main/Sub J is set to switch 7 if the received wave number to be filtered is stored in the memory stored in the processing circuit 16 when the switch 35 for performing a preset scan is operated. 34 When the switching mode corresponding to the main unit is reached, one of the predetermined switch numbers 0
K allows reception of 10 stations of 9 to 9, and when the sub-side switching mode is reached, K allows selection of the other 1114 stations. ``REW J'' indicates the operation of returning the tape to @, IFFm, fast forwarding the tape, rPLAYjl'j:, tape playback and Dave use band, ie program conversion. VAPsJi, recording is performed only because this switch 35 is pressed. This represents the operation for skipping the band and performing the entire playback from the beginning. "PAUSEj represents a work that temporarily stops the recording/playback state.

A percentage display 39 is provided in the center of the masterpiece panel 22. It is manifested using this display device 399-1, t&crystal, etc. This display 39 displays the current channel in the display area 40, displays the time in the display area 411j, and displays the display # in the area 42 for the skip @ [also in the recording miss area]. d, display area 43
．． 44 represents the tape running direction, and a recording area 45 represents the input level of the audible signal during tape recording.

The operation panel 22 is also provided with a switch 46 for controlling the volume. When the switch 47 is operated, the volume gradually increases in quality, and when the switch 48 is operated,
The volume gradually decreases.

Switches 47 and 48 are collectively referred to as switch 46. Switches 49-53 are provided for tone quality control and are generally indicated by reference numeral 54. These switches 49-53d, l'iT auditory power signal Hz, 25
0Hz, 1KHz, 4KHz, 16K)iz Vc
are operated to control the amount of attenuation, respectively. These switches 49 to 53 have pairs of switches for increasing and decreasing the amount of attenuation, and will be given subscripts a and b, respectively, in the following description.

The switch 54 for performing volume balance is located at 8 on the vehicle.
A switch 56 that increases the volume of the speakers 11.12 provided in the IJ section, a switch 57 that increases the volume of the rear speaker 13.14, and a switch 57 that increases the volume of the speaker 13.14 on the right side.
It consists of a switch 58 that increases the 40-tone violet, and a switch 59 that increases the fm of the left speaker 11.13.

FIG. 3 is a specific electrical circuit diagram of the key manpower device 20. As shown in FIG. Switches 25 to 30 .
32-38.47, 48°49-53.56-59 are arranged. Switches 49 to 511-j for sound quality control
, consisting of a pair of switches, the switch that increases the amount of attenuation is indicated with the suffix a, and the switch that decreases the amount of attenuation is indicated with the suffix s. The key human power device 20 also includes:
Including switches 81 to 86, these switches 81 to 8
6ij, l1 It is provided somewhere other than the panel 22, for example near the handle, and is configured to allow remote control. Signal - 60~68 and 70~
73 is connected to the input/output interface 7Ace 21;
The processing circuit 16 detects the operated switch. The levels of all the frequency bands of the 9-channel signals obtained by operating the switches 49 to 53 for sound quality control are provided from the processing path 16 to the gap pole tube 76 via the output interface 75 for display. be done. The operation panel 22 has a power switch! -80 is provided.

FIG. 4 shows the mode selection switch 24, volume control switch 46, and sound quality control switch 54.
This is a flowchart for explaining the operation according to the operation of the IJal switch 55. Starting from step nl, it is determined in step n2Kk whether or not the power switch 80 has been operated. By operating this '4' switch 80, the power energization and deg+ processing of the power supply circuit shown in Figure @1 is performed in step n2a. 'When it is determined in step n2 that the power switch 80 is operated and power should be applied, it is determined in steps n3 to n8 whether each of the switches 25 to 30 of the mode selection switch 24 has been operated. Switch 26 for same wave number modulation broadcasting or switch 2 for amplitude modulation broadcasting
5 is operated, the process moves to step n3a and radio reception processing is performed. When the switch 28 of the tape recording/reproducing device 3 is operated, the process moves to step n5aK, and the operation of the tape recording/reproducing device 3 is performed. Similarly, in steps n6a, n7a, and n8a, one operation of the amateur radio device 15, a pre-clock processing operation, and a clock processing operation as a timer are performed, respectively.

In steps HIO and nil, the volume increase process n1Oa and the sound volume decrease operation nil are performed according to the operation of switches 47 and 48' included in the switch 46 for volume control, respectively.
& is performed.

In steps n12 to nls, the operation of the balance switch 56 to 59 is detected, and in step n12a
In steps n16 to n20, where the volume balance processing of the speakers 11 to 14 is performed in ~n15a, it is determined whether or not the switches 49a to 53a for reducing the amount of attenuation for each rN4M band have been operated in order to control the sound quality. is detected, and the operation KW of these switches 49a to 53a
Finally, a sound quality processing operation is performed in step n16aNn20alc.

