Title:
【発明の名称】雑音発生器
Document Type and Number:
Japanese Patent JP2894433
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To control a sound volume with respect to random noise without giving effect onto a path for a main signal or using an analog device for the control of a digitized signal. SOLUTION: Amplitude information equivalent to a sound volume of pseudo noise is stored in advance in a memory 2 and a D0 bit of data of an address designated by an external selection signal and an output of a binary counter 1 is outputted to the binary counter 1 and D1-D7 bits are outputted to parallel/ serial converter 3. The binary counter 1 is reset to an initial value when the data D0 bit of the memory 2 reaches a prescribed value, the binary counter 1 is set to an initial value. The parallel/serial converter 3 converts a random number in 1 bit from the random number generator 4 and the data from the memory 2 into serial data. A D/A converter 5 converts serial data having a random number in 1-bit from the random number generator 4 as a code component into an analog noise output.
Inventors:
SHINOZAKI KOJI
Application Number:
JP5525496A
Publication Date:
May 24, 1999
Filing Date:
March 13, 1996
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G06F7/58; H03B29/00; H03K3/84; H03M1/08; (IPC1-7): H03B29/00; G06F7/58; H03K3/84
Domestic Patent References:
| JP5114999A | ||||
| JP546752A | ||||
| JP221813U |
Attorney, Agent or Firm:
Yanagi Kawa Shin