JPS63183719U - - Google Patents
Info
- Publication number
- JPS63183719U JPS63183719U JP7383087U JP7383087U JPS63183719U JP S63183719 U JPS63183719 U JP S63183719U JP 7383087 U JP7383087 U JP 7383087U JP 7383087 U JP7383087 U JP 7383087U JP S63183719 U JPS63183719 U JP S63183719U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- fourier transform
- digital signal
- discrete fourier
- digital filter
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Complex Calculations (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第1図は本考案の一実施例に係わるデイジタル
信号の周波数特性調整回路の構成を示すブロツク
図、第2図は第1図の係数可変デイジタル・フイ
ルタ11の構成の一例を示すブロツク図、第3図
は第1図の回路による振幅―周波数特性の調整機
能を説明するための特性図である。
IN……調整対象のデイジタル信号の入力端子
、11……係数可変のデイジタル・フイルタ、1
2……離散的フーリエ変換回路、13……ピーク
周波数検出回路、14……係数生成回路、OUT
……調整済みデイジタル信号の出力端子。
FIG. 1 is a block diagram showing the configuration of a digital signal frequency characteristic adjustment circuit according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of the configuration of the variable coefficient digital filter 11 shown in FIG. FIG. 3 is a characteristic diagram for explaining the amplitude-frequency characteristic adjustment function by the circuit of FIG. 1. IN...Input terminal for digital signal to be adjusted, 11...Digital filter with variable coefficient, 1
2...Discrete Fourier transform circuit, 13...Peak frequency detection circuit, 14...Coefficient generation circuit, OUT
...Output terminal for adjusted digital signal.
Claims (1)
ジタル・フイルタと、 前記入力デイジタル信号を離散的フーリエ変換
する離散的フーリエ変換回路と、 この離散的フーリエ変換によつて得られた各周
波数成分のうち最大の振幅を与えるものを検出す
るピーク周波数検出回路と、 この検出されたピーク周波数に応じた値の係数
値を生成して前記デイジタル・フイルタに供給す
る係数生成回路とを備えたことを特徴とするデイ
ジタル信号の周波数特性調整回路。[Claims for Utility Model Registration] A digital filter with variable coefficients that filters an input digital signal; a discrete Fourier transform circuit that performs a discrete Fourier transform on the input digital signal; It includes a peak frequency detection circuit that detects the one that gives the largest amplitude among each frequency component, and a coefficient generation circuit that generates a coefficient value corresponding to the detected peak frequency and supplies it to the digital filter. A frequency characteristic adjustment circuit for digital signals, characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7383087U JPS63183719U (en) | 1987-05-18 | 1987-05-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7383087U JPS63183719U (en) | 1987-05-18 | 1987-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63183719U true JPS63183719U (en) | 1988-11-25 |
Family
ID=30918507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7383087U Pending JPS63183719U (en) | 1987-05-18 | 1987-05-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63183719U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5735764A (en) * | 1980-08-12 | 1982-02-26 | Ishikawajima Harima Heavy Ind Co Ltd | Fundamental frequency measuring device |
JPS6243774A (en) * | 1985-08-21 | 1987-02-25 | Toshiba Corp | Data processor |
-
1987
- 1987-05-18 JP JP7383087U patent/JPS63183719U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5735764A (en) * | 1980-08-12 | 1982-02-26 | Ishikawajima Harima Heavy Ind Co Ltd | Fundamental frequency measuring device |
JPS6243774A (en) * | 1985-08-21 | 1987-02-25 | Toshiba Corp | Data processor |
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