JPS6244269U - - Google Patents
Info
- Publication number
- JPS6244269U JPS6244269U JP13618085U JP13618085U JPS6244269U JP S6244269 U JPS6244269 U JP S6244269U JP 13618085 U JP13618085 U JP 13618085U JP 13618085 U JP13618085 U JP 13618085U JP S6244269 U JPS6244269 U JP S6244269U
- Authority
- JP
- Japan
- Prior art keywords
- input signal
- frequency
- filters
- amplitude
- bandpass filters
- 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 1
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
第１図は本考案の実施例の構成を示すブロツク
図、第２図は第１図におけるバンドパスフイルタ
の中隣り合うフイルタの周波数特性と入力信号が
周波数ｆＲで入力された場合の例であり、横軸は
周波数、縦軸はフイルタの周波数特性値を示す図
である。
１……入力信号、２……バンドパスフイルタ、
３……検波回路、４……周波数、振幅補正演算部
。
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is an example of the frequency characteristics of adjacent filters in the bandpass filter in FIG. 1 and the case where the input signal is input at frequency fR. , the horizontal axis shows the frequency and the vertical axis shows the frequency characteristic value of the filter. 1...Input signal, 2...Band pass filter,
3...Detection circuit, 4...Frequency and amplitude correction calculation section.
Claims (1)
の振幅と周波数を検出する回路において、隣り合
う２つのフイルタの出力レベルの相対値から、前
記２つのバンドパスフイルタの中心周波数の間を
フイルタの特性により補間して入力信号周波数を
求め同時に振幅もフイルタの特性により補正する
ことを特徴とする周波数検出回路。 In a circuit that detects the amplitude and frequency of an input signal from the outputs of multiple bandpass filters, interpolation is performed between the center frequencies of the two bandpass filters based on the relative values of the output levels of two adjacent filters based on the characteristics of the filters. A frequency detection circuit characterized in that the frequency of an input signal is determined by using the input signal, and the amplitude is also corrected based on the characteristics of a filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13618085U JPS6244269U (en) | 1985-09-04 | 1985-09-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13618085U JPS6244269U (en) | 1985-09-04 | 1985-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6244269U true JPS6244269U (en) | 1987-03-17 |
Family
ID=31039057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13618085U Pending JPS6244269U (en) | 1985-09-04 | 1985-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6244269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862263A (en) * | 1994-06-13 | 1996-03-08 | Tech Res & Dev Inst Of Japan Def Agency | Signal processing method |
-
1985
- 1985-09-04 JP JP13618085U patent/JPS6244269U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862263A (en) * | 1994-06-13 | 1996-03-08 | Tech Res & Dev Inst Of Japan Def Agency | Signal processing method |