JPS63108237U - - Google Patents

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Publication number
JPS63108237U
JPS63108237U JP19983186U JP19983186U JPS63108237U JP S63108237 U JPS63108237 U JP S63108237U JP 19983186 U JP19983186 U JP 19983186U JP 19983186 U JP19983186 U JP 19983186U JP S63108237 U JPS63108237 U JP S63108237U
Authority
JP
Japan
Prior art keywords
section
clock
linear interpolation
signal
output signal
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
Application number
JP19983186U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP19983186U priority Critical patent/JPS63108237U/ja
Publication of JPS63108237U publication Critical patent/JPS63108237U/ja
Pending legal-status Critical Current

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  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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図は同実施例における回路各部の信
号値を示す図、第３図は同実施例において用いる
デルタシグマ変調回路の構成を示すブロツク図、
第４図は同実施例における回路各部の周波数成分
を示す図、第５図は原信号およびＰＣＭ信号の周
波数成分を示す図である。 １……オーバーサンプリングフイルタ部、２…
…直線補間部、３……デルタシグマ変調部。 FIG. 1 is a block diagram showing the configuration of an embodiment of this invention, FIG. 2 is a diagram showing signal values of each part of the circuit in the same embodiment, and FIG. 3 is a diagram showing the configuration of a delta-sigma modulation circuit used in the same embodiment. Block diagram shown,
FIG. 4 is a diagram showing the frequency components of each part of the circuit in the same embodiment, and FIG. 5 is a diagram showing the frequency components of the original signal and the PCM signal. 1... Oversampling filter section, 2...
...Linear interpolation section, 3...Delta-sigma modulation section.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 入力リニアＰＣＭ信号をその信号速度のｎ倍の
クロツクでサンプリングし、順次シフトするとと
もに係数乗算して加算し、これにより所定のフイ
ルタ特性を付加するｎ倍オーバーサンプリングフ
イルタ部と、このオーバーサンプリングフイルタ
部の出力信号を所定周波数のクロツクにより直線
補間する直線補間部と、この直線補間部の出力信
号を前記クロツクに基づいてデルタシグマ変調す
る変調部とを具備することを特徴とするデジタル
・デルタシグマ変調回路。 An n-times oversampling filter section that samples an input linear PCM signal with a clock that is n times its signal speed, sequentially shifts it, multiplies it by a coefficient, and adds it, thereby adding a predetermined filter characteristic; and this oversampling filter section. Digital delta-sigma modulation characterized by comprising: a linear interpolation section that linearly interpolates the output signal of the linear interpolation section using a clock having a predetermined frequency; and a modulation section that performs delta-sigma modulation on the output signal of the linear interpolation section based on the clock. circuit.
JP19983186U 1986-12-27 1986-12-27 Pending JPS63108237U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19983186U JPS63108237U (en) 1986-12-27 1986-12-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19983186U JPS63108237U (en) 1986-12-27 1986-12-27

Publications (1)

Publication Number Publication Date
JPS63108237U true JPS63108237U (en) 1988-07-12

Family

ID=31161820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19983186U Pending JPS63108237U (en) 1986-12-27 1986-12-27

Country Status (1)

Country Link
JP (1) JPS63108237U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045268A1 (en) * 1999-12-17 2001-06-21 Sakai, Yasue Oversampling circuit and digital/analog converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556958A (en) * 1978-06-30 1980-01-18 Victor Co Of Japan Ltd Sampling frequency converter
JPS61239713A (en) * 1985-04-17 1986-10-25 Nec Corp Conversion system for asynchronous sampling frequency

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556958A (en) * 1978-06-30 1980-01-18 Victor Co Of Japan Ltd Sampling frequency converter
JPS61239713A (en) * 1985-04-17 1986-10-25 Nec Corp Conversion system for asynchronous sampling frequency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045268A1 (en) * 1999-12-17 2001-06-21 Sakai, Yasue Oversampling circuit and digital/analog converter

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