In steps n21 to n25, the switch 49 is used to reduce the amount of attenuation of the audible signal in the four wave number bands to be controlled.
Whether or not b to 53b has been operated is determined by #'1JIlr, and accordingly, an attenuation amount increasing processing operation is performed in steps n21a to n25b.

In step n26, it is determined whether the mode is the clock operation mode according to the operation of the switch 29, and if so, even if the switch 29 for no clock operation is operated in step n26, f') continues the subsequent clock operation. Let's do it. In step n27, it is determined whether or not the reserved operation mode is in accordance with the operation of the switch 30. If so, in step 127m, it is assumed that the switch 30 has been operated, and the subsequent timer operation is continued. step n2g
In this case, switch 25 or 26 is operated to control radio q.
a* It is determined whether the operation mode is being performed, and if so, the radio reception operation continues. In step n29, it is determined whether the tape recording/playback device 3 is being operated, and if so, step n29
At step a, the operation of the tape recorder/player 3 continues. If it is determined in step n30 whether one operation of the amateur radio device 15 is being performed according to the operation of the switch 27, the operation of the amateur radio device 15 is continued in step n30a.

FIG. 5 is a flowchart for explaining the operation for receiving amplitude modulated broadcasting or interwave & poor tone broadcasting by receiver 2 in step n3a according to the operation of switches 25 and 26. Step ml KaQq Step m
2, it is determined whether the cassette tape is pushed into the cassette extension port 23 or not. If the cassette tape is loaded (8), it is determined in step m3 whether or not the recording stop switch 33 has been operated;
If so, the process moves to step m3aK, and the tape recording/playback device 3 performs a recording operation. If no tape is inserted, the process moves from step m2 to step m4.

In step m4, it is determined whether switch 25 or 26 has been operated. switch 25 ~ or 26
When has been operated, the process moves to step m16, where it is determined that the switch 25, 26 has been operated for the first time, and in the next step m17, it is determined whether or not the switch 25 for vibration 1lv11 modulation has been operated, and the switch is When it is determined that switch 25 has been operated, amplitude modulation broadcasting is received in step m1g, and when switch 26 has been operated, steps m17 to m19 are performed.
Then, reception of the same wave number modulation broadcast is performed.

In step m5, it is determined whether the switch 81 (see FIG. 3) has been operated, and step sn6 VC
After that, it is determined whether the switch 37 is operated or not. When the switch 81 or 37 is operated, the operation of increasing the receiving wave number is performed in steps m20ici?l and q.Step m7 Now switch 82 (83
(see figure) and whether the switch 38 was operated or not.
When the signal is disconnected and operated, the reception waveform is lowered in step m21 and a channel selection operation is performed.

In step m8, it is determined whether the switch 36 is operated or not, and when the switch 36 is operated, K is
In step m22, a sweep operation of the received same wave number is performed. In step m9, it is determined whether the switch 35 is operated and the preset scan is in a cutoff state where the preset scan should be terminated, and in step mIO, the switch 35 is operated.
It is checked whether or not the LA switch 35 is in a conductive state to start a preset scan, and the process moves to step m23 in which the LA switch 35 is operated, and a preset scan processing operation is performed. In step mll, it is determined whether the switch 34 has been operated or not. When the switch 34 has been operated [H], the process moves to step m24, where processing for selecting a receiving wave signal to be selected, which is stored in advance in the memory, is performed.

In step m12, it is determined whether or not a sweep operation is in progress for the reception wave, and if the sweep operation is in progress for the reception wave, the process moves to step m22K.

Subsequently, in step m22, the scanning field octopus cultivation is performed. Is the preset scan operation in step m13?
If it is, the process moves to step m23 and the preset scan 1ill1 operation is continued. In step m14, the reception same wave number It! stored in advance in the memory according to the previous operation of the switch 34 is selected! It is determined whether Jm is in progress, and if so, the operation of step 7'm24 is continued.

FIG. 6 is a flowchart for explaining the specific operation of the scan process in step m22K.

Step ptrc moves from step ms, and in step p1 it is determined whether the switch 36 is operated for the first time, and if so, it is determined in step 92 whether or not the scan operation mode is being performed. be done. If the scan operation mode is not being performed, a scan operation is started in step p3.

In step p4, the reception frequency is changed to increase, and in step p5, when selecting a channel, f1+, 4
Wait for 5 seconds at the same reception frequency. In this 5th excerpt 1-,
If the ma person wishes to continue receiving at the same reception frequency, he/she only has to operate the switch 36 again, and then one operation of moving from step pl to m l 5 K is performed.

