JPS6310508Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a display device for a tuner.

Tuners, such as those used to tune stringed instruments such as guitars, traditionally measure and output the string sound frequency corresponding to each string as an average value within a range of 1 cent, and this output is used as an indicator using an analog meter. However, this kind of display has poor accuracy due to resolution limits.
Moreover, it is difficult to read the indicated value accurately due to the deflection of the pointer corresponding to the output value, and the slow response speed has the disadvantage of always displaying the average value within a certain time range.Furthermore, digital display is available as an alternative. However, there were disadvantages such as difficulty in determining whether the measured value was a lower value or an upper value with respect to the reference value.

To be more specific, the string tone frequency, that is, the signal frequency input to the tuner, is not always constant;
The period from the rising edge to the falling edge when a string is plucked generally fluctuates as shown in Figure 1, and tuning is performed using the measured value in the stable state as a guide, but strictly speaking, this stable period Even when measured in 100msec increments, there are fluctuations, and the characteristics of these fluctuations and the duration of the stable period are greatly influenced by the way the strings are plucked and the performance of the tuner itself.

For example, in the case of guitars, the range of fluctuation ranges from within ±1 cent to around ±3 cents, and for this reason, high-end guitars with a stable period of ±1 cent have a resolution of 1 cent. It is necessary to display the display, but with relatively low-grade guitars, the stability period is short and the range of fluctuation is large, so if the resolution is 1 cent, the display itself will constantly fluctuate within a few cents, making it difficult to check whether the tuning has been achieved. There is a risk that it will not be possible. In other words, even if it were the same guitar, the resolution and, by extension, the display means had to be changed between high-end and low-end guitars.

In view of the above-mentioned drawbacks of the conventional technology, this invention uses a large number of lighting displayable segments arranged over a predetermined range as a display means, and in particular, within a range of several cents around the 0 point of tuning, segments that individually correspond to the fluctuation range are used. are sequentially arranged side by side, and these are illuminated and displayed in accordance with the range of variation.

Hereinafter, one embodiment of the display device according to this invention will be described in detail with reference to FIG. 2 and FIGS. 3a, b, and c.

FIG. 2 shows the display pattern of this embodiment device. In this FIG .
+5, +10, +20, +5 on the upper value side of 0, -50
Each instruction value display 11 of 0 is displayed, and a liquid crystal display pattern 12 is arranged corresponding to each position.

The liquid crystal display pattern 12 is constructed by using a large number of liquid crystal display segments and arranging them as follows. That is, the instruction value display 11 is -5 to
Within the range of +5, segment 13 within the 1 cent range, segment 14 within the 2 cent range, etc.
Segments 17 within a 5 cent range are sequentially increased in width and arranged in parallel in the vertical direction, -5 to -10, -
Within each range of 10 to -20, -20 to -50, -50 or less, segments 18, 19, 20, 21,
+5~+10, +10~+20, +20~+50,
Segment 22,2 within each range of +50 or more
3, 24, and 25 are arranged in series in the left and right direction, respectively. Also, each of these segments 1
Reference numerals 3 to 25 code-convert the measurement data output from a string tone frequency measuring section (not shown) by a decoder 26, and selectively light them individually.

Therefore, in the above configuration, if the measured data output of the target string is within the range of -10 to -20 cents at the beginning of tuning, the corresponding segment 19 is lit, and the tuning operation is performed using this as a guide. If the target string is, for example, a guitar with a fluctuation range of ±3 cents, each segment 17, 16, 15 in the range of ±5 cents to ±3 cents will be lit at the same time. Figures 3a, b, and c show each lighting mode, and Figure 3a has a fluctuation width of ±5 cents, Figure 3b has a fluctuation width of ±3 cents, and Figure 3c has a fluctuation width of ±1 cents. In each case of cents, if a specific fluctuation width is selected within the required ±n cent range around the reference value, then each segment within the ±n cent range over the selected fluctuation width All will be lit, and the narrowest lit segment will indicate the tuned state of the target string.

As detailed above, according to this invention, within the range of fluctuation width n cents around the reference value, segments corresponding individually to each fluctuation width of n cents or less,
They are arranged in sequence within the same range of indications, and the tuning status is displayed in the range of fluctuation relative to the tuning 0 point, so it is easy to tune to the highest tuning state unique to the stringed instrument being tuned, and the tuning status can be easily tuned to the highest tuning state unique to the stringed instrument being tuned. There are no problems such as the indication swinging within the range and making it impossible to check the tuning status, and as a result, the tuning display can be easily fixed on everything from relatively low-grade stringed instruments to high-end stringed instruments, and the tuning status can be accurately confirmed. It is something that can be grasped.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing the time course of string sound frequency;
FIG. 2 is a schematic configuration diagram showing an embodiment of the display device according to the invention, and FIGS. 3 a, b, and c are explanatory diagrams showing the display state of the main parts of the same. 10 ...Display surface, 11...Indication value display, 12 ...
...Liquid crystal display pattern, 13-25...display segment.

Claims (1)

[Scope of utility model registration request] A tuner that measures the sound source frequency and displays the measured data in cents has a large number of segments that can be displayed by lighting. They correspond to the width individually and are arranged sequentially in accordance with the instruction display of the same range, and outside the n cent range, they are arranged in cent units as appropriate, and the tuning status is displayed in the range of fluctuation relative to the tuning 0 point. A tuner display device characterized by: