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pulse code modulation การใช้

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  • This amounts to PCM ( pulse code modulation ) with digitization performed by a sigma-delta ADC.
  • The lowpass signals are then quantized and encoded using special techniques like, Pulse Code Modulation ( PCM ).
  • It uses sub-band adaptive differential pulse code modulation ( SB-ADPCM ) within a bit rate of 64 kbit / s.
  • He also worked on pulse code modulation and wrote a book on " Modulation Theory " ( Van Nostrand, 1953 ).
  • In this system permutation matrices were used to scramble coded representations ( such as Pulse Code Modulation and variants ) of the speech data.
  • It's 159 pages of fine print, and not a dull page in the lot, if you like reading about refraction indexes and pulse code modulation.
  • It also has applications in pulse code modulation as a pulse shape for transmitting digital signals and as a matched filter for receiving the signals.
  • The station also uses a BBC-designed pulse code modulation digitisation technique similar to NICAM, which is used for outside broadcasts running through a telephone line.
  • A single-bit error in audio data stored directly as linear pulse code modulation ( such as on a CD-ROM ) causes, at worst, a single click.
  • The Gray code is sometimes attributed, incorrectly, to Elisha Gray ( in " Principles of Pulse Code Modulation ", K . W . Cattermole, for example ).
  • The two modulation techniques used were pulse code modulation / frequency modulation ( PCM / FM ) and frequency modulation / frequency modulation ( FM / FM ).
  • By the early 1970s, Thomas Stockham of Sound Stream Digital, created the first practical use of pulse code modulation, also called PCM digital recording, for high fidelity purposes.
  • The current is very fast and not suitable for fine control of the resulting store charge, so pulse code modulation is used to accurately control the overall flow.
  • Unlike the lossy mode which is based on the DCT, the lossless coding process employs a simple predictive coding model called differential pulse code modulation ( DPCM ).
  • Within a few years, multi-channel Queen Elizabeth ( 1936 39 ), the patenting of pulse code modulation ( 1938 ) all contributed to the hey-day of telephony s development.
  • Pierce wrote on electronics and information theory, and developed jointly the concept of Pulse code modulation ( PCM ) with his Bell Labs colleagues Barney Oliver and Claude Shannon.
  • This is done by sampling the incoming signal at a rate of 8 kS / s and coding each sample into an 8-bit word using pulse code modulation ( PCM ) techniques.
  • Betamax also had a significant part to play in the music recording industry, when Sony introduced its PCM ( Pulse Code Modulation ) digital recording system as an encoding box / PCM adaptor that connected to a Betamax recorder.
  • In telephone networks, digital communication is utilized for transferring many phone calls over the same copper cable or fiber cable by means of Pulse code modulation ( PCM ), i . e . sampling and digitization, in combination with Time division multiplexing ( TDM ) ( 1962 ).
  • Digital communication systems : pulse code modulation ( PCM ), differential pulse code modulation ( DPCM ), delta modulation ( DM ); digital modulation schemes-amplitude, phase and frequency shift keying schemes ( ASK, PSK, FSK ), matched filter receivers, bandwidth consideration and probability of error calculations for these schemes.
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