If you want to continue selecting the next channel, just wait.

If it is determined in step 92 that the scan operation mode is in the skin operation mode, the scan operation mode is terminated in Stella 7'I) 6 and the process returns to step m15.

When it is determined in step m12h that the Suki Sea is being created, it is determined in step p7 whether or not the current received synchronous wave number and the previous received synchronous wave number match. If the reception numbers match, it is determined in step p8 whether or not the waiting time has been 5 seconds. When the current same wave number and the previous received 1d direction wave number do not match, K moves to step m15 and a scanning operation is performed. In the fall and spring when the received wave number matches the broadcast wave number, the A#4-shaped piece plays 1 & 4 for 5 seconds as described above.
Based on this, the -1x player determines whether or not it is the desired station, and if it is the desired station, [F'i, i11, the switch 36 is again suppressed. As a result, the process moves from step pl to step m15, and the channel selection operation ends.

Figure @7 is a flowchart for explaining the operation of the preset scan process performed in step m23. When the switch 35 for preset skinning is operated in step m9 and the cage is in the open state, the preset skinning operation is completed in step 49. When the switch 35 is operated and conductive in step 7' m 1 O, it is determined in step ql whether or not the switch 35 is operated for the first time, and if so, a preset scan operation is performed in step q2. It is determined whether the current mode is selected. When the preset skin-in operation is not performed, K moves to step q3;
A step scan operation is started and the process moves to step 94. In step q4, when the received fi4+- wave frequency matches the frequency #cK of the broadcasting register, the receipt of the broadcast is maintained for 5 seconds in step q4, and the process moves to step 45.

In step 45Kk, check whether the receiving channel number is 9; it is determined, and if so, step 4.6
It is determined whether there is a deadlock or no channel number. When the receiving channel number is a number other than 9, the process moves to step q7, where the receiving channel number is incremented by 1, and in step q8L/C, the receiving same wave number corresponding to that channel number is selected. A station reception operation is performed. In step 96, if there is no channel i, the process moves to step qll, and the channel Jjj "0" is selected and received.

When it is determined in step m 13 that the mode is the preset scan operation mode, it is determined in step qlO whether or not the 5-second direction reception clock is in progress, which is performed at the time of channel selection reception. If this 5 second period is not in progress, step 4
Moving on to step 4, I make an OI note that I will perform a 5-sho reception for the next 4gM station.

FIG. 8 is a specific flowchart of the tape operation mode in step m3aK. The process moves from step rl to state r2), where it is determined whether the switch 32 has been operated or not, and if it has not been operated, step r3I is entered.
Then, whether or not the switch 34 has been operated is exposed at '44J. When the switch 34 is not activated, K moves to step r4, where it is determined whether the switch 33 has been operated for recording. If the switch 33 is not operated, the process moves to step r5, and it is determined whether the switch 36 is operated. STETSU 7'y 6,
At y7, it is determined whether the switches 37.3'8 are operated or not. In step r8, it is determined whether the tape is being played back. In step r9, it is determined whether the switch 35 has been operated or not.
At O, it is determined whether or not the cue playback operation is being performed in accordance with the operation of the switch 35.

When the switch 34 is operated in step r3, K
In step rll, it is determined whether or not the switch 34 is being operated for the first time, and if so, in step r12, tape running is temporarily stopped, that is, a pause (PALISE) is performed.

If the switch 34 is not operated for the first time in step rll, the temporary stop operation of tape running is canceled in step r13.

In step r4, when the switch 33 is operated for recording γ), the process moves to step r14Vc and a recording operation is performed. When the switch 37 is operated in step r6, the tape is moved to edge-1 in step r15.
It becomes a work.

When it is detected in step r2Vc that the switch 32 is being operated, the process moves to step r16, where it is determined whether the tape is in a stopped state or not. If the tape has stopped, the cassette tape is ejected from the cassette ejector 23 in step rl8Vc, and one eject process is performed. If the tape is running, the process moves from step r16 to ri8Vc, and the tape stops running.

Toki whose switch 36 was operated in step r5,
In step r19, it is determined whether the tape reproducing operation is being performed or not. When a tape playback operation is being performed, the history of the recording belt is performed in step r20VCsy. - When the track is not playing? The seven regeneration operations are started and continued in the goss depth r2L.

In step r9, the switch 35 is operated.
When we are at home, the number of times the switch 35 has been pressed is detected in step r22, and the number of times the switch 35 has been pressed corresponds to the fact that the recording area has moved beyond one country. In step r101c, when it is in the cue playback operation mode, the process moves to Stella 7'r 23, where it is displayed whether cue selection is in progress, and if so, in step r24, the jump operated by the switch 35 is performed. Perform #C calculation processing by 1 from policy x, step r2
5, it is determined whether the result of subtraction of 7 is zero. 1 when she is a wife, move to step r26,
The skipping run for cueing is stopped, and a regeneration operation is performed in step r27.

