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In this paper, a new algorithm which adopts the techniques of double prediction and the Pareto probability model was applied to encode the DC term in the JPEG compression process. Conventionally, the DC term was encoded by differential coding, i.e., the difference of the DC values between the current block and the previous block. In this paper, we first use the DC terms of four adjacent blocks to...
In recent years, the SSIM was proposed for image and vocal signal assessments to match human perception. The existing SSIMs for vocal signals are similar to those for images. However, the human perceptions for voices and images are different. If two vocal signals differ only by phase, delay, or logistic frequency shift, they are heard similarly. In this paper, we propose the non-uniform sampling frequency...
In music and speech recognition, onset detection plays an important role for extracting the note of a music signal or the syllable of a speech signal. There are several existing onset detection algorithms, such as the difference of magnitude method, the short-term energy method, the surf method, and the high frequency content method. In this paper, we proposed an improved onset detection algorithm,...
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