Speaker Verificationusing Oguma Histogram S117036 Ami Inoamta Supervisor:M.Sugiyama
Outline● Background● Speaker verification algorithm● Oguma histogram● Speech analysis condition● Learn histogram , Verification histogram● Result of speaker verification
Background● Diffusion of smartphone.● Security is more important. →Speaker verification system● VQ : most popular. But calculation amount is large.● Oguma histogram : calculation amount is small. →smartphone application.● First, test this performance in PC terminal.
Oguma histogram calculation ● Do not use VQ. ● Directly make histogram from feature vectors. 1. Set out threshold in each dimension of feature vectors. 2. Compare →Space division 3.Set out Region ID .Figure2:Concept of Oguma histogram
Speech analysis condition Database TIMIT Dialect region New England Head count 10 person Learning , verification 5 sentence , 5 sentence Recording format wav Sampling rate 16 kHzDimension number of MFCC 16 Filter bank channel 24 Window size 16 ms Frame shift 8 ms, 16 ms Dimension number of 16, 32, 64, histogram 128,256,512,1024,2048, 4096,8192