JPS6093165U - Digital audio playback device - Google Patents
Digital audio playback deviceInfo
- Publication number
- JPS6093165U JPS6093165U JP18474983U JP18474983U JPS6093165U JP S6093165 U JPS6093165 U JP S6093165U JP 18474983 U JP18474983 U JP 18474983U JP 18474983 U JP18474983 U JP 18474983U JP S6093165 U JPS6093165 U JP S6093165U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- digital
- emphasis
- output
- outputs
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のディジタルオーディオ再生装置の一例を
示すブロック図、第２図は本考案による □ディジ
タルオーディオ再生装置の一実施例を示すブロック図、
第３図は第２図に示すディジタルフィルタの具体例を示
す回路図である。
４・・・・・・信号処理回路、５・・・・・・ディジタ
ル・アナログ変換器、６・・・・・・アパチャ、７・・
・・・田−パスフィルタ、９・・・・・・ディジタルフ
ィルタ。FIG. 1 is a block diagram showing an example of a conventional digital audio playback device, and FIG. 2 is a block diagram showing an example of a digital audio playback device according to the present invention.
FIG. 3 is a circuit diagram showing a specific example of the digital filter shown in FIG. 2. 4...Signal processing circuit, 5...Digital/analog converter, 6...Aperture, 7...
... field-pass filter, 9... digital filter.
Claims (1)
再生信号を入力することによりディジタル・オーディオ
信号に復号するとともに入力情報からエンファシスの付
与を識別してエンファシス判別信号を出力する信号処理
回路と、この信号処理回路から出力されるディジタル・
オーディオ信号に含まれる不所望の高域成分を除去する
とともにエンファシス判別信号に応じてディエンファシ
ス特性が切替えられるディジタルフィルタと、このディ
ジタルフィルタの出力をアナログ値に変換するディジタ
ル・アナログ変換器と、このディジタル・アナログ変換
器から出力される信号の安定部分をサンプリングして均
一時間幅のパルス振幅変調信号を出力するアパチャと、
このアパチャの出力信号から不所望の高域成分を除去し
てアナログ値のオーディオ信号のみを出力するローパス
フィルタとを設けたことを特徴とするディジタルオ−デ
ィオ再生装置。A signal processing circuit that inputs a playback signal of an audio signal digitally recorded on a recording medium, decodes it into a digital audio signal, identifies the addition of emphasis from input information, and outputs an emphasis determination signal, and this signal processing circuit. Digital output from the circuit
A digital filter that removes undesired high-frequency components contained in an audio signal and whose de-emphasis characteristics are switched according to an emphasis discrimination signal; a digital-to-analog converter that converts the output of this digital filter into an analog value; an aperture that samples a stable portion of the signal output from the digital-to-analog converter and outputs a pulse amplitude modulation signal with a uniform time width;
A digital audio reproducing device characterized in that it is provided with a low-pass filter that removes undesired high-frequency components from the output signal of the aperture and outputs only an analog value audio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18474983U JPS6093165U (en) | 1983-11-30 | 1983-11-30 | Digital audio playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18474983U JPS6093165U (en) | 1983-11-30 | 1983-11-30 | Digital audio playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6093165U true JPS6093165U (en) | 1985-06-25 |
Family
ID=30399499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18474983U Pending JPS6093165U (en) | 1983-11-30 | 1983-11-30 | Digital audio playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6093165U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394912A (en) * | 1977-01-21 | 1978-08-19 | Nippon Columbia | Pcm recorder |
| JPS5567219A (en) * | 1978-11-15 | 1980-05-21 | Toshiba Corp | Equalizer unit |
| JPS5724005A (en) * | 1980-07-17 | 1982-02-08 | Sony Corp | Digital signal processor |
-
1983
- 1983-11-30 JP JP18474983U patent/JPS6093165U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5394912A (en) * | 1977-01-21 | 1978-08-19 | Nippon Columbia | Pcm recorder |
| JPS5567219A (en) * | 1978-11-15 | 1980-05-21 | Toshiba Corp | Equalizer unit |
| JPS5724005A (en) * | 1980-07-17 | 1982-02-08 | Sony Corp | Digital signal processor |
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