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栅格编码调制（ＴＣＭ）作为一种有效的数字调制技术，已经得到了广泛的应用。其在信源编码中的对偶———栅格编码量化（ＴＣＱ），也正在研究之中。ＴＣＱ方法利用有限字母表的率失真理论，采用信号的集合扩展、分划及支路标注等概念，结合信号本身的特点，得到了一种均方误差性能很好且计算量不复杂的压缩编码器。本文将ＴＣＱ量化编码方法用于语音编码，设计了ＴＣＱ编码模拟系统，模拟结果表明重建语音具有较高的主、客观质量。
Grid coded modulation (TCM) has been widely used as an effective digital modulation technique. Its duality in source coding - raster code quantization (TCQ) is also under study. TCQ method uses the rate-distortion theory of finite alphabet, adopts the concepts of signal set expansion, division and branch labeling, and combines the characteristics of the signal itself to obtain a compact coding with good mean square error performance and uncomplicated computation Device. In this paper, the TCQ quantization coding method is used for speech coding, and a TCQ coding simulation system is designed. The simulation results show that the reconstruction speech has higher main and objective quality.