JPS57142020A - Sampling frequency converter - Google Patents

Sampling frequency converter

Info

Publication number
JPS57142020A
JPS57142020A JP2784381A JP2784381A JPS57142020A JP S57142020 A JPS57142020 A JP S57142020A JP 2784381 A JP2784381 A JP 2784381A JP 2784381 A JP2784381 A JP 2784381A JP S57142020 A JPS57142020 A JP S57142020A
Authority
JP
Japan
Prior art keywords
impulse response
sampling frequency
digital
order
filter
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
Application number
JP2784381A
Other languages
Japanese (ja)
Inventor
Masao Kasuga
Mitsuru Kikuchi
Yoshiyuki Tsuchikane
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP2784381A priority Critical patent/JPS57142020A/en
Publication of JPS57142020A publication Critical patent/JPS57142020A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0283—Filters characterised by the filter structure
    • H03H17/0286—Combinations of filter structures
    • H03H17/0288—Recursive, non-recursive, ladder, lattice structures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0685—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being rational

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To lower the order of filter and to realize the sufficient filtering characteristics, by combining an infinite impulse response digital filter and a definite impulse response digital filter. CONSTITUTION:A signal in sampling frequency f1 inputted to a terminal 1 is interpolated at an interpolating device 2 and sampled at interleaving devices 7 and 9. As a result, a signal in sampling frequency f2 is obtained at an output. High frequency components are rejected by providing an infinite impulse response (FIR) digital filte and a definite impulse response (IIR) digital filter between the devices 2 and 7 and the two interleaving devices. To achieve the attenuation of 100dB in 22kHz, it is enough to provide the four order or IIR digital filters and several order of FIR digital filters.
JP2784381A 1981-02-27 1981-02-27 Sampling frequency converter Pending JPS57142020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2784381A JPS57142020A (en) 1981-02-27 1981-02-27 Sampling frequency converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2784381A JPS57142020A (en) 1981-02-27 1981-02-27 Sampling frequency converter

Publications (1)

Publication Number Publication Date
JPS57142020A true JPS57142020A (en) 1982-09-02

Family

ID=12232193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2784381A Pending JPS57142020A (en) 1981-02-27 1981-02-27 Sampling frequency converter

Country Status (1)

Country Link
JP (1) JPS57142020A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010925A (en) * 1983-06-30 1985-01-21 Sony Corp Digital signal processor
JPS6276313A (en) * 1985-09-27 1987-04-08 Matsushita Electric Ind Co Ltd Digital filter frequency characteristic conversion device
JPH0250507A (en) * 1988-08-10 1990-02-20 Kyocera Corp Sampling frequency converter
JPH07297680A (en) * 1994-04-26 1995-11-10 Crystal Semiconductor Corp Digital filter, and filtering method of digital signal
EP1142111A1 (en) * 1998-12-14 2001-10-10 QUALCOMM Incorporated Low-power programmable digital filter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010925A (en) * 1983-06-30 1985-01-21 Sony Corp Digital signal processor
JPS6276313A (en) * 1985-09-27 1987-04-08 Matsushita Electric Ind Co Ltd Digital filter frequency characteristic conversion device
JPH0250507A (en) * 1988-08-10 1990-02-20 Kyocera Corp Sampling frequency converter
JPH07297680A (en) * 1994-04-26 1995-11-10 Crystal Semiconductor Corp Digital filter, and filtering method of digital signal
EP1142111A1 (en) * 1998-12-14 2001-10-10 QUALCOMM Incorporated Low-power programmable digital filter
JP2002533004A (en) * 1998-12-14 2002-10-02 クゥアルコム・インコーポレイテッド Low power programmable digital filter
JP2010252353A (en) * 1998-12-14 2010-11-04 Qualcomm Inc Low-power programmable digital filter
EP2262111A1 (en) * 1998-12-14 2010-12-15 Qualcomm Incorporated Low-power programmable digital filter

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