JPS5459128A - Input and output waveform comparator of speakers - Google Patents

Input and output waveform comparator of speakers

Info

Publication number
JPS5459128A
JPS5459128A JP12695977A JP12695977A JPS5459128A JP S5459128 A JPS5459128 A JP S5459128A JP 12695977 A JP12695977 A JP 12695977A JP 12695977 A JP12695977 A JP 12695977A JP S5459128 A JPS5459128 A JP S5459128A
Authority
JP
Japan
Prior art keywords
signal
speaker
amplifier
differential
input
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
JP12695977A
Other languages
Japanese (ja)
Inventor
Masahiro Higuchi
Shintaro Hirose
Yasuhiro Ishii
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP12695977A priority Critical patent/JPS5459128A/en
Publication of JPS5459128A publication Critical patent/JPS5459128A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To synchronize input and output signal waveforms with time by delaying the input signal to a speaker, drawing out the differential signal of both waveforms directly by applying the signals to a differential operator and quantitatively knowing the fidelity waveforms for the transient signal to the speaker with the differential signal thereof. CONSTITUTION:The signal of, e.g., single sine wave pulses, from a signal generator 1 is amplified in an amplifier 2 and is applied to the speaker 3 to be measured. The sound waves from the speaker 3 are received in a microphone 4 and are amplified in an amplifier 5. At the same time, the output of the amplifier 2 is delayed as much as for the propagation time of the sound between the speaker and microphone in a delay circuit 6. The difference between the signal which has been delayed in this delay circuit 6 and has been synchronized with time and the microphone output of the amplifier 5 is operated in a differential operator 7. The magnitude of the differential signal is displayed in a display device 8.
JP12695977A 1977-10-19 1977-10-19 Input and output waveform comparator of speakers Pending JPS5459128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12695977A JPS5459128A (en) 1977-10-19 1977-10-19 Input and output waveform comparator of speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12695977A JPS5459128A (en) 1977-10-19 1977-10-19 Input and output waveform comparator of speakers

Publications (1)

Publication Number Publication Date
JPS5459128A true JPS5459128A (en) 1979-05-12

Family

ID=14948123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12695977A Pending JPS5459128A (en) 1977-10-19 1977-10-19 Input and output waveform comparator of speakers

Country Status (1)

Country Link
JP (1) JPS5459128A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306410A (en) * 2006-05-12 2007-11-22 Fujitsu Ltd Method, program and system for inspecting sound reproduction device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104605A (en) * 1973-02-05 1974-10-03
JPS5227245B2 (en) * 1972-07-08 1977-07-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5227245B2 (en) * 1972-07-08 1977-07-19
JPS49104605A (en) * 1973-02-05 1974-10-03

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306410A (en) * 2006-05-12 2007-11-22 Fujitsu Ltd Method, program and system for inspecting sound reproduction device

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