JPS6376893U - - Google Patents
Info
- Publication number
- JPS6376893U JPS6376893U JP1986170534U JP17053486U JPS6376893U JP S6376893 U JPS6376893 U JP S6376893U JP 1986170534 U JP1986170534 U JP 1986170534U JP 17053486 U JP17053486 U JP 17053486U JP S6376893 U JPS6376893 U JP S6376893U
- Authority
- JP
- Japan
- Prior art keywords
- envelope
- data
- switching point
- errors
- sum
- 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 2
Description
第１図はこの考案の一実施例に係るエンベロー
プ近似装置の全体構成図、第２図はエンベロープ
近似回路の構成例を示す図、第３図は実施例にお
ける最適切換点の選択の原理を説明する図、第４
図は直線切換点解析部の構成例を示す図、第５図
はエンベロープ近似回路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、２２……直線切換点解析部。
Fig. 1 is an overall configuration diagram of an envelope approximation device according to an embodiment of this invention, Fig. 2 is a diagram showing an example of the configuration of an envelope approximation circuit, and Fig. 3 explains the principle of selecting the most appropriate switching point in the embodiment. Figure 4
The figure shows an example of the configuration of the linear switching point analysis section, and FIG. 5 is a flowchart showing the operation of the envelope approximation circuit. 1... Envelope data memory, 2... Envelope approximation circuit, 3... Approximate envelope memory, 22... Linear switching point analysis section.
Claims (1)
エンベロープ波形を切換点で方向が変わる限られ
た数の直線で近似するエンベロープ近似装置にお
いて、 直線データを発生する直線データ発生手段と、 上記直線データ発生手段からの直線データとエ
ンベロープデータとの誤差の総和を算出する算出
手段と、 上記誤差の総和を実質上最小化する切換点を決
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
。[Claims for Utility Model Registration] In an envelope approximation device that approximates an envelope waveform expressed by given envelope data with a limited number of straight lines whose direction changes at a switching point, a straight line data generating means for generating straight line data. and calculating means for calculating the sum of errors between the linear data from the linear data generating means and the envelope data, and switching point determining means for determining a switching point that substantially minimizes the sum of the errors. An envelope approximation device featuring:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986170534U JPH0733272Y2 (en) | 1986-11-06 | 1986-11-06 | Envelop approximation device |
| US07/408,412 US4958552A (en) | 1986-11-06 | 1989-09-14 | Apparatus for extracting envelope data from an input waveform signal and for approximating the extracted envelope data |
| US07/758,529 US5200567A (en) | 1986-11-06 | 1991-09-06 | Envelope generating apparatus |
| US08/232,879 US5548080A (en) | 1986-11-06 | 1994-04-25 | Apparatus for appoximating envelope data and for extracting envelope data from a signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986170534U JPH0733272Y2 (en) | 1986-11-06 | 1986-11-06 | Envelop approximation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6376893U true JPS6376893U (en) | 1988-05-21 |
| JPH0733272Y2 JPH0733272Y2 (en) | 1995-07-31 |
Family
ID=31105353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986170534U Expired - Lifetime JPH0733272Y2 (en) | 1986-11-06 | 1986-11-06 | Envelop approximation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733272Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132317A (en) * | 1974-09-12 | 1976-03-18 | Kawai Musical Instr Mfg Co | |
| JPS57151998A (en) * | 1981-03-16 | 1982-09-20 | Casio Computer Co Ltd | Envelope control system for electronic musical instrument |
| JPS5958490A (en) * | 1982-09-28 | 1984-04-04 | 富士通株式会社 | Voice recognition system |
| JPS59164092U (en) * | 1983-04-18 | 1984-11-02 | 株式会社ケンウッド | Waveform data generator |
-
1986
- 1986-11-06 JP JP1986170534U patent/JPH0733272Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132317A (en) * | 1974-09-12 | 1976-03-18 | Kawai Musical Instr Mfg Co | |
| JPS57151998A (en) * | 1981-03-16 | 1982-09-20 | Casio Computer Co Ltd | Envelope control system for electronic musical instrument |
| JPS5958490A (en) * | 1982-09-28 | 1984-04-04 | 富士通株式会社 | Voice recognition system |
| JPS59164092U (en) * | 1983-04-18 | 1984-11-02 | 株式会社ケンウッド | Waveform data generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0733272Y2 (en) | 1995-07-31 |
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