JPS6441363A - Digital signal generator - Google Patents

Digital signal generator

Info

Publication number
JPS6441363A
JPS6441363A JP19732787A JP19732787A JPS6441363A JP S6441363 A JPS6441363 A JP S6441363A JP 19732787 A JP19732787 A JP 19732787A JP 19732787 A JP19732787 A JP 19732787A JP S6441363 A JPS6441363 A JP S6441363A
Authority
JP
Japan
Prior art keywords
frequency
digital signal
sampling
prescribed
post
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
JP19732787A
Other languages
Japanese (ja)
Other versions
JPH0783416B2 (en
Inventor
Masayuki Kawashima
Tomoyuki Ujiie
Yoshihiro Kawada
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP19732787A priority Critical patent/JPH0783416B2/en
Publication of JPS6441363A publication Critical patent/JPS6441363A/en
Publication of JPH0783416B2 publication Critical patent/JPH0783416B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the adverse effect due to loopback noise by sampling a signal controlling a level of a digital signal in a prescribed sampling frequency and holding it for a prescribed time only. CONSTITUTION:In forming a digital signal by an up-down counter 80, the same operation as the sampling by a clock frequency fc is obtained and new frequency components fc-fa,fc+fa, 2fc-fa, 2fc+fa... are produced in addition to the fundamental wave frequency fa. In sampling a digital signal including the new frequency component at a prescribed frequency at a sample-and-hold circuit 45 of the post-stage, further new frequency components are produced based thereupon. Since the clock frequency fc in the up-down counter 80 is an integral number of multiple of the sampling frequency of the sample-and-hold circuit 45 at the post-stage, the loopback noise component is overlapped on the fundamental wave frequency and no abnormal sound is sensed. Thus, the quality of the signal tone in a prescribed band obtained by applying D/A conversion to the digital signal is improved.
JP19732787A 1987-08-07 1987-08-07 Digital signal generator Expired - Fee Related JPH0783416B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19732787A JPH0783416B2 (en) 1987-08-07 1987-08-07 Digital signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19732787A JPH0783416B2 (en) 1987-08-07 1987-08-07 Digital signal generator

Publications (2)

Publication Number Publication Date
JPS6441363A true JPS6441363A (en) 1989-02-13
JPH0783416B2 JPH0783416B2 (en) 1995-09-06

Family

ID=16372622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19732787A Expired - Fee Related JPH0783416B2 (en) 1987-08-07 1987-08-07 Digital signal generator

Country Status (1)

Country Link
JP (1) JPH0783416B2 (en)

Also Published As

Publication number Publication date
JPH0783416B2 (en) 1995-09-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees