JPS63146099A - Melody generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an alarm electronic timepiece having the function of playing a melody. More specifically, it relates to means for obtaining a scale for playing a melody.

FIG. 1 is a block diagram showing the general configuration of an electronic watch with an alarm. First, the heart of the watch is the oscillation circuit 1 that uses a crystal oscillator, and its oscillation frequency is 2.
It has a value of n. That is, 65°536Hz, or 1
31,072Hz etc. are common. Next, this oscillation output is passed through a frequency divider circuit 2 of more than 10 stages, which successively reduces the frequency by 2.
It is finally output as a 1 second signal. The second signal is converted to sexagesimal in the counter circuit 3, or
12 and integrated into hour, minute, and second signals. Each time signal is further encoded for digital display in a decoder 4, and is displayed on a display 6 such as a liquid crystal via a driver 5.

On the other hand, for the alarm function, there is also an alarm time setting circuit 7, into which the alarm time is input by an external switch. The input signal is encoded into a tatara, and is compared with the current time in a time coincidence detection circuit 8. When a coincidence occurs, an electric tone-to-tone converter 9 notifies the encoder as a buzzer. The above is a normal configuration of an electronic watch with an alarm, but the notification sound produced by such a configuration is limited to a single pitch, and is very practical.

Therefore, in the present invention, the special features of an electronic clock with an alarm,
That is, the electroacoustic conversion function that plays a melody on an alarm is realized by considering functionality and hobbies and preferences.

FIG. 2 is a detailed block diagram of the electroacoustic transducer section of FIG. 1 according to the present invention. That is, the oscillation circuit 10, which is the same as the time standard shown in FIG. 1, is used as a reference signal source, and the output thereof is connected to a programmable counter 11 which takes out the divided frequency appropriately corresponding to the musical scale. The divided output of the programmable counter can be used to record any song. It changes sequentially according to instructions from a memory circuit 15 such as a ROM. Reading of the memory is performed based on the time standard signal, the frequency division output is obtained by the frequency division circuit 14, and the address of a part of the memory is specified, that is, the frequency division number that determines the pitch of the song. The read speed of the memory, that is, the tempo of the song or the length of the sound, is controlled by this frequency division output. Therefore, the output of the programmable counter 11 is a series of a plurality of frequencies having different durations, that is, an electrical output corresponding to a melody. Next, this output is transformed into a drive waveform suitable for the speaker 13 through the driver 12, and then after being applied with an appropriate amplifier,
The sound is output from the speaker 13.

As already mentioned, the present invention is characterized by the fact that the time standard and scale standard are the same for the alarm that plays such a melody. The feature is that the frequency-divided output obtained by performing the frequency calculation is a C note. Table 1 shows the frequency for each note of the chromatic scale based on international conventions and C based on the standard used for clocks.
6 tones = 1024H2, C7 tones = 2048H, each frequency of the chromatic scale when z, as well as the standard divided output frequency of the clock, etc. are compared. What you can see from this table is that the divided output 2 obtained from the clock's standard frequency 2"1-1z
”=1024Hz, or 211=2048H
z is the international convention C6=1047Hz, C,=
This is very close to 2094Hz.

Therefore, the frequency divided output is 1024 Hz, or 204 Hz.
It can be said that it is desirable to use 8 Hz as the approximate C sound of a clock alarm. Next, we form a chromatic scale based on this approximate C note, and compare its frequency with the frequency of the integer frequency division output of the clock standard 165.536Hz or the clock standard 131.072Hz, and these are also very close. It turns out that the value exists.

Table 1 For both standards, a chromatic scale can be constructed with a maximum division ratio of 64. Moreover, since the maximum pitch is less than % pitch, it is in a range that cannot be discerned by the untrained ear. In other words, the minimum necessary scale for performance as a scale used for a clock alarm can be obtained by dividing the frequency by 64 at the maximum, and this is also the feature of the present invention. In other words, by using the clock standard as the musical scale standard, it is possible to achieve the necessary and sufficient effects with the minimum necessary design, not only in the construction and manufacture of practical circuits, but also in the actual use of alarms. It is something that can be done. Of course, it goes without saying that if the frequency division ratio is increased to 128 times this value and a chromatic scale is formed in the same way, a more accurate pitch can be obtained than by the means of the present invention. However, even if the alarm scale necessary for the present invention has some blackness, it is not a problem.On the contrary, the configuration of the practical melody circuit becomes complicated and the number of elements increases, so the electronic circuit This is not a desirable state of the structure (it will probably be).

