Jukka Saarinen

Publications (6)4.63 Total impact

• Conference Proceeding: Multi-mode matrix quantizer for low bit rate LSF quantization.

  Ulpu Sinervo, Jani Nurminen, Ari Heikkinen, Jukka Saarinen
  8th European Conference on Speech Communication and Technology, EUROSPEECH 2003 - INTERSPEECH 2003, Geneva, Switzerland, September 1-4, 2003; 01/2003
• Source

  Available from: tut.fi

  Conference Proceeding: Perceptual irrelevancy removal in narrowband speech coding.

  Marja Lahdekorpi, Jani Nurminen, Ari Heikkinen, Jukka Saarinen
  8th European Conference on Speech Communication and Technology, EUROSPEECH 2003 - INTERSPEECH 2003, Geneva, Switzerland, September 1-4, 2003; 01/2003
• Conference Proceeding: A novel quantization scheme for the noise-like component in waveform interpolation speech coding

  Jani Nurminen, Ari Heikkinen, Jukka Saarinen
  [show abstract] [hide abstract]
  ABSTRACT: This paper presents a novel and efficient coding scheme for the noise-like component in waveform interpolation speech coding. The techniques employed in the task are described in detail and the advantages gained by using them are discussed. These techniques are shown to enable perceptually transparent coding of the magnitude spectra of the noise-like component with only ten bits per frame and to offer speech quality improvements at higher bit rates. The most significant features of the proposed scheme are smoothed representation and matrix quantization of the magnitude spectra. The proposed coding techniques can be used for enhancement of speech coders based on the waveform interpolation approach.
  Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on; 06/2002 · 4.63 Impact Factor
• Article: On methods for perfect reconstruction WI speech coding with preprocessing.

  Mikko Tammi, Ari Heikkinen, Jukka Saarinen
  Speech Communication. 01/2002; 38:305-320.
• Source

  Available from: enst.fr

  Conference Proceeding: Objective evaluation of methods for quantization of variable-dimension spectral vectors in WI speech coding.

  Jani Nurminen, Ari Heikkinen, Jukka Saarinen
  EUROSPEECH 2001 Scandinavia, 7th European Conference on Speech Communication and Technology, 2nd INTERSPEECH Event, Aalborg, Denmark, September 3-7, 2001; 01/2001
• Source

  Available from: uis.no

  Article: Quantization of magnitude spectra in waveform interpolation speech coding

  Jani Nurminen, Ari Heikkinen, Jukka Saarinen
  [show abstract] [hide abstract]
  ABSTRACT: Efficient quantization of magnitude spectra is one of the central issues in speech coding, especially with tech-niques operating at low bit rates. This paper presents a novel high-accuracy quantization scheme for the magni-tude spectra in waveform interpolation speech coding. The performance of the proposed techniques, including both their accuracy and complexity, is studied using ob-jective measures. In addition, the techniques are com-pared to conventional approaches. On the basis of these comparisons, it can be concluded that the techniques pre-sented in this paper are capable of achieving high quanti-zation accuracy. Thus, the proposed techniques can be employed in waveform interpolation speech coders to enhance the quality of the reconstructed speech.