Title:
MODULATION SIGNAL GENERATION DEVICE
Document Type and Number:
Japanese Patent JP3039232
Kind Code:
B2
Abstract:
PURPOSE: To provide a modulation signal generation device capable of continuously controlling from the state where a modulation frequency is fixed up to the state where a random property by a noise is added around the frequency.
CONSTITUTION: A band of a white noise generator 21 is limited by a band-pass filter 22 to be outputted through a multiplier 24 as a modulation signal. The band-pass filter 22 whose coefficient is set by a coefficient table 23, and is constituted so that the Q is varied continuously from an oscillation state of infinity to the state where the Q is lowered. In such a case, when the Q is made the infinity, the frequency of the modulation signal becomes a fixed value, and according to lower the Q, the modulation signal added with the white noise is obtained.
Inventors:
Masahiro Kakishita
Toshifumi Kunimoto
Toshifumi Kunimoto
Application Number:
JP28726293A
Publication Date:
May 08, 2000
Filing Date:
October 25, 1993
Export Citation:
Assignee:
Yamaha Corporation
International Classes:
G10H7/08; G10H1/043; G10H7/00; (IPC1-7): G10H1/043; G10H7/00; G10H7/08
Domestic Patent References:
| JP1289994A |
Attorney, Agent or Firm:
Atsuo Waki (1 person outside)
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