JPS58159628U - Filter circuit of digital audio playback device - Google Patents

Filter circuit of digital audio playback device

Info

Publication number
JPS58159628U
JPS58159628U JP5650782U JP5650782U JPS58159628U JP S58159628 U JPS58159628 U JP S58159628U JP 5650782 U JP5650782 U JP 5650782U JP 5650782 U JP5650782 U JP 5650782U JP S58159628 U JPS58159628 U JP S58159628U
Authority
JP
Japan
Prior art keywords
audio playback
playback device
digital audio
filter circuit
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.)
Granted
Application number
JP5650782U
Other languages
Japanese (ja)
Other versions
JPH0319093Y2 (en
Inventor
河野　俊彦
Original Assignee
ヤマハ株式会社
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 by ヤマハ株式会社 filed Critical ヤマハ株式会社
Priority to JP5650782U priority Critical patent/JPS58159628U/en
Publication of JPS58159628U publication Critical patent/JPS58159628U/en
Application granted granted Critical
Publication of JPH0319093Y2 publication Critical patent/JPH0319093Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Filters And Equalizers (AREA)
  • Networks Using Active Elements (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来におけるディジタルオーディオ再生装置の
ブロック図、第２図はアパーチャ回路３の動作を説明す
るための波形図、第３図は第１図のローパスフィルタ４
の構成例を示す回路図、第４図は第３図の回路の遮断特
性を示す図、第５図はこの考案の一実施例を示すブロッ
ク図、第６図は第５図のサンプリング周波数除去フィル
タ５をアクティブフィルタで構成する場合の一例を示す
回路図である。 １・・・・・・信号処理回路、２・・・・・・Ｄ／Ａ変
換器、３・・・・・・アパーチャ回路、４．　４’・・
・・・・ローパスフィルタ、７・・・・・・サンプリン
グ周波数除去フィルタ。FIG. 1 is a block diagram of a conventional digital audio playback device, FIG. 2 is a waveform diagram for explaining the operation of the aperture circuit 3, and FIG. 3 is a low-pass filter 4 of FIG.
4 is a diagram showing the cutoff characteristics of the circuit shown in FIG. 3, FIG. 5 is a block diagram showing an embodiment of this invention, and FIG. 6 is a diagram showing the sampling frequency removal of the circuit shown in FIG. 5. 5 is a circuit diagram showing an example of a case where filter 5 is configured with an active filter. FIG. 1... Signal processing circuit, 2... D/A converter, 3... Aperture circuit, 4. 4'...
...Low pass filter, 7...Sampling frequency removal filter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] Ｄ／Ａ変換されたオーディオ再生信号からサンプリング
周波数を除去する帯域除去フィルタと、前記帯域除去フ
ィルタの出力信号に含まれる他のノイズ成分を除去する
ローパスフィルタとを具えたディジタルオーディオ再生
装置のフィルタ回路。A filter circuit for a digital audio playback device, comprising a band-removal filter that removes a sampling frequency from a D/A-converted audio playback signal, and a low-pass filter that removes other noise components contained in the output signal of the band-removal filter. .
JP5650782U 1982-04-19 1982-04-19 Filter circuit of digital audio playback device Granted JPS58159628U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5650782U JPS58159628U (en) 1982-04-19 1982-04-19 Filter circuit of digital audio playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5650782U JPS58159628U (en) 1982-04-19 1982-04-19 Filter circuit of digital audio playback device

Publications (2)

Publication Number Publication Date
JPS58159628U true JPS58159628U (en) 1983-10-24
JPH0319093Y2 JPH0319093Y2 (en) 1991-04-23

Family

ID=30067033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5650782U Granted JPS58159628U (en) 1982-04-19 1982-04-19 Filter circuit of digital audio playback device

Country Status (1)

Country Link
JP (1) JPS58159628U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6721427B1 (en) 1999-06-08 2004-04-13 Zanden Audio System Co., Ltd. Analog filter for digital audio system and audio amplifier for using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6721427B1 (en) 1999-06-08 2004-04-13 Zanden Audio System Co., Ltd. Analog filter for digital audio system and audio amplifier for using the same

Also Published As

Publication number Publication date
JPH0319093Y2 (en) 1991-04-23

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