KR940004437A - Sound card noise prevention device - Google Patents
Sound card noise prevention device Download PDFInfo
- Publication number
- KR940004437A KR940004437A KR1019920013910A KR920013910A KR940004437A KR 940004437 A KR940004437 A KR 940004437A KR 1019920013910 A KR1019920013910 A KR 1019920013910A KR 920013910 A KR920013910 A KR 920013910A KR 940004437 A KR940004437 A KR 940004437A
- Authority
- KR
- South Korea
- Prior art keywords
- noise
- signal
- buffer
- supplying
- voice
- Prior art date
Links
- 230000002265 prevention Effects 0.000 title abstract 2
- 230000010355 oscillation Effects 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Quality & Reliability (AREA)
- Computational Linguistics (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
Abstract
본 발명은 범용 컴퓨터등의 본체와 연결되어 본체에서 전송되는 음성데이타 및 제어데이타에 따라 음성을 출력하는 음성카드에서 음성 및 제어신호에 노이즈성분이 혼입되는 것을 방지하기 위한 노이즈방지장치에 관한 것으로, 슈미트트리거회로 또는 TTL회로로 구성된 복수개의 버피를 구비하여, 카드의 각 부를 리세트시키는 리세트신호와, 각 부에 클록신호를 제공하는 국부발진신호와, 동기 및 명령의 순서를 제어하기 위한 카운터의 출력신호에 포함된 노이즈성분을 각각제거하고, 외부에서 인가되는 전원전압에 포함된 리플성분을 제거함으로써, 음성카드의 각 부의 동작에 에러가 발생하는것을 방지함과 아울러 출력되는 음성의 질을 보다 향상시킬 수 있다.The present invention relates to a noise prevention device for preventing noise components from being mixed in a voice and a control signal in a voice card which is connected to a main body such as a general-purpose computer and outputs a voice according to the voice data and control data transmitted from the main body. A counter for controlling a sequence of reset signals for resetting each part of the card, a local oscillation signal for providing a clock signal to each part, and a plurality of buffy comprising a schmitt trigger circuit or a TTL circuit. By removing the noise components included in the output signal of each and removing the ripple components included in the power supply voltage applied from the outside, it is possible to prevent errors in the operation of each part of the sound card and to improve the quality of the output audio. It can improve more.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 의한 음성카드의 노이즈방지장치의 일 실시예를 나타내는 블록도.1 is a block diagram showing an embodiment of an apparatus for preventing noise of a sound card according to the present invention;
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 인터페이스용 프로세서 12 : 복조부11 processor for interface 12 demodulator
13 : 필터 14 : 증폭부13 filter 14 amplification unit
15 : 스피커 16 : 국부발진부15 speaker 16 local oscillation unit
17 : 카운터17: counter
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920013910A KR950003878B1 (en) | 1992-08-03 | 1992-08-03 | A device checking noise in voice card |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920013910A KR950003878B1 (en) | 1992-08-03 | 1992-08-03 | A device checking noise in voice card |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940004437A true KR940004437A (en) | 1994-03-15 |
KR950003878B1 KR950003878B1 (en) | 1995-04-20 |
Family
ID=19337424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920013910A KR950003878B1 (en) | 1992-08-03 | 1992-08-03 | A device checking noise in voice card |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950003878B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6340866B1 (en) | 1998-02-05 | 2002-01-22 | Lg Electronics Inc. | Plasma display panel and driving method thereof |
-
1992
- 1992-08-03 KR KR1019920013910A patent/KR950003878B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6340866B1 (en) | 1998-02-05 | 2002-01-22 | Lg Electronics Inc. | Plasma display panel and driving method thereof |
Also Published As
Publication number | Publication date |
---|---|
KR950003878B1 (en) | 1995-04-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |