/ zx

;, ,... (ms o) / ,,,'

"," ZX

/;, • : (]RSR) C/ ...* sx ß ZX

', ..... • (]RS T)

HOOK

* = ELIGIBLE TERMINAL NODE

* ........ "-ORS K). I , DH " ....... (]RS L)- I

I o (IRS Id)- - k,,,,LEF T

HOOK IR$ X -- INTERCONNECTION RULE SET X

• RESULTS IN A "BLINK" zx I

complete description in a link inventory. In a continuous speech applica- tion, the word beginning and ending links are elaborated into a more de- tailed graph of boundary links. In the figure, word-end links are identified as HOOKs and the boundary link as a BLINK.--DLR

4,903,306

43.72.Pf VOICE RECOGNITION USING AN EIGENVECTOR

Shogo Nakamura, assignor to Ricoh Company 20 February 1990 (Class 381/42); filed in Japan 3 October 1986

This system would identify a speaker by searching for a similar pattern of inner product frequency distributions in a candidate library. For each enrolled speaker, a matrix is formed of several frames of parameter values (filter bank amplitudes, etc. ). A principal components analysis is used to find a nonzero eigenvector of the matrix. Inner products are then computed between the eigenvector and individual frames of the parameter matrix. A frequency distribution (histogram) of the inner product values is stored in a library of speaker candidates.--DLR

5,078,037

43.75.Gh STRINGED INSTRUMENT WITH SLOTTED

BODY

Charles D. Sutcliffe and David P. Schafer, assignors to Dana Sound Research, Incorporated

7 January 1992 (Class 84/291); filed 14 June 1990

This solid-body electric guitar has an unusual curved slot 42 in the body 22 at the base of neck 24. The purpose is to provide the guitarist with

easier access to the frets 26 near the base of the neck, and to the strings themselves, near the upper end of the musical scale where the tuned string segments are short.•DWM

5,078,041

43.75.Gh SUSPENSION BRIDGE PICKUP FOR

GUITAR

Laurence C. Schmued, Charlottesville, VA 7 January 1992 {Class 84/731); filed 4 June 1990

This unusual guitar bridge 25 for amplified guitars is called a "suspen- sion" bridge but really looks like a bridge with supporting "piers" 31 that transmit string vibration at the bridge to piezoelectric transducer assemb- lies 30. By v. arying the design of resonator plates in the transducers to maxi-

mize reproduction within given frequency ranges, by using some trans- ducers such as 30d that are distant from the strings, and by selecting outputs from different combinations of transducers using switches 36, a wide variety of tonal effects may be obtained.•DWM

5,088,376

43.75. Hi BASS DRUM ACOUSTIC MUFFLING APPARATUS

Scott F. Crago, Los Angeles, and Jeff E. Obermeyer, Venice, CA 18 February 1992 {Class 84/411 M); filed 23 November 1990

"Muffling" of the sound of a bass drum, e.g., acoustical damping of the bass drum heads without changing the drum resonance frequency, is ac-

complished in this patent by inserting between heads 12 and 13 a pillow 20 that is slightly longer than the distance between the drum heads, the pillow having a larger cross section at the ends than in the middle.•DWM

630 J. Acoust. Soc. Am., Vol. 92, No. 1, July 1992 Patent News 630

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