Figure 9 shows the switch 2 for amateurs 41 and 15.
7 was crushed and amateur no dfi15 gravel 1'1
12 is a flowchart for explaining the specific operation of step n3m when . Moving from step sl to $2, the 0 switches 34 to 38 in the processing circuit 16
A signal according to the operation is transferred from the input/output interface 19 to the amateur radio 4fi 15. The process moves from step s2 to step s5, in which it is detected whether the switch 34 is operated and whether the platform is bent or not.

By operating the switch 34, the communication frequency is switched to the main channel 45,00 MHz or the subchannel VC 45,50 MHz. In steps 56 to s9, the switches 35, 36, 37
.

It is detected whether or not each of 38 has been operated.

In step slO, it is detected whether or not the switches of the communication channels 1 to 5 in the amateur collarless 4*15 have been operated. In step all, amateur radio 1
It is determined whether or not the power switch No. 5 is disconnected, and if the power switch is turned off, the process moves to step m 15 Vc.

In step s5, when the switch 34 is operated, the amateur black liner 15 is transmitted from the processing circuit 16 via the input/output interface 19 in step s15.
A signal is given to

Step s6 [Q then switch 35 is operated and fc'
t;kc&1, proceed from step S6 to step s17, enter preset scan operation mode, step s1
8, the channel number currently being received is set, and the process moves to step a20.

When the uninch 36 is operated in step s7, the process moves to step s21, and the preset scan operation mode is canceled, and in step s22, the scan operation mode for tuning stored in the amateur radio device 15 is canceled, In step s23, the channel number for channel selection is cleared, and the process moves to step m20.

Step B8. When the switch 37 or 38 is activated in step a9, the process moves to step s2'4, where it is determined whether or not the memo switch viewed by the amateur wireless device 15 has been turned on. If it has been turned on, step 825 is performed. Then, a rising wave or one wave operation is performed due to the communication wave. In step s26, the operation of the switch 36 is canceled. When the memo switch is conducting in step s24, the process moves to step s27, and the communication 1
A scan operation of four wave numbers is performed, and the process moves to step s23.

When the switch for specifying the channel number is activated in step alt) 4C [i, proceed to step s28, set the reception channel Ji:Jij, set the output pulse number in step 829, and perform the reception processing operation in step 330. Then, proceed to step 320.

The 7-ef near-armless machine 15 is configured so that if the cancel switch is operated to cancel the operation and then released, the operation cannot be changed to the next operation. Therefore, the processing circuit l is the same as when the cancel switch was created to change the operation of the amateur wireless machine 15.
It is controlled by a program so that it performs one crop every time it detects electricity.

Figure 410 shows the fm control circuit 5, f quality control circuit w! 7 is a concrete block diagram of the I6 and f-balance control circuit 7. FIG. An audible signal is output from line 90tlCJ using the clear modulation ID number or the forward wave number adjustment number A. An audible signal Fi from line 90 is applied to adenator 91 of volume control circuit 5. The Athens signal line 91 attenuates the signal from line 90 in response to the voltage of the signal applied to line 92 and outputs it to line 93. Path 951 from processing circuit 16 via output interface 94
C is derived (ci is the control circuit 9 consisting of an integrated circuit)
given to 6. Number 16 of the 5 pits given to this control circuit 96 is determined as shown in Table 42.

Referring to Figure @11, the operation when the master switch 47 of the masterpiece panel 27KIm is operated is shown. When the switch 47 is operated, steps ul to u
Moving on to step 2, the test is whether the switch 47 was operated first or not. be done. When operated for the first time, KLI-1 moves to step u5 and performs a clock operation for a predetermined waiting time Wl. When it is determined that the switch 47 remains operated in step u2, the kakunta which clocks a predetermined time w1 performs a kakunto operation in step u3, and
When the predetermined time WlIC is reached in step 4, the process proceeds to step u5. At step u6, the attenuator 9
The decrease iI violet of 1 is the minimum, so whether the sound electric current is maximum or not is determined by -FIJ11r, and if it is not maximum, the process moves to step u7, where the amount of attenuation by the attenuator 91 is reduced by one step, and the fiit point is reduced to 1. The signal that increases step R1 is the control time w! 196. In this way, the control circuit 96 harmonizes the voltage value derived from the step uBK & line 92, and the adenator 91 increases flit by one step.

