Speech Recognition & Sound Compression

Speech Recognition & Sound Compression The question of sound compression is often asked by CTOs, hence this dedicated thread. SpeechMagic provides high sound compression (Philips CELP – 19.2 kBit/s) to easily transfer sound data over band-limited channels with guaranteed high recognition rates. The following sound file formats can be processed by the SpeechMagic engine:

  • Philips CELP 16 kHz / 16 bit – 19 kbit/s (SpeechMagic native format) (8,24 MB/h)
  • Philips CELP 8 kHz / 16 bit – 19 kbit/s (SpeechMagic native format)
  • PCM 16 kHz / 16 bit – 256 kbit/s (PC)
  • PCM 11 kHz / 16 bit – 176 kbit/s (mobile input devices)
  • PCM 8 kHz / 8 bit and 16 bit – 64/128 kbit/s (telephone)
  • CCITT A-law, µ-law 8 kHz / 8 bit – 64 kbit/s (telephone)
  • DSS Standard Play
  • ADPCM
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