JPS5514746A - Amplitude adjuster for audio signal - Google Patents

Amplitude adjuster for audio signal

Info

Publication number
JPS5514746A
JPS5514746A JP8743978A JP8743978A JPS5514746A JP S5514746 A JPS5514746 A JP S5514746A JP 8743978 A JP8743978 A JP 8743978A JP 8743978 A JP8743978 A JP 8743978A JP S5514746 A JPS5514746 A JP S5514746A
Authority
JP
Japan
Prior art keywords
output
signal
bpf6
amplitude
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.)
Pending
Application number
JP8743978A
Other languages
Japanese (ja)
Inventor
Toshiyuki Goto
Koichi Kido
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8743978A priority Critical patent/JPS5514746A/en
Publication of JPS5514746A publication Critical patent/JPS5514746A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase the dynamic range as well as to prevent the lowering of the signal quality by carrying out instantaneously both compression and expansion of the amplitude for the audio signals in accordance with the signal level.
CONSTITUTION: The audio signals sent from input terminal of amplitude compressor A are applied to output terminal 2 via amplitude compression circuit 3, and at the same time part of the audio signals is applied to FM modulation circuit 5 to have the FM modulation. The FM-modulated signal is applied to BPF6. And in case the modulated signal features a larger band width of BPF6, the output with AM modulation applied by slope of the filter characteristics is generated at the output of BPF6. This output is detected through detection circuit 7, and the signal of the positive pole area of the output signal is applied as the control voltage of circuit 3. Thus the compression is performed in accordance with the signal level. On the other hand, amplitude expander B has the same operation as compressor 1 via FM modulation circuit 5', BPF6' and detection circuit 7' in order to expand the signal level for expander B.
COPYRIGHT: (C)1980,JPO&Japio
JP8743978A 1978-07-17 1978-07-17 Amplitude adjuster for audio signal Pending JPS5514746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8743978A JPS5514746A (en) 1978-07-17 1978-07-17 Amplitude adjuster for audio signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8743978A JPS5514746A (en) 1978-07-17 1978-07-17 Amplitude adjuster for audio signal

Publications (1)

Publication Number Publication Date
JPS5514746A true JPS5514746A (en) 1980-02-01

Family

ID=13914881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8743978A Pending JPS5514746A (en) 1978-07-17 1978-07-17 Amplitude adjuster for audio signal

Country Status (1)

Country Link
JP (1) JPS5514746A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330149A (en) * 1986-07-22 1988-02-08 Kubota Ltd Control method for pipe thickness in continuous casting for pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6330149A (en) * 1986-07-22 1988-02-08 Kubota Ltd Control method for pipe thickness in continuous casting for pipe
JPH0558824B2 (en) * 1986-07-22 1993-08-27 Kubota Kk

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