Referring to FIG. 12, one operation is shown when the switch 48 for decreasing the f amount on the operation panel 22 is operated. When this switch 48 is operated, step u
The process moves from lO to all, and it is determined whether or not the switch 48 is being operated for the first time. If it is the first time, the process moves to step u14 and clocks a preset time Wl. Clear Kakunta. When it is determined in step ull that the switch 48 is continuously operated, the operation time is kept in step u12.
, and when the operating time is a predetermined time Wl in step u13, step u
Move on to 14. In step u15, it is determined whether the sound 1i value set by the attenuator 91 is the minimum, that is, whether the attenuation of the attenuator 91 is the maximum. If not, the process moves to step u16, and the f amount value is 1st stage R
A signal is derived from the control circuit 96, which is modified so that the attenuator 91 decreases f'M by one step. Thus the control rotation l@96
Next, the voltage value of the line 92 is reduced so as to have the volume value set in step u16.

If you refer to Figure @13, the operations explained in Figures @11 and %12 will be more clearly explained. Assume that the switch 47 is turned on at time tl as shown in FIG. 13 (11+7), and the interstitial rock continues until time t2. When it is detected in step u2 that the time at time tt-12 is shorter than the predetermined waiting time Wl, the process moves to steps u5 and u6, and the f-output data accepted by the second wheat is output from the processing circuit 16. The ink 7 is led out to the bus 95 via the ink 7 ace 94. As a result, control circuit 96#
't, the voltage on the line 92 is qualityified, thereby reducing the attenuation of the tenator 91 by one step, 1tit.
is increased by one step R1 as shown in @13 (31). At time 13-t4, operate the swing '4-47, and at this time [3-E4 or a predetermined time id
Similarly, when l W is less than 1, the degree attenuation of the attenuator 91 increases by one step.

Assume that the switch 47 is continuously pressed from time [5 to t6]. Time [5 to t6 is longer than the predetermined waiting time W1, so step u
2-click step u3. Move to step u5 via u4,
When the process moves from step u6 to step u7, the volume value increases by one step R1. In this way, the sound i & i according to the attenuation amount of the attenuator 91 is reduced by one step R1 at a time ft.
It increases by one step for each dWl.

From time [5 to t6, the switch 47 continues to be operated, and as a result, the attenuation amount of the attenuator 91 becomes the minimum and the attenuation amount of the attenuator 91 becomes the maximum.After that, the attenuation amount of the attenuator 91 remains small and the volume increases. will be kept as is.

The switch 48 is activated at time t7~[
8 and times t9 to [10, when the operation is performed for less than the predetermined waiting time W1, the attenuation amount of the attenuator 91 increases by one step, and the volume decreases by one step R1. be changed.

From time tll to t12, a predetermined waiting time open W1
When the switch 48 continues to be conductive for the above period of time, in step u12. Waiting time Wl according to the operation of u13
At each step, the volume decreases by one step R1 in step u16. When it is detected in step u15 that the volume has reached the lowest level, the lowest value of the sound is maintained by pressing h while keeping the switch 48 operated.

In the sound quality control circuit 6, the i1 audio signal from the sound quality control circuit 5 via the line 93 is m-converted in the buffer 97 and is applied to the amplifier circuit 99 from the line 98. this line 98
50Hz*250Hz, 1KHz
, 4KHz, 16KHz K (corresponding filter circuits 101 to 105 are provided.゛Filter circuit 1
01, the number 46 from the control circuit 106 receiving the digital signal from path 95 is connected to transistors 107-11.
0 and transistors 107-110 are controlled. Transistor 107~l l OK Fis'
4 JL/ l i l, capacitor 112, and resistor 1
13 to 116 are connected with good luck. By selectively turning on transistors 107 to 110 by control circuit 106, the amount of attenuation near 50 Hz is changed. The filter circuits 101 to 103 have a similar configuration [L, their circuit chambers & are the same wave number band @50Hz.

It is changed corresponding to 250Hz and IKHz.

The filter circuit 104 includes a control circuit 125, transistors 117 to 119, a coil 120, and a capacitor 12.
1 and resistors 122 to 124, including a Vc resistor 12
6, a transistor 127, a capacitor 128, and the like. In this way, in the filter circuit 104, the digital signal Kb+ from the path 95 is applied to the transistors 117 to 11.
9 is selectively tortured and controlled. This changes the amount of attenuation of the 5f audio signal near 4 KHz. Another filter circuit 105 has a configuration similar to that of the filter circuit 104, and the circuit constants are changed compared to the filter circuit 104.

$3: iK Okeru bit D OND 3 color bt le 4
? 'y Tono4R5jtl, This is a signal derived to path 95 for 50 Hz sound quality control, and it is a signal derived from path 95.
The 8-bit signal consisting of A7 is used to control the sound quality.
Output interface 7 for display by i-tube 76
This is a signal derived from 5.

