JPS6225298B2 - - Google Patents

Info

Publication number
JPS6225298B2
JPS6225298B2 JP56069817A JP6981781A JPS6225298B2 JP S6225298 B2 JPS6225298 B2 JP S6225298B2 JP 56069817 A JP56069817 A JP 56069817A JP 6981781 A JP6981781 A JP 6981781A JP S6225298 B2 JPS6225298 B2 JP S6225298B2
Authority
JP
Japan
Prior art keywords
signal
noise
circuit
value
calculation
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
JP56069817A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57184334A (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 JP56069817A priority Critical patent/JPS57184334A/ja
Priority to US06/373,437 priority patent/US4587620A/en
Publication of JPS57184334A publication Critical patent/JPS57184334A/ja
Publication of JPS6225298B2 publication Critical patent/JPS6225298B2/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)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (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)
JP56069817A 1981-05-09 1981-05-09 Noise eliminating device Granted JPS57184334A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56069817A JPS57184334A (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
JP56069817A JPS57184334A (en) 1981-05-09 1981-05-09 Noise eliminating device

Publications (2)

Publication Number Publication Date
JPS57184334A JPS57184334A (en) 1982-11-13
JPS6225298B2 true JPS6225298B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-06-02

Family

ID=13413685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069817A Granted JPS57184334A (en) 1981-05-09 1981-05-09 Noise eliminating device

Country Status (1)

Country Link
JP (1) JPS57184334A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0776873B2 (ja) * 1986-04-15 1995-08-16 ヤマハ株式会社 楽音信号発生装置
JPS6316721A (ja) * 1986-07-09 1988-01-23 Fujitsu Ltd 雑音除去装置
JP2003295899A (ja) 2002-03-28 2003-10-15 Fujitsu Ltd 音声入力装置

Also Published As

Publication number Publication date
JPS57184334A (en) 1982-11-13

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