JPH032718U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 shows the volume and volume level according to one embodiment of this invention.
A block diagram of the sound quality adjustment device, FIG. 2 is an explanatory diagram of data stored in the memory of the microcomputer in FIG. 1, and FIGS. 3 to 5 are flowcharts showing the operation of the microcomputer in FIG. 1. 6 is a time chart explaining the operation when adjusting the volume in FIG. 1, and FIG. 7 is a time chart explaining the operation when adjusting the bass gain in FIG. 1. Explanation of main symbols, 10: 1st electronic volume,
16: second electronic volume, 18: third electronic volume, 2: microcomputer, 24: rotation pulse generating means, 26: rotation knob.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) It has a variable means for inputting level setting data and varying the level of the signal, and a rotary operating member, and the rotary operating member rotates by a fixed amount in the forward (reverse) direction. Rotation pulse generation means outputs a forward rotation pulse (reverse rotation pulse) every time the rotation pulse is rotated; A clock means clocks the passage of time from approximately the same time as the time when level setting data is input to the level variable means; a determination means for determining whether the time measured by the timer at the time when the rotation pulse (reverse pulse) is inputted is longer or shorter than a predetermined reference time; and a storage means for storing current level setting data for the level variable means; When a forward rotation pulse (reverse rotation pulse) is input and the determination means determines that the time is longer than a predetermined reference time, the current level setting data stored in the storage means is input by a predetermined first step amount. On the other hand, when the determining means determines that the time is shorter than a predetermined reference time, the current level setting data stored in the storage means is increased (decreased) by a predetermined second step amount, which is larger than the first step amount. Increase (decrease) by amount
and control means for outputting changed level setting data to the level variable means to perform level variable control. (2) It has level variable means for inputting level setting data and varying the gain for the signal plus or minus based on the flat level according to the level setting data, and a rotary operating member, which rotates in the forward direction or A rotation pulse generation means that outputs a forward rotation pulse or a reverse rotation pulse each time the rotation is rotated by a certain amount in the reverse direction, and a time elapsed time is measured from approximately the same time when level setting data is input to the level variable means. a determining means for determining whether the time measured by the timing means at the time of inputting the forward rotation pulse or the reverse rotation pulse is longer or shorter than a predetermined dead time; and storing current level setting data for the level variable means. A storage means and a forward rotation pulse or a reverse rotation pulse are inputted, and at this time, if the current level setting data stored in the storage means is not flat level data, the current level setting data stored in the storage means is inputted to a predetermined level. increase or decrease by the amount of steps,
Level setting data after the change is output to the level variable means to perform level variable control, and when the current level setting data stored in the storage means is flat level data, the determining means determines that the dead time is longer than a predetermined dead time. control means for increasing or decreasing the current level setting data stored in the storage means by a predetermined step amount only when the judgment is being made; and displaying the setting level based on the current level setting data stored in the storage means. A signal level adjustment device comprising: a display means for performing the following;