JPS627742B2 - - Google Patents

Info

Publication number
JPS627742B2
JPS627742B2 JP56069819A JP6981981A JPS627742B2 JP S627742 B2 JPS627742 B2 JP S627742B2 JP 56069819 A JP56069819 A JP 56069819A JP 6981981 A JP6981981 A JP 6981981A JP S627742 B2 JPS627742 B2 JP S627742B2
Authority
JP
Japan
Prior art keywords
signal
circuit
noise
input
waveform
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.)
Expired
Application number
JP56069819A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57184335A (en
Inventor
Koji Niimi
Takayasu Kondo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP56069819A priority Critical patent/JPS57184335A/ja
Priority to US06/373,437 priority patent/US4587620A/en
Publication of JPS57184335A publication Critical patent/JPS57184335A/ja
Publication of JPS627742B2 publication Critical patent/JPS627742B2/ja
Granted legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/046—Systems or methods for reducing noise or bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Noise Elimination (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
JP56069819A 1981-05-09 1981-05-09 Noise eliminating device Granted JPS57184335A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56069819A JPS57184335A (en) 1981-05-09 1981-05-09 Noise eliminating device
US06/373,437 US4587620A (en) 1981-05-09 1982-04-30 Noise elimination device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56069819A JPS57184335A (en) 1981-05-09 1981-05-09 Noise eliminating device

Publications (2)

Publication Number Publication Date
JPS57184335A JPS57184335A (en) 1982-11-13
JPS627742B2 true JPS627742B2 (enrdf_load_stackoverflow) 1987-02-19

Family

ID=13413741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069819A Granted JPS57184335A (en) 1981-05-09 1981-05-09 Noise eliminating device

Country Status (1)

Country Link
JP (1) JPS57184335A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS57184335A (en) 1982-11-13

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