As described above, the present invention forms a musical scale using the standard for clocks, and its circuit configuration is the simplest, and has sufficient performance to play a melody as an alarm sound. It provides the means. Therefore, the present invention can bring out advantages in both manufacturing and use of an electronic timepiece with an alarm, and is effective in improving the functions, hobbies, etc. of the electronic timepiece.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an electronic timepiece with an alarm, and FIG. 2 is a block diagram showing the configuration of the electrical pass/fail converter shown in FIG. 1...Oscillation 2...Divide 3...Counter 4
... Decoder 5 ... Driver 6 ... Display 7 ... Alarm setting 8 ... Match detection 9 ...
Electric pass/fail conversion 10...Oscillation 11...Programmer pull counter 12...Driver 13...Speaker 14...
・Divide 15...Memory. The above Figure 2 Procedural amendment (voluntary) Mr. Kunio Ogawa, Commissioner of the Patent Office, Patent side (A), issued on 19th December 1988
ゝ-2. Title of the invention: Melody - Scale Formation Circuit 3; Relationship with the Amended Person's Case Applicant: 2-4-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo (23G); Representative Director of Seiko Epson Corporation; Tsuneya Nakamura 4; Agent address: 2-6-21-5 Kyobashi, Chuo-ku, Tokyo 104, Description subject to amendment 1, Title of the invention: Melody-Scale forming circuit 2, Claims: Frequency division ratio data corresponding to the scales constituting Robie. 3. Detailed Description of the Invention The present invention relates to an electronic circuit having the function of playing a melody. More specifically, it relates to means for obtaining a scale for playing a melody. FIG. 1 is a block diagram showing the general configuration of an electronic clock with an alarm, which is an electronic circuit. First, the heart of the timepiece is an oscillation circuit 1 using a crystal oscillator, and its oscillation frequency has a value of approximately 2' (n is a natural number). That is, 65,536Hz or 131,072Hz
etc. are common. This oscillating output then successively reduces its frequency to A10
The signal enters several stages of frequency dividing circuits 2, and is finally taken out as a 1-second signal. The second signal is sent to counter circuit 3 at 6
It is converted to 0 or 12 and integrated into hour, minute, and second signals. Each time signal is further encoded for digital display in a decoder 4, and is displayed on a display 6 such as a liquid crystal via a driver 5. On the other hand, for the alarm function, there is also an alarm time setting circuit 7, into which the alarm time is input by an external switch. The human input signal is immediately encoded and compared with the current time in a time loss detecting circuit 8, and when a loss is detected, an electric tone to customer converter 9 notifies you with a buzzer sound. The above is the normal configuration of an electronic watch with an alarm. The present invention realizes a melody scale forming circuit that forms a scale frequency with less error relative to the frequency specified in the international convention, in order to make an electronic circuit such as the above-mentioned electronic clock with an alarm play a melody. . FIG. 2 is a block diagram of the melody-scale forming circuit according to the present invention, looking in detail at the first electric augment conversion part. In Figure 2, the time mark of Figure 1! 1. A programmable counter 1 which uses the same oscillation circuit 10 as a reference signal source and extracts its output as a divided frequency corresponding to a musical scale as appropriate.
It is connected to 1. The frequency-divided output of the programmable counter changes successively according to instructions from a memory circuit 15 such as a ROM that stores an arbitrary song. For memory reading, etc., the frequency division circuit 14 obtains a frequency divided output based on the standard time signal, and the address of a part of the memory is specified, that is, the frequency division number that determines the pitch of the song. The read speed of the memory, that is, the tempo of the song or the length of the sound, is controlled by this frequency division output. Therefore, the output of the programmable counter 11 is a series of a plurality of frequencies having different durations, that is, an electrical output corresponding to a melody. Next, this output is transformed into a driving waveform suitable for the speaker 13 through the driver 12, and then is output as sound from the speaker 13 after being connected to a suitable amplifier. Now, in an alarm that plays such a melody, in the present invention, the standard frequency is 1/(64X2')(
(m is an integer) A characteristic feature is that the frequency-divided output after frequency division is set to the base<a scale, for example, the C note. Table 1 shows the frequency for each note of the scale based on international conventions and 1/(64X2 based on the standard frequency of 2'Hz).
''') The divided frequency corresponds to C note and C6 note -10
24Hz, C, tone = 2048 ITZ The frequency of the equally divided average rate scale for watches and the standard frequency of 2°Hz in the programmable counter 11 are stored in the memory circuit 1.
5 is a comparison of the frequency when the frequency is divided according to the frequency division number data stored in No. 5. What you can see from this table is that
Divided output 2 ” obtained from target r1λ frequency 2'Hz =
1024 Hz, or 2”=2048Hz,
International convention C6=1047H2, C7=209
4 Ht. Therefore, the frequency divided output is 1024 Hz, or 2048 Hz.
It can be said that it is desirable to set Hz to the approximate C note of the melody scale. Then, based on this approximate C note, an equally divided average rate scale is formed, and its frequency and the standard frequency 65,
536Hz or standard frequency 131,072Hz
Comparing the frequencies obtained by dividing the frequency by an integer using an integer between 64×21'' and 6/IX2''-', it can be seen that these values also have very close values. In Table 1, the maximum pitch is less than two pitches, so it is in a range that cannot be discerned by the untrained ear. In other words, the minimum necessary scale in terms of performance for a melody can be obtained by this 1/(64x2') frequency division, and this is also the feature of the present invention. That is, 2'Hz
By making this the standard for musical scales, the necessary and sufficient effects can be achieved with the minimum necessary design, not only in the construction and construction of practical circuits, but also in the actual use of melodies. . Even if the melody scale necessary for the present invention is slightly distorted, it is not a problem.On the contrary, since the configuration of the practical melody circuit becomes complicated and the number of elements increases, the electronic circuit This would no longer be a desirable configuration. As described above, the present invention forms a musical scale using the standard frequency of 2'Hz used for watches, and its circuit configuration is the most planarized, and moreover,
This provides a means with sufficient performance to play a melody as an alarm sound. 4. Brief Description of the Drawings FIG. 1 is a block diagram showing the configuration of the electronic alarm unit 31, and FIG. 2 is a block diagram showing the configuration of the electroacoustic transducer portion of FIG. 1. 1...Oscillation 2...Divide 3...Counter 4
... Decoder 5 ... Driver 6 ... Display 7 ... Alarm setting 8 ... Match detection 9 ...
Electroacoustic conversion 10...Oscillation 11...Programmable counter 12...Driver 13...Speaker 14...
・Divide by 15...More than memory

Claims (1)

[Claims] Oscillation frequency 65,536H, which is the time standard for electronic wristwatches
z, or a frequency of 1,024 Hz, which is obtained by dividing 131,072 Hz by 64, or a chromatic scale in which the C note is 2,048 Hz, is formed by the frequency division output of the time standard (frequency division ratio ≦ 64), and the melody is created. A melody generating device that has the function of playing music.