G - Physics – 10 – L
Patent
G - Physics
10
L
354/47
G10L 15/12 (2006.01) G10L 15/00 (2006.01)
Patent
CA 1176755
PHD 80-130 22 22.8.1981 ABSTRACT: "Measuring mis-match between signals". The degree of mis-match which would be obtained between a test and a reference signal, for example speech signals, should their time axes be subjected to that relative shift and/or distortion which is required to minimize the degree of mismatch is carried out by sampling the two signals at regular intervals and storing these samples in memories (12 and 14 respectively). By means of address counters (2, 4) all the samples of one signal are then read out in succession from one memory (12) each time each successive sample of the other signal is read out from the other memory (14), and the difference between each pair of samples is formed in a subtracter (16). Each difference value from the subtractor is added to the smallest of three quantities X, Y and Z determined in a device 26 and the result stored in a register (20) to form the new quantity X. This new quantity X is also stored in a further memory (22) cyclically addressed in tandem with the memory 12. The quantity Z is -the previous content of the location of memory 22 into which the new quantity X is written, and the quantity Y is the previous value of the quantity Z, obtained by shifting the pre- vious value of the quantity Z in a two-stage shift re- gister (24), Thus the quantities X, Y and Z correspond to the present sample of the other signal and the immediately preceding sample of the one signal, the immediately pre- ceding sample of both signals, and the present sample of the one signal and the immediately preceding sample of the other signal respectively. The result is that each successive value of the quantity X is the optimum (i.e. minimum) cumulative distance value between the two sig- nals for the corresponding pair of samples should these be assigned to each other when matching the two signals to PHD 80-130 23 22.8.1981 each other. The process is continued until all the sampled values have been read from the memories 12 and 14 and paired, at which point the value of the quantity X is a measure of the above-defined degree of mis-match. (Fig. 3).
385936
Geppert Rudolf
Ney Hermann
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
LandOfFree
Measuring mis-match between signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Measuring mis-match between signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring mis-match between signals will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1293155