Cooperation 3 Table @3t [Similar signal rt% frequency band 5 as shown
0 Hz, l KHz, 4KHz and 16KH
z is similarly m-.

FIG. 14 shows the step n16m (see FIG. 4) for controlling the amount of attenuation in the same wave number band 50 Hz and its − wave number band 5.
0 Hz attenuation reduction operation step n17. 2 is a flowchart showing specific operations. When switch 49 is operated in step n16K, step n16a
In step v3 included in K, it is determined whether or not the switch 49m is being operated for the first time, and if so, it is discussed in step m4 and a predetermined waiting time W is set, for example, 0.
．． The operation is started by setting a kakunta that performs a clock operation only in the 5 second direction, and the step master 5 determines whether the decrease is the minimum and the level of the passing signal around 50 Hz is the maximum. If not, the attenuation amount is decreased by one step in Step Maro, and the passing sound volume is therefore increased by one step R2. When the step muff S determines that the passing sound is at its maximum, the step muff is moved to and control of the sound quality around 55 Hz is completed. When the switch 49m continues to be pressed in step v3, K moves to step v8 and 0.
It is determined whether or not the waiting period of 5 seconds is in progress, and if not, in step v9, KO0 occurs while the switch 49m is being operated.
A waiting time of 5 seconds is counted, and after the waiting time has elapsed, the process moves to Stepma 5. 1d1 when waiting for 0.5 seconds in step v8
If it is inside, the process moves to step v7.

In order to reduce the acid content in the same wave frequency band of 50 Hz, the switch 49b is pressed in step n17.
It is detected that the f operation has been performed, and it is determined in step Vll whether the switch 49b is an operation of M41], and if so, a predetermined waiting time W2 is calculated in step V12. Counting 1ii111 work begins. In step v13, 1t of the same wave number component near IfiSclHz! It is determined whether or not the excessive sound level is the minimum, and if not, the process moves to the step master 14, where the attenuation amount is increased by one step, and the passing sound is discharged across that one step R. . Thereafter, the process moves to Stepma 15. When it is detected in step v13 that the passing sound of the frequency component around 50 Hz is the minimum, the process moves to step v15. If switch 49b remains operated in step vll, step vll
16, it is determined whether or not the waiting time is 0.5 seconds.
IJwt is done. Step v 164C When switch 49b is not operated during the time limit, step v
Step 17 is followed by a 0.5 second clocking operation or kakunta, and then step 13 is entered. Step v1
If it is detected in step v15 that the switch 49b is being operated during the waiting time, the process moves to step v15. In this way, in FIG. 14, the operation of the 50 HzK frequency band related switches 49a and 49b is performed. step v
After the lO determination step, the frequency is 25 GHz.

1 KHz, 4 KHz, 16 KHz A similar operation is performed according to the operation of the switches 50 to 53 to achieve the control of Saega.

In order to change the amount of attenuation of the frequency components of the audible signal around 50 Hz, switch 49 is used as shown in @15 Figure 111.
Assume that b is suppressed at time 11N12 and time [3 to t4. This time 11~[2 and t
3 to t4 is a waiting time of less than 0.5 seconds. Through such operations, the operations from step v3 to malo in FIG. 14 are performed, and the control circuit 106 ij) transistor l
Selectively block Q7-110, thereby 5
The amount of attenuation of the same wave number component of the audible signal near 0 Hz is reduced by one step, and the passing film is increased by one step iR2. (i') The condition of Wl due to the filter circuit lO1 in the vicinity of 50Hz is shown in Fig. 15 (3).
As shown in

When the switch 49a is continuously operated for a period of 0.5 seconds or more from time t5 to t6, Kpo occurs.

Step v3 of tgi4 diagram. v8. v9. v5. v6,
v7 is achieved, and this causes the circuit 106 to lower the attenuation of the frequency component of the audible signal in the vicinity of 50 Hz by one step every 111J0.5 times.
. Even if the switch 49a remains operated K after the attenuation fti becomes the minimum, the amount of attenuation does not change and remains at the maximum value.

@15 As shown in Figure (2), from time t7 to [8 and time t9
0 at ~110. ! ? If switch 49b is operated for less than a second, the operation of steps vll-v15 is accomplished. As a result, the attenuation amount of the filter circuit 101 is decreased by one step, and the passing sound volume is increased by one step R2. When the switch 49b is operated continuously for a waiting time of 0.5 seconds or more at times ill to 112, the filter circuit 1
0.01 in the frequency component of the audible signal around 50Hz.
Step v16. decreases by one step R2 every 5 seconds. v17*v13. vl-4 and v15 are coupled. 1 = around 50 Hz with maximum attenuation
After the passing sound volume of the J-signal's mari wave and component becomes the minimum, even if the seventh switch 49b is activated, the attenuation amount remains at the maximum.

