Orthogonal transformer and apparatus operational thereby

Details Orthogonal transformer and apparatus operational thereby Orthogonal transformer and apparatus operational thereby

1988-04-06

1989-06-13

Malzahn, David H.

Boots, shoes, and leggings

G06F 15332

Patent

active

048398446

ABSTRACT:
Apparatus for obtaining an orthogonal transformer for use in signal analysis. This apparatus is especially useful in cepstral analysis where vocal tract characteristics of a signal are separated from a sound source. A buffer memory 10 temporarily stores input time series data and an orthogonal transformation is carried out by an orthogonal transform means 20 by multiplying each predetermined data read sequentially out of the buffer memory 10 by a predetermined twiddle factor. A controller 30 is used to specify the data read out of the buffer memory 10 and for giving the twiddle factor a value of 1 and r/2.sup.l corresponding to the magnitude of the real and imaginary part of the twiddle factor. Cepstrum information is obtainable using simple hardware to analyze the data generated by the orthogonal transformer.

REFERENCES:
patent: 3881097 (1975-04-01), Lehmann
patent: 4038539 (1977-07-01), Van Cleave
patent: 4052565 (1977-10-01), Baxter et al.
patent: 4446530 (1984-05-01), Tsvboka
patent: 4495620 (1985-01-01), Steele et al.
patent: 4510578 (1985-04-01), Miyaguchi et al.
patent: 4554629 (1985-11-01), Smith, Jr.
Shum, "Speech Processing With Walsh-Hadamard Trans Forms" IEEE Trans. on Audio & Electroacoustics vol. Au-21, No. 3, Jun. 1973, pp. 174-179.

Affiliated with

Also associated with

Rating

Orthogonal transformer and apparatus operational thereby does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Orthogonal transformer and apparatus operational thereby, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orthogonal transformer and apparatus operational thereby will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1282503