JPH0374367U - - Google Patents
Info
- Publication number
- JPH0374367U JPH0374367U JP13554189U JP13554189U JPH0374367U JP H0374367 U JPH0374367 U JP H0374367U JP 13554189 U JP13554189 U JP 13554189U JP 13554189 U JP13554189 U JP 13554189U JP H0374367 U JPH0374367 U JP H0374367U
- Authority
- JP
- Japan
- Prior art keywords
- output
- selection means
- input data
- circuit
- pass 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
- 239000002131 composite material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 2
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Description
第１図は本考案に係るデジタル信号処理計測器
の一実施例を示す構成ブロツク図、第２図は第１
図の複合フイルタ６の詳細を示す構成ブロツク図
、第３図は複合フイルタ６の間引き動作を示すパ
ワースペクトラム図、第４図は複合フイルタ６の
補間動作を示すスペクトラム図、第５図はデジタ
ル信号処理計測器の従来例を示す構成ブロツク図
、第６図は第５図の間引きフイルタ２の構成を示
すブロツク図、第７図は第５図の補間フイルタ４
の構成を示すブロツク図である。
１……ＡＤ変換器、３……プロセサ、５……表
示回路、６……複合フイルタ、６１……補間回路
、６２……第１の選択手段、６３……ローパスフ
イルタ、６４……間引回路、６５……第２の選択
手段。
FIG. 1 is a configuration block diagram showing an embodiment of the digital signal processing measuring instrument according to the present invention, and FIG.
3 is a power spectrum diagram showing the thinning operation of the composite filter 6, FIG. 4 is a spectrum diagram showing the interpolation operation of the composite filter 6, and FIG. 5 is a digital signal 6 is a block diagram showing the structure of the thinning filter 2 shown in FIG. 5, and FIG. 7 is a block diagram showing the structure of the interpolation filter 4 shown in FIG. 5.
FIG. DESCRIPTION OF SYMBOLS 1... AD converter, 3... Processor, 5... Display circuit, 6... Complex filter, 61... Interpolation circuit, 62... First selection means, 63... Low pass filter, 64... Thinning out Circuit, 65...Second selection means.
Claims (1)
数軸上で表示するデジタル信号処理計測器におい
て、 入力データ間に時間軸上でデータを補間する補
間回路と、この補間回路の出力と前記入力データ
のいずれか一方を選択して出力する第１の選択手
段と、この第１の選択手段の出力を入力するロー
パスフイルタと、このローパスフイルタの出力値
を時間軸上で間引く間引回路と、この間引回路の
出力と前記ローパスフイルタの出力のいずれか一
方を選択して出力する第２の選択手段とからなる
複合フイルタを備え、時間軸表示するときは第１
の選択手段が補間回路の出力を選択するとともに
第２の選択手段がローパスフイルタの出力を選択
し、周波数軸表示するときは第１の選択手段が入
力データを選択するとともに第２の選択手段が間
引回路の出力を選択するように構成したことを特
徴とするデジタル信号処理計測器。[Scope of Claim for Utility Model Registration] In a digital signal processing measuring instrument that processes input data and displays it on the time axis or frequency axis, an interpolation circuit that interpolates data on the time axis between input data, and this interpolation a first selection means for selecting and outputting either the output of the circuit or the input data; a low-pass filter for inputting the output of the first selection means; and a low-pass filter for inputting the output of the first selection means; It is equipped with a composite filter consisting of a thinning circuit for thinning out data, and a second selection means for selecting and outputting either the output of the thinning circuit or the output of the low-pass filter.
The selection means selects the output of the interpolation circuit, and the second selection means selects the output of the low-pass filter, and when displaying the frequency axis, the first selection means selects the input data, and the second selection means selects the input data. A digital signal processing measuring instrument characterized by being configured to select the output of a thinning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13554189U JPH0374367U (en) | 1989-11-22 | 1989-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13554189U JPH0374367U (en) | 1989-11-22 | 1989-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0374367U true JPH0374367U (en) | 1991-07-25 |
Family
ID=31682805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13554189U Pending JPH0374367U (en) | 1989-11-22 | 1989-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0374367U (en) |
-
1989
- 1989-11-22 JP JP13554189U patent/JPH0374367U/ja active Pending
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