Frequency Shift Method for MP3 Audio Data by Modifying Inputs of IMDCT

Jung SP, Lee DH, Kim TH, Park JS. Frequency Shift Method for MP3 Audio Data by Modifying Inputs of IMDCT. J Audio Eng Soc. 2016;64(1/2):13-22. doi:10.17743/jaes.2015.0088

@article{Jung2016_18101,
  author = {Jung, Seung Pyo and Lee, Dong Hoon and Kim, Tae Hoon and Park, Ju Sung},
  title = {{Frequency Shift Method for MP3 Audio Data by Modifying Inputs of IMDCT}},
  journal = {Journal of the Audio Engineering Society},
  volume = {64},
  number = {1/2},
  pages = {13--22},
  year = {2016},
  month = jan,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2015.0088},
  url = {https://doi.org/10.17743/jaes.2015.0088}
}

TY  - JOUR
TI  - Frequency Shift Method for MP3 Audio Data by Modifying Inputs of IMDCT
AU  - Jung, Seung Pyo
AU  - Lee, Dong Hoon
AU  - Kim, Tae Hoon
AU  - Park, Ju Sung
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 64
IS  - 1/2
SP  - 13
EP  - 22
PY  - 2016
DA  - 2016/01/06
DO  - 10.17743/jaes.2015.0088
UR  - https://doi.org/10.17743/jaes.2015.0088
PB  - Audio Engineering Society
LA  - en
AB  - Adjusting the playing speed and signal pitch of an audio signal in a compressed representation, such as MP3, presents special challenges. The proposed approach modifies the input of the inverse modified discrete cosine transform in the process of MP3 decoding. The method provides a high-quality frequency shift from the mathematical model, which can extract the frequency, amplitude, and phase of the frequency components located at subband boundaries. Using the extracted information, frequency shifts were made and the performance of the proposed method was analyzed and compared with other methods by quantitative and subject tests. For a subjective analysis, the MOS test with five professional musicians was carried out. The subjects generally gave the result a score of 4. The proposed method has a computation complexity of approximately 43% of the synchronized overlap-add algorithm for MP3 music, which is known as a simple frequency-shift algorithm.
ER  -