JPS54107723A - Electronic musical instrument - Google Patents
Electronic musical instrumentInfo
- Publication number
- JPS54107723A JPS54107723A JP1452678A JP1452678A JPS54107723A JP S54107723 A JPS54107723 A JP S54107723A JP 1452678 A JP1452678 A JP 1452678A JP 1452678 A JP1452678 A JP 1452678A JP S54107723 A JPS54107723 A JP S54107723A
- Authority
- JP
- Japan
- Prior art keywords
- value
- frequency information
- change frequency
- current value
- numerical values
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electrophonic Musical Instruments (AREA)
Abstract
PURPOSE: To obtain portamento effect tones by providing means of adding correction values to the abovementioned change frequency information numerical values at specified timings and forming new change frequency information numerical values.
CONSTITUTION: With the change frequency information numerical value F' being inputted to the B input end of a subtractor 14 as a current value and the numerical value being inputted to the A input end of the subtractor 14 as a target value FB, the value corresponding to the difference between this target value FB and the current value F' is subsequently added as correction value to the current value F' each time when portamento clock PCL is generated, whereby the current value F' is subsequently changed. Such operation is repeatedly performed until the current value F' coincides with the target value FB, i.e., until the value of the differntial signal outputted from the subtractor 14 becomes zero, whereby the change frequency information numerical values F' changing subsequently from the start value FA toward the target value Fa are formed and by using these subsequently changing change frequency information numerical values F', the pitch controlling of the musical tones being produced is accomplished. Thereby, portamento effect tones are obtainable from a sound system 7.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1452678A JPS54107723A (en) | 1978-02-10 | 1978-02-10 | Electronic musical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1452678A JPS54107723A (en) | 1978-02-10 | 1978-02-10 | Electronic musical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54107723A true JPS54107723A (en) | 1979-08-23 |
| JPS6137639B2 JPS6137639B2 (en) | 1986-08-25 |
Family
ID=11863558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1452678A Granted JPS54107723A (en) | 1978-02-10 | 1978-02-10 | Electronic musical instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54107723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4920851A (en) * | 1987-05-22 | 1990-05-01 | Yamaha Corporation | Automatic musical tone generating apparatus for generating musical tones with slur effect |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01160738U (en) * | 1988-04-28 | 1989-11-08 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146321A (en) * | 1974-04-29 | 1975-11-25 |
-
1978
- 1978-02-10 JP JP1452678A patent/JPS54107723A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146321A (en) * | 1974-04-29 | 1975-11-25 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4920851A (en) * | 1987-05-22 | 1990-05-01 | Yamaha Corporation | Automatic musical tone generating apparatus for generating musical tones with slur effect |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6137639B2 (en) | 1986-08-25 |
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