Claims
- 1. For use with a synthesizer of original information bearing time domain signals from compressed information time domain signals produced by predetermined different signal compression techniques, a memory device comprising:
- means for storing said compressed time domain signals and instruction signals in the form of X period zeroed representations of said original time domain signals, wherein X is a fraction in the range from about one-fourth to about three-fourths, specifying the particular X period zeroing compression technique applied to said original information bearing time domain signals to produce corresponding portions of said compressed information time domain signals, said compressed information time domain signals comprising a plurality of samples resulting from said predetermined X period zeroing signal compression technique; and
- means for enabling said compressed information time domain signals and said instruction signals to be read out from said memory device to enable said compressed information time domain signals to be expanded using the X period zeroing technique specified by the corresponding instruction signals.
- 2. The combination of claim 1 wherein X is one-half.
- 3. For use with a synthesizer of original information bearing time domain signals from compressed information time domain signals produced by predetermined different signal compression techniques, a memory device comprising:
- means for storing said compressed information time domain signals and instruction signals in the form of floating-zero, two-bit delta modulated representations of said original time domain signals specifying the particular delta modulation compression technique applied to said original information bearing time domain signals to produce corresponding portions of said compressed information time domain signals, said compressed information time domain signals comprising a plurality of samples resulting from said predetermined floating-zero, two-bit delta modulation signal compression technique; and
- means for enabling said compressed information time domain signals and said instruction signals to be read out from said memory device to enable said compressed information time domain signals to be expanded using the floating-zero, 2-bit delta modulation expansion technique specified by the corresponding instruction signals.
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a divisional of co-pending application Ser. No. 761,210, filed Jan. 21, 1977 entitled "METHOD AND APPARATUS FOR SPEECH SYNTHESIZING," now U.S. Pat. No. 4,214,125 issued July 22, 1980 which is a continuation of application Ser. No. 632,140, filed Nov. 14, 1975 entitled "METHOD AND APPARATUS FOR SPEECH SYNTHESIZING," now abandoned, which is a continuation-in-part of application Ser. No. 525,388, filed Nov. 20, 1974, entitled "METHOD AND APPARATUS FOR SPEECH SYNTHESIZING," now abandoned, which, in turn, is a continutation-in-part of application Ser. No. 432,859, filed Jan. 14, 1974, entitled "METHOD FOR SYNTHESIZING SPEECH AND OTHER COMPLEX WAVEFORMS," which was abandoned in favor of application Ser. No. 525,388.
US Referenced Citations (6)
Divisions (1)
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Date |
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761210 |
Jan 1977 |
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Continuations (1)
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632140 |
Jan 1975 |
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Continuation in Parts (2)
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525388 |
Nov 1974 |
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Parent |
432859 |
Jan 1974 |
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