VQC (Vector Quantizing Code)

A voice compression technique that encodes analog voice signals

based on a series of samples represented as a bit string, which is termed a vector.The vector is compared to a set of standard vectors stored in a codebook, the standard vector closest to the actual is selected, and an abbreviated identifier (i.e., code) is transmitted to the target station.VQC supports high-quality voice at rates of 32 kbps and 16 kbps, compression ratios of 2:1 and 4:1 as compared to pulse code modulation (PCM).VQC also does a good job of supporting modem transmission at speeds up to 9600 bps.VQC is an early form of code-excited linear prediction (CELP), which is now a dominant compression mechanism in packet voice applications such as voice over Internet protocol (VoIP). See also analog, CELP, compression, encode, HCV, modem, PCM, quantize, vector, and VoIP.

• plug
• Plug and Play (PnP)
• plug ’n’ play (plug and play)
• PM
• PMD (Polarization Mode Dispersion)
• PMI (Property Management Interface)
• PNG (Portable Network Graphics)
• PNNI
• PnP (Plug and Play)
• PnP (Plug and Play)
• PN (Pseudorandom Noise or PseudoNoise)
• PoC (Push-to-talk over Cellular)
• PoC (Push-to-talk over Cellular)
• POCSAG (Post Office Code Standardization Advisory Group)
• PoE (Power over Ethernet)
• POF (Plastic Optical Fiber)
• POH (Path OverHead)
• pointer
• point of presence (POP)
• point of termination (POT)
• point-to-multipoint circuit
• point-to-point circuit
• Point-to-Point Protocol (PPP)
• Point-to-Point Tunneling Protocol (PPTP)
• Poisson distribution