SPTK Version 4.1

Merry Christmas to you 🎉

New Features

• Calculating autocorrelation from spectrum (acorr -q)
• Conversion impulse response to cepstrum (mpir2c)
• Drawing spectrogram (gspecgram)
• Dynamic range compression (drc)
• Magic number interpolation (magic_intpl)
• Median filter (medfilt)

Minor fixes

• Option in drawing commands
• Thread safety of pitch
• Small bugs

Acknowledgments

• Keiichi Tokuda @k1tokuda
• Keiichiro Oura @uratec
• Takenori Yoshimura @takenori-y
• Takato Fujimoto @taka19