The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1998
Filed:
Apr. 16, 1997
Chau-kai Hsieh, Hsinchu, TW;
Industrial Technology Research Institute, Taipei, TW;
Abstract
The present invention comprises an interpolation circuit for performing a linear interpolation operation for a voice synthesizer receiving a plurality of frames of voice data wherein each frame is subdivided into a plurality of sub frames with each sub frame being assigned with a predefined interpolation weighting factor. The interpolation circuit comprises an input port for receiving a plurality of sub frame voice data to be interpolated wherein said sub frame data are received in a predefined order. The interpolation circuit further includes a read-only-memory (ROM) for storing a plurality of multiplications of each of the plurality of sub frame voice data to each of the weighting factors and a read-only-memory (ROM) address generator capable of determining a address in ROM utilizing the sub frame voice data received from the input port and the predefined order of the frame and the sub frame thereof when the voice data is being received. The interpolation circuit further includes an output means for reading a multiplication from the ROM at the address and sequentially adding each of the multiplications to compute an interpolation value.