Abstract: An arrangement is provided for compressing speech data. Speech data is compressed based on a phoneme stream, detected from the speech data, and a delta stream, determined based on the difference between the speech data and a speech signal stream, generated using the phoneme stream with respect to a voice font. The compressed speech data is decompressed into a decompressed phoneme stream and a decompressed delta stream from which the speech data is recovered.

Abstract: An arrangement is provided for compressing speech data. Speech data is compressed based on a phoneme stream, detected from the speech data, and a delta stream, determined based on the difference between the speech data and a speech signal stream, generated using the phoneme stream with respect to a voice font. The compressed speech data is decompressed into a decompressed phoneme stream and a decompressed delta stream from which the speech data is recovered.

Abstract: The projected edge vectors from a viewpoint to a video image of the reference object on a projection plane are determined. The reference object has three orthogonal edges, and the projected edge vectors correspond to edge vectors of the reference object. The orthonormal basis vectors for subspaces are generated using the projected edge vectors and a vector from the viewpoint to an intersection of the projected edge vectors. The directions of the edge vectors corresponding to the projected edge vectors are calculated. The distance between the reference object and the viewpoint is calculated. Using this distance, the coordinates of the reference object are determined.