A signal from the f/Jd circuit 6 via the fin 130 is applied to the volume balance control circuit 7. In the sound-balance control circuit 7, the audible signal from the fin 130 and capacitors 131-134 are applied to amplifier circuits 135-13B via attenuators 139-142. MRm of the attenuators 139 to 141 is the digital signal 't?' from the path 95. , n is determined by the control circuit 143.

The control circuit 143H receives the digital signal from the path 95, and when the switch 56 is operated, the attenuator 1 corresponding to the speaker 11.
39. Attenuator 141, 14 for speaker 13.14 which resists the reduction of 14Ll and increases fji, and at this time, rear Vc7 of vehicle interior 9
Set 1 to increase the size of the gy rat in 2 and decrease the amount of f. Also, when the switch 57 was a masterpiece, the attenuation of the gamma tenators 139 and 140 for the speakers 11 and 12 installed in the IJIJ section of the J4L 9 was increased, the cover was made smaller, and the single chamber 9 Speaker 13 installed at the rear of
, 1.4, the attenuation amount of the attenuators 141, 142 which are arranged opposite to the attenuators 13, 1.4 is decreased to increase the t'm of those speakers 13, 14. When the switch 58 is operated, the VC
The attenuators 140 and 142, which correspond to the force 12°14, are lowered to increase the sound volume, and the attenuators corresponding to the speakers 11 and 13, which are installed on the left side of the vehicle compartment 9, are lowered to increase the volume. Increase the amount of attenuation of 139 and 141 to lower the volume. When the switch 59 is operated, the attenuation amount of the attenuators 139 and 141 for the speakers 11 and 13 installed on the left side of the J4L room 9 is reduced to increase the volume, and the volume is increased for the speakers 12 and 13 installed on the right side of the J4L room 9. .1
The attenuation amount of the attenuators 140 and 142 corresponding to No. 4 is increased to reduce the volume. A digital signal derived from path 95 is connected to each attenuator 139 as determined by the fourth waveform.
It is determined that the electric power increased by ~14zKMF5 changes by one step R3.

(Left below) To perform the 4th table volume balance, from step gl to step z2 to z5Ky in Figure 16, switch 56 to
It is determined whether or not 59 has been operated. S,itch 56
If 1 KA was made, K is 22 steps, so STEP z
Move to 7, #JRn, if so step ztt
At this point, the force ν starts counting for a predetermined waiting time W3, for example, 0.5 seconds. In step z9, the front cloth f! It is determined whether the volume of the speaker 12 provided in i5 is the maximum, and if it is not the maximum, step z
Moving to lO, the volume is increased by one step R3. If the f value of the speaker 12 is the maximum, the process moves from step z9 to step gllK. In step sit d, it is determined whether the 'f amount of the speaker 11 provided on the front left part is the maximum or not, and if it is not the maximum, the volume is increased by one step R3 in steps z10 and z12. . step z13
Then, it is determined whether the volume of the speaker 14 provided in the rear cloth part is the minimum or not, and if it is not the minimum, step z14 is performed.
fm is decreased by 1R1v. step +1
In step 115, it is determined whether the volume of the speaker 13 provided on the rear left side is at the minimum level, and if not, the volume is decreased by one step R3 in step z166c. If it is determined in step z7 that the switch 56 has been operated not for the first time but continuously, the process moves to step z17, and it is determined whether or not the wait time of 0.5 seconds is being counted by the rc. It is.

If counting is not in progress, the waiting time is 0 in step z18.
A clocking operation of 9 times of 5 seconds is started, and then the process moves to step z9. At step z17, when the waiting time i0.5 seconds is being counted, the process moves to step z6 and ends the operation.

When it is detected in step z3 that the switch 57 has been operated, steps z27 to z3B, which are similar to steps z7 to 218 described above, are executed, and the speakers 11 and 12 provided at the front of the single room 90 are The volume of the rear speakers 13, 14 is increased.

When it is detected in step z4 that the switch 58 has been operated, step z4 sealed in steps z7 to z1g is executed.
7 to z5B are executed. This increases the sound k of the right speaker 12.14 and the left speaker 711.1.
3 volume is decreased. When it is detected in step z5 that the switch 59 has been operated, steps z7 to z1'8. Steps z67 to z78 corresponding to are executed. This results in the sound of the stone speaker 12.14 -
is decreased, and the volume of the pressure speakers 11.13 is set to 7AI.

Referring to FIG. 17, when the switch 56 is operated for less than a predetermined waiting time W3 at times t1 to 2 (2) as shown in FIG.
m is increased by K1 step R3 as shown in the 17th section, and the volume of the front left speaker 11 is increased by 1 step R3 as shown in FIG. 17 (6). On the other hand, the fit of the rear right speaker 14 is decreased by one step R3fe as shown in FIG. 17 173, and the volume of the rear left speaker 13 is also decreased by one step R3.

