[go: up one dir, main page]

JPS6441511A - Digital audio tone controller - Google Patents

Digital audio tone controller

Info

Publication number
JPS6441511A
JPS6441511A JP62197958A JP19795887A JPS6441511A JP S6441511 A JPS6441511 A JP S6441511A JP 62197958 A JP62197958 A JP 62197958A JP 19795887 A JP19795887 A JP 19795887A JP S6441511 A JPS6441511 A JP S6441511A
Authority
JP
Japan
Prior art keywords
characteristic
bus
control means
overflow
dsp11
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
JP62197958A
Other languages
Japanese (ja)
Other versions
JP2566418B2 (en
Inventor
Yoshiaki Tanaka
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
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP62197958A priority Critical patent/JP2566418B2/en
Publication of JPS6441511A publication Critical patent/JPS6441511A/en
Application granted granted Critical
Publication of JP2566418B2 publication Critical patent/JP2566418B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To always prevent overflow by providing a bus control means, a trebble control means, a rewrite control means for two filter coefficients and a means performing revision for a prescribed period and switching the characteristic into the lower characteristic by one step at that point of time when a digital signal processor is approaching overflow. CONSTITUTION:If digital signal processors DSP11, DSP12 are going to tend to overflow in the arithmetic operation, when an output signal from a terminal (x) of the DSP11 is given to the 1st interrupt input terminal INT1 of a central processing unit CPU via an OR circuit ORb, the lower bus characteristic by one step is selected and the result is written in a coefficient set section. Then a switching pulse is generated to set an internal counter 1 and the system is restored. When the internal counter 1 reaches timeup after a prescribed time, the bus characteristic coefficient over by one step to increase the bus control variable is selected. Thus, a digital audio signal not being an object of tone control has no S/N deterioration at no emphasis state.
JP62197958A 1987-08-07 1987-08-07 Digital audio tone control device Expired - Lifetime JP2566418B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62197958A JP2566418B2 (en) 1987-08-07 1987-08-07 Digital audio tone control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197958A JP2566418B2 (en) 1987-08-07 1987-08-07 Digital audio tone control device

Publications (2)

Publication Number Publication Date
JPS6441511A true JPS6441511A (en) 1989-02-13
JP2566418B2 JP2566418B2 (en) 1996-12-25

Family

ID=16383145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197958A Expired - Lifetime JP2566418B2 (en) 1987-08-07 1987-08-07 Digital audio tone control device

Country Status (1)

Country Link
JP (1) JP2566418B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016070256A (en) * 2014-10-01 2016-05-09 株式会社小野測器 Injection amount measuring apparatus and method
JP2018510550A (en) * 2015-02-12 2018-04-12 電信科学技術研究院 Method and apparatus for determining presets for a timbre equalizer (AEQ)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163908A (en) * 1979-06-08 1980-12-20 Takayoshi Hirata Digital tone control circuit
JPS5880910A (en) * 1981-11-06 1983-05-16 Sony Corp Tone control circuit
JPS6259408A (en) * 1985-09-09 1987-03-16 Victor Co Of Japan Ltd Digital graphic equalizer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55163908A (en) * 1979-06-08 1980-12-20 Takayoshi Hirata Digital tone control circuit
JPS5880910A (en) * 1981-11-06 1983-05-16 Sony Corp Tone control circuit
JPS6259408A (en) * 1985-09-09 1987-03-16 Victor Co Of Japan Ltd Digital graphic equalizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016070256A (en) * 2014-10-01 2016-05-09 株式会社小野測器 Injection amount measuring apparatus and method
JP2018510550A (en) * 2015-02-12 2018-04-12 電信科学技術研究院 Method and apparatus for determining presets for a timbre equalizer (AEQ)

Also Published As

Publication number Publication date
JP2566418B2 (en) 1996-12-25

Similar Documents

Publication Publication Date Title
JPS6441511A (en) Digital audio tone controller
JPS6444509A (en) High speed input/output module and plc device
JPS5578323A (en) Data transfer system
JPS5526750A (en) Digital filter
JPS5556260A (en) Information processor
JPS5730077A (en) Accumulated instruction processing system
JPS57130149A (en) System for interruption processing of microprogram control device
JPS5516249A (en) Time modifying system of electronic clock
JPS5735408A (en) Digital filter device
JPS5793439A (en) Audio output controlling system
JPS57204950A (en) Interruption controlling system
JPS5559580A (en) Arithmetic control unit
JPS647866A (en) Special acoustic effect switching device
JPS5384541A (en) Data processor
JPS57182248A (en) Arithmetic processor
JPS56159723A (en) Clock switching control system
JPS56164442A (en) Response system between microprogram processing devices
JPS5674727A (en) Bus connection system
JPS56127275A (en) Time interrupting device
JPS56107616A (en) Control system for time delay rate of signal
JPS5692620A (en) Selection system of input/output device
JPS56128090A (en) Data input method
JPS57169856A (en) Instruction execution system
JPS5735407A (en) Digital filter device
JPS6482247A (en) State setting circuit

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term