Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Patent
1990-06-20
1992-03-17
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
395 2, G10L 500
Patent
active
050975110
ABSTRACT:
A sound synthesizing method and apparatus for producing synthesized sounds having a property similar to the property of natural sounds emitted from a natural acoustic tube having a variable cross-sectional area. The natural acoustic tube is replaced by a series connection of a plurality of acoustic tubes each having a variable cross-sectional area. The acoustic tube series connection is replaced by an equivalent electric circuit connected between a power source circuit and a sound radiation circuit. The equivalent electric circuit includes a parallel connection of first and second electric circuits equivalent for adjacent first and second acoustic tubes of the acoustic tube series connection. The first electric circuit includes input and output side sections each including a propagated current source and a surge impedance element having a surge impedance inversely proportional to the cross-sectional area of the first acoustic tube. The second electric circuit includes input and output side sections each including a propagated current source and a surge impedance element having a surge impedance inversely proportional to the cross-sectional area of the second acoustic tube. A value for the current flowing in the radiation circuit is calculated to produce a synthesized sound component corresponding to the calculated value. Thereafter, similar calculations are repeated at uniform time intervals to produce a synthesized sound.
REFERENCES:
1CASSP 86 proceedings, vol. 3 of 4, 7th-11th, Apr. 1986, Tokyo, pp. 2011-2014, 1EEE, New York, W. Frank et al.: "Improved Vocal Tract Models for Speech Synthesis".
Flanagan, "Speech Analysis, Synthesis", Springer-Verlag, New York, 1965, pp. 45-68.
Suda Norio
Suzuki Takahiro
Kabushiki Kaisha Meidensha
Kemeny Emanuel S.
LandOfFree
Sound synthesizing method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sound synthesizing method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sound synthesizing method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1481897