The time when the right switch 58 is operated at time [3 to '4] is shortened. At time [3-4].

It is less than the predetermined waiting time W3. At this time, the first
a+j as shown in Figure 7 I sub and Figure 17 (7)
The volume of the lj speaker 12 and the rear right speaker 14 increases, and the volume of the lj speaker 12 and the rear right speaker 14 increases, and the volume of FIG. 17 161 and! The volume of the front left speaker 11 and rear left speaker 13, which are respectively turned off in FIG. 17 (8), decreases.

When the rear switch 59 is operated from time t5 to t6 for a time equal to or longer than the waiting time W3, as shown by Hz+ in FIG. As shown in FIG. 17 (1b+) and FIG.
4 and later speaker 13 @17 figure (71 and 1st
As shown in FIG. 7 181, the number of rats increases by one step R3 for each waiting time W3. When the pairs of speakers 11 and 12 become adults, and when the speakers 13 and 14 become adults, even if the switch 57 is operated continuously, the mouse shape will be destroyed.◎ Switch 59 at time t as shown in FIG.
If βIK is operated continuously for a waiting time of W3 or more between 7 and [8], the sound of the front right speaker 12 and temporary speaker 14 will be VC-waiting as shown in FIG. 17 141 and FIG. 17, respectively. hour + 1jl W every a [1 stage R
It decreases by 3. In addition, the volume of the front seat speaker, speaker ll, and rear left speaker 13 are set as shown in Figure 17 (+11 and
Figure 7 (one step R for every waiting time w3 as shown in sub
3 It continues to increase. This is a kr work 1, 16th
Steps z67, z77, z7d, z69 to z76 in the diagram
This is done by executing.

As described above, according to the VC of the present invention, it is possible to control the sound quality using the logical signal, so the means for deriving the logical signal is designed to derive the desired logical signal by a simple operation. Therefore, it becomes possible to improve the operability as described above.

[Brief explanation of the drawing]

Figure 1 is a block diagram of an embodiment of the present invention, Figure 2 is a front view of the operation panel 22, Figure 3 is a specific electrical circuit diagram of the key manual device 20, and Figure 4 is the mode F selection switch. 70-Cheet τ-, No. 5 for explaining the operation according to the operation of 24.
The figure shows the case where the fan selector switch 31 is operated when the switch 25 fC for receiving the full-tone tone broadcast and the frequency tone broadcast is operated.
A brooch to explain the operation in Figure 6 p.
A flowchart for explaining the operation of the skimming process in FIG. 5, and FIG. 7 shows step m2 in FIG.
This is a brooch for explaining the ω1 operation of the preset skiman processing at 3Vc, and FIG. 8 is a diagram showing the state in which the switch 28 in FIG. Flowchart for explaining step n5a of tape 8 process #j, @Figure 9r
Switch 27 to make 1 Yo Amana Your Radio 15
Flowchart for controlling the first work of an amateur pregnant woman in step n3a of FIG. A concrete block diagram of the balancing medium clearance path 7, Fig. 11 and Fig. d12 EI weight control circuit 5
Figure 13 is a waveform diagram to explain the operation of fiimiJ circuit 5, Figure 14 is a waveform diagram to explain the 11 operations of circuit 6. Figure 15 is a waveform diagram for explaining the operation of circuit 6, and Figure d16 is a flow chart for explaining the operation of Sodo balance system circuit 7. , 1st
FIG. 7 is a waveform diagram for explaining the operation of the volume balance circuit 7. l...Shohata So-12...Receiver, 3...Tape recording/playback unit, 5...fI111IIIJ round circuit, 6.
・・Sound quality--circuit, 7・ii irises balancelltljml
! 11%% Room G-1, l 1N14...Speaker,
20... Key human power device, 22... Operation panel, 23
...Cassette extension port, 24...Mode selection switch, 31...Function selection switch, 39...
Display, 46; 47, 4g...Switch for f -Ill-, 49-53; 54--Switch for sound quality 111J-, 56; 56-59...F for volume puffiness Switch, 91,139-142... Attenuator, 96,106,125... Control circuit, 1OIN
105...Filter circuit agent Patent attorney Kei Nishi Part 11 Figure 12--N
--N
--N ■
%Akebono-

Claims (1)

[Claims] ? 7J! The method includes means for deriving a logical signal of a kind, and means for attenuating the level of the four-wave region of the Kucho Satoshi signal by a value corresponding to the logical signal in response to the logical signal. Sound quality control device mouth featuring