Patent
Linear predictive coding technique with symmetrical calculation of Y-and B-values
Karl Renner,Alec J. Morton +1 more
- 31 Aug 1984
6
TL;DR: In this article, a digital lattice filter includes a Yadder (44) and a B-adder (106), where the Yadder calculates the Y-values for a linear predictive coding voice compression technique and the Badder calculates B-values.
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Abstract: A digital lattice filter includes a Y-adder (44) and a B-adder (106). The Y-adder (44) calculates the Y-values for a linear predictive coding voice compression technique and the B-adder (106) calculates the B-values. Each of the calculated B-values output by the B-adder (106) is input to a B-stack (118) for storage therein. The B-stack (118) delays the B-values for one sample period. Multiplier constants are contained in a K-stack (90) for output to both adders (44) and (106) for use in the multiplication operation. The final value is stored in a Y1-register (104). Each of the adders (44) and (106) are multiplexed to perform a multiplication operation followed by an addition operation to generate the respective Y- and B-values. A generated Y-value is stored in a Y-register (56) for use in the next sequential Y calculation. In addition, the generated Y-value is used as a multiplicand for generation of a B-value. Therefore, it is only necessary to store the Y-values for one clock cycle and the B-values for up to nine clock cycles, thus reducing the amount of storage space necessary. In addition, the use of two multiplexed adders reduces the required processing speed at each of the adders.
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Citations
Patent
Apparatus, system and method for speech compression and decompression
Shelia Guberman
- 10 Mar 1999
TL;DR: In this article, a method for compressing a speech signal by decimating or removing somewhat redundant portions of the signal while retaining reference signal portions sufficient to reconstruct the signal without noticeable loss in quality, thereby permitting a storage and transmission of high quality speech with minimal storage volume or transmission bandwidth requirements.
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- 12 Dec 1994
TL;DR: In this article, the authors proposed to use multiple stages to increase the overall compression between the incoming analog voice signal and the resulting digitized voice signal over that which would be obtained if only a single stage of compression were to be used.
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Arabic language translating device with pronunciation capability using language pronunciation rules
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Patent
Method and apparatus for implementing multiple filters with shared components
Charles D. Thompson,Joseph P. Gergen +1 more
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TL;DR: In this article, a structure for implementing a plurality of independent filters, such as finite impulse response filters, in an efficient manner is presented, where coefficient and data operands associated with each of the independent filters are stored in a predetermined order in a storage device and selectively coupled to an arithmetic unit.
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Patent
Linear predictive coding technique with one multiplication step per stage
Karl Renner,Alec J. Morton +1 more
- 13 Aug 1987
TL;DR: In this paper, a digital filter for synthesized speech includes a full adder (72) that is multiplexed to perform multiplication and addition/subtraction operations, which reduces the number of multiplication steps required in processing each stage.
5
References
Patent
Two-pass multiplier/accumulator circuit
George P. Chamberlin
- 01 Jul 1983
TL;DR: In this paper, a two-pass multiplier/accumulator circuit is presented, which performs various arithmetic operations on operands contained within an X Register 10 and a Y Register 20 and places the result in an Accumulator Register 40.
68
Digital filter for an electronic musical instrument
Masatada Wachi,Mitsumi Katoh +1 more
TL;DR: In this article, the amplitude-frequency characteristic of the digital filter is a composite of the respective characteristics of the pole filter and the zero filter, and the filter characteristic as a whole can be diversely altered by changing the connection.
44
System using digital filter for waveform or speech synthesis
TL;DR: In this article, a system using a digital filter for generating complex waveforms, such as human speech, is described. But it does not specify the output of the delay and the latch memory.
27
Lattice filter for waveform or speech synthesis circuits using digital logic
TL;DR: In this paper, a digital filter of the type which may be used in circuits for generating complex waveforms, such as human speech, was proposed. But the filter was not implemented on a single integrated circuit chip.
25
Patent
A time multiplexed n-ordered digital filter
Tim A. Williams
- 18 Oct 1982
TL;DR: In this article, a digital filter of order n (64) has the shape of a partial autocorrelation lattice structure (PARCOR) having two multipliers (88 and 102) and two adders (90 and 110).
18
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