JPS6399436U - - Google Patents
Info
- Publication number
- JPS6399436U JPS6399436U JP19554686U JP19554686U JPS6399436U JP S6399436 U JPS6399436 U JP S6399436U JP 19554686 U JP19554686 U JP 19554686U JP 19554686 U JP19554686 U JP 19554686U JP S6399436 U JPS6399436 U JP S6399436U
- Authority
- JP
- Japan
- Prior art keywords
- window function
- window
- signal
- function generator
- delta
- 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 7
- 238000001228 spectrum Methods 0.000 description 2
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Description
第１図はこの考案の一実施例の構成を示すブロ
ツク図、第２図は同実施例において用いるブラツ
クマンハリス窓を示す波形図、第３図は同実施例
のデシメイシヨン回路で用いられるブラツクマン
ハリス窓のスペクトラムを示す特性図、第４図は
デルタシグマ変調回路の構成を示すブロツク図、
第５図は従来のデシメイシヨン回路の構成を示す
ブロツク図、第６図は従来のデシメイシヨン回路
の各部の波形を示す波形図、第７図は従来のデシ
メイシヨン回路で用いられる三角波形窓のスペク
トラムを示す特性図である。
１０……ブラツクマンハリス窓発生部（窓関数
発生部）。
FIG. 1 is a block diagram showing the configuration of an embodiment of this invention, FIG. 2 is a waveform diagram showing a Brachman-Harris window used in the same embodiment, and FIG. A characteristic diagram showing the spectrum of the Harris window. Figure 4 is a block diagram showing the configuration of the delta-sigma modulation circuit.
Fig. 5 is a block diagram showing the configuration of a conventional decimation circuit, Fig. 6 is a waveform diagram showing waveforms of each part of the conventional decimation circuit, and Fig. 7 shows the spectrum of a triangular waveform window used in the conventional decimation circuit. It is a characteristic diagram. 10...Brackman-Harris window generation section (window function generation section).
Claims (1)
変調された信号とを乗じて累算することにより、
前記信号をリニアＰＣＭ信号に変換するデシメイ
シヨン回路において、前記窓関数発生部として副
極の減衰量が三角窓より大きい窓関数を発生する
ものを用いたことを特徴とするデシメイシヨン回
路。 By multiplying and accumulating the window function generated by the window function generator and the delta-sigma modulated signal,
A decimation circuit for converting the signal into a linear PCM signal, characterized in that the window function generator is one that generates a window function with a sub-pole having a larger attenuation than a triangular window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986195546U JPH0453068Y2 (en) | 1986-12-19 | 1986-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986195546U JPH0453068Y2 (en) | 1986-12-19 | 1986-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6399436U true JPS6399436U (en) | 1988-06-28 |
| JPH0453068Y2 JPH0453068Y2 (en) | 1992-12-14 |
Family
ID=31153534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986195546U Expired JPH0453068Y2 (en) | 1986-12-19 | 1986-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453068Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193115A (en) * | 1981-05-07 | 1982-11-27 | Enertec | Desimation filter |
-
1986
- 1986-12-19 JP JP1986195546U patent/JPH0453068Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193115A (en) * | 1981-05-07 | 1982-11-27 | Enertec | Desimation filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0453068Y2 (en) | 1992-12-14 |
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