JPS57185572A - Calculating circuit for autocorrelation function - Google Patents

Calculating circuit for autocorrelation function

Info

Publication number
JPS57185572A
JPS57185572A JP56069818A JP6981881A JPS57185572A JP S57185572 A JPS57185572 A JP S57185572A JP 56069818 A JP56069818 A JP 56069818A JP 6981881 A JP6981881 A JP 6981881A JP S57185572 A JPS57185572 A JP S57185572A
Authority
JP
Japan
Prior art keywords
multipliers
autocorrelation function
product
output
calculating circuit
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
JP56069818A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6114551B2 (enrdf_load_stackoverflow
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 JP56069818A priority Critical patent/JPS57185572A/ja
Priority to US06/373,437 priority patent/US4587620A/en
Publication of JPS57185572A publication Critical patent/JPS57185572A/ja
Publication of JPS6114551B2 publication Critical patent/JPS6114551B2/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)
  • Complex Calculations (AREA)
  • Image Processing (AREA)
JP56069818A 1981-05-09 1981-05-09 Calculating circuit for autocorrelation function Granted JPS57185572A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56069818A JPS57185572A (en) 1981-05-09 1981-05-09 Calculating circuit for autocorrelation function
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
JP56069818A JPS57185572A (en) 1981-05-09 1981-05-09 Calculating circuit for autocorrelation function

Publications (2)

Publication Number Publication Date
JPS57185572A true JPS57185572A (en) 1982-11-15
JPS6114551B2 JPS6114551B2 (enrdf_load_stackoverflow) 1986-04-19

Family

ID=13413715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069818A Granted JPS57185572A (en) 1981-05-09 1981-05-09 Calculating circuit for autocorrelation function

Country Status (1)

Country Link
JP (1) JPS57185572A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6114551B2 (enrdf_load_stackoverflow) 1986-04-19

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