JPS5947820A - Device for correcting audible sense - Google Patents

Abstract

PURPOSE:To correct automatically the audible sense, by incorporating a graphic equalizer in a preamplifier and adjusting an equalizer in response to a level of a variable resistor. CONSTITUTION:A signal inputted from a preamplifier input device 4 is inputted to a selector 5 for attaining the selection of inputs. This signal is supplied to a graphic equalizer 6 via a variable resistor 1. A level detector 7 detects an output level of the variable resistor, accesses a storage device in which audible sense correcting data is stored and data corresponding to an output level is extracted from the device 9. The data are inputted to a variable resistor selecting controller 10 to select the variable resistor of the graphic equalizer 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hearing correction device that incorporates a graphic equalizer into a preamplifier and automatically adjusts the graphic equalizer to W.1 over the entire band according to the volume level.

Conventionally, the loudness control device lJ has been constructed with a circuit as shown in FIG. Center tuff 3 is set up on the 11th stage 1, and R
V, is the resistance value up to the maximum value of volume 1, R-Vt
/I'i The resistance value is up to the minimum part of volume 1.

Now, when the loudness switch 2 is set to the ~(JFFF state), the capacitor C7 is short-circuited, the frequency characteristic becomes flat, and no audible correction is performed.On the other hand, when the switch 2 is turned on, the input signal becomes low When the frequency is high, capacitors C+ and ?J are open, and when the frequency is extremely low, capacitor C2 is also open, and the output is the combined resistance of the maximum resistance value ζV1 and the minimum resistance value RV, and the maximum resistance value ζV. The ratio of the combined resistance of the resistance R2 and the maximum paper tail 11α
RV, and the volume 1 is determined by the ratio of Rt-VC.
Therefore, the amount of boost in the low range changes.

Furthermore, when the input signal has a high frequency, the capacitor C5 is in an open state and the capacitor CtN is short-circuited, and the output is determined by the ratio of the combined resistance of &, RVt, and RVt. Even higher frequency a) and capacitor C8
Since the output is determined by the ratio of the combined resistance of JtI, i<T2, RV2, and RV, and RV, the amount of boost in the high range changes depending on the position of the polygon 1.

Since the conventional auditory sensation correction device is configured with the IT-C circuit as described above, accurate correction cannot be performed. i/c
, the 1t sleeve stopper is only available when the volume sewing is small]
There were some shortcomings, such as not being properly prepared.

Therefore, the present invention was made to eliminate the drawbacks of the conventional technology, and an embodiment of the present invention is described below. This will be explained with reference to Figure 2 Q.

1) A signal input from a preamplifier input device 4 such as I-1ONO, TUNER, AUX, TAPE, etc. is input to an input selector 5, and the input is selected. From now on,
The signal is input to the volume 1, and its output is sent to the graphicalizer 6 and the digit or output level detection device surface 7.
It's human power.

In the position or output level detection shield 7, the volume digit 16
Also, the volume output level &E! i! By inputting the output level of the level detection device 17 to the control circuit, the storage device 9 in which auditory sensation correction data is stored is accessed.
Data corresponding to the volume position or V, ↓output level is output from the memory Vi fit 9.

The data has a volume ratio of +1ill *'+1,
) Zeu'+': When 10 is filled in, the volume of graphicalizer 6 is selected. Furthermore, the level of the graphicalizer 6 on the level open side j device 1 is: t
By inputting ill rAI , an audible-corrected output with a volume of 1 and 16 is obtained.

In addition, in the above embodiment, L1~' of volume 1 is
Alternatively, although the graphicalizer 6 is controlled by the output level, it is also conceivable to control the sound outputted from the speaker all at once by collecting it with a microphone. Also,
As a method of controlling the equalizer 6 by increasing the volume 1 and level VC, the output of the graphic equalizer 6 may be input to the volume 1 as shown in FIG. 3, and the same effect as in the above embodiment can be obtained. play.

Since the configuration is as described above, more accurate hearing correction can be performed over the entire band. Also, automatically ii
Since l,',l adjustment is performed, there is no need to change the ei feeling correction switch.

[Brief explanation of drawings]

・Figure 3J shows 1, T-Later hearing aid M: circuit, Figure 2 is an example of the present invention +>fit, and Figure 413 is another embodiment of the present invention. 1... Volume 2... Switch 3... Center tap 4... Preamp manual power 5... Human power selector 6... Graphicalizer 7...
(fZ #15' or level detection device u8...
Memory control circuit 9...Memory 10...Volume selection fliiJ control device 11
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Claims (1)

[Claims] A volume for controlling the output of the amplifier, a detection stage for detecting the position or output level of the volume, and a b1 storage device storing auditory correction data corresponding to the position or output level of the volume, and the detection means With the signal output by the front B.B. A hearing correction device characterized by automatically performing correction.