JPS6445898U - - Google Patents
Info
- Publication number
- JPS6445898U JPS6445898U JP14144187U JP14144187U JPS6445898U JP S6445898 U JPS6445898 U JP S6445898U JP 14144187 U JP14144187 U JP 14144187U JP 14144187 U JP14144187 U JP 14144187U JP S6445898 U JPS6445898 U JP S6445898U
- Authority
- JP
- Japan
- Prior art keywords
- envelope
- determining
- points
- data
- switching
- 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
- 238000010586 diagram Methods 0.000 description 1
Description
第１図はこの考案の一実施例に係るエンベロー
プ近似装置の構成図、第２図は第１図に示すエン
ベロープ近似装置の動作を示すフローチヤートで
ある。
１……エンベロープデータメモリ、２……エン
ベロープ近似回路、３……近似エンベロープメモ
リ、４……エンベロープデータ表示手段、５……
分割ポイント指定手段、６……切換点決定手段。
FIG. 1 is a block diagram of an envelope approximation device according to an embodiment of this invention, and FIG. 2 is a flowchart showing the operation of the envelope approximation device shown in FIG. DESCRIPTION OF SYMBOLS 1... Envelope data memory, 2... Envelope approximation circuit, 3... Approximate envelope memory, 4... Envelope data display means, 5...
Division point designation means, 6... switching point determination means.
Claims (1)
されるエンベロープ波形を切換点で特性が切り換
わる限られた数の関数波形で近似するエンベロー
プ近似装置において、 与えられたエンベロープデータを表示するエン
ベロープ表示手段と、 表示された上記エンベロープデータを時間軸方
向に分割するポイントを指定する分割ポイント指
定手段と、 指定された上記ポイントにより分割されたそれ
ぞれの区間のエンベロープを最適に近似する関数
を決定し、隣り合う区間において決定された上記
関数の交点を切換点として決定する切換点決定手
段と、 を有することを特徴とするエンベロープ近似装置
。[Claim for Utility Model Registration] In an envelope approximation device that approximates an envelope waveform expressed by envelope data of a given musical tone with a limited number of function waveforms whose characteristics switch at switching points, an envelope display means for displaying the above-mentioned envelope data; a division point specifying means for specifying points at which the displayed envelope data is divided in the time axis direction; and an envelope for each section divided by the specified points is optimally approximated. An envelope approximation device comprising: switching point determining means for determining a function and determining an intersection of the determined functions in adjacent intervals as a switching point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14144187U JPH0633517Y2 (en) | 1987-09-16 | 1987-09-16 | Envelope approximation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14144187U JPH0633517Y2 (en) | 1987-09-16 | 1987-09-16 | Envelope approximation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6445898U true JPS6445898U (en) | 1989-03-20 |
| JPH0633517Y2 JPH0633517Y2 (en) | 1994-08-31 |
Family
ID=31406501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14144187U Expired - Lifetime JPH0633517Y2 (en) | 1987-09-16 | 1987-09-16 | Envelope approximation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633517Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281098A (en) * | 1988-09-17 | 1990-03-22 | Casio Comput Co Ltd | Musical sound producing device for electronic musical instrument |
-
1987
- 1987-09-16 JP JP14144187U patent/JPH0633517Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281098A (en) * | 1988-09-17 | 1990-03-22 | Casio Comput Co Ltd | Musical sound producing device for electronic musical instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633517Y2 (en) | 1994-08-31 |
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