Patents by Inventor Yu-Jie Sha

Yu-Jie Sha has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Audio processing method and apparatus by utilizing a partition domain spreading function table stored in three linear arrays for reducing storage
    Patent number: 9076438
    Abstract: An audio processing method is disclosed. In the audio processing method, a modified discrete cosine transform (MDCT) algorithm is utilized to transform a present time domain audio signal into a spectrum audio signal. A spreading function (SF) coefficient of each partition domain of the spectrum audio signal is obtained by referencing an SF table, wherein the table is stored in three linear arrays based on non-zero SF-Coefficient values. A masking partitioned energy threshold of each partition domain of the spectrum audio signal is calculated utilizing a logarithmic scale. An audio block type of each partition domain and an SMR of the spectrum audio signal are calculated. Subsequently, the spectrum audio signal is compressed into an audio bit stream according to the audio block type of each partition domain and the SMR. In addition, an audio signal processing apparatus is also disclosed in this invention.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: July 7, 2015
    Assignee: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tsung-Han Tsai, Yu-Jie Sha
  • Audio Processing Method and Apparatus
    Publication number: 20130054252
    Abstract: An audio processing method is disclosed. In the audio processing method, a modified discrete cosine transform (MDCT) algorithm is utilized to transform a present time domain audio signal into a spectrum audio signal. A spreading function (SF) coefficient of each partition domain of the spectrum audio signal is obtained by referencing an SF table. A masking partitioned energy threshold of each partition domain of the spectrum audio signal is calculated utilizing a logarithmic scale. An audio block type of each partition domain and an SMR of the spectrum audio signal are calculated. Subsequently, the spectrum audio signal is compressed into an audio bit stream according to the audio block type of each partition domain and the SMR. In addition, an audio signal processing apparatus is also disclosed in this invention.
    Type: Application
    Filed: December 19, 2011
    Publication date: February 28, 2013
    Applicant: NATIONAL CENTRAL UNIVERSITY
    Inventors: Tsung-Han Tsai, Yu-Jie Sha