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pulse code 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 ).
  • The fixed infrastructure method is proving popular on high-density passenger lines where pulse code cab signaling has already been installed.
  • Starting in the late 1920s, the PRR installed Pulse code cab signaling along certain tracks used by high-speed passenger trains.
  • 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 ).
  • Pulse code cab signals work by sending metered pulses along an existing AC track circuit operating at some chosen carrier frequency.
  • PATCO trains are governed by a Pulse code cab signaling system which transmits signal codes to the trains via the running rails.
  • In this system permutation matrices were used to scramble coded representations ( such as Pulse Code Modulation and variants ) of the speech data.
  • 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.
  • 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.
  • By operating with a different carrier frequency of 250 Hz, additional pulse codes could be sent to the train without interfering with legacy 100 Hz codes.
  • 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 ).
  • There are two theories on how the signal that is being propagated is coded in the spikes as to whether it is pulse code or rate code.
  • The pulse code modulated ( PCM ) data link transmitted digital data, which would be vital to providing automated spacecraft checkout and launch procedures on future flights.
  • 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.
  • The two modulation techniques used were pulse code modulation / frequency modulation ( PCM / FM ) and frequency modulation / frequency modulation ( FM / FM ).
  • Speed restrictions required by the signal system are provided by the legacy Pulse code cab signaling system, which has been in service on various railroads since the 1930s.
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