| 单词 | VQC (Vector Quantizing Code) |
| 释义 | 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. |
| 随便看 |
|
科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。