The source audio essence is encoded using pulse code modulation or PCM.
源音频的本质是用脉码调制或PCM编码。
The most popular method to do that now is PCM. PCM stands for pulse code modulation.
现在最常用的方法是PCM，这是英文脉冲编码调制的缩写。
A pneumatic position servo system with pulse code modulation (PCM) is described in this paper.
本文研究脉冲编码调制(PCM)控制方式的气压位置伺服系统。
Merits of the Linear FM are that it is not necessary to have an equalizer or the spread spectrum code modulation.
线性调频调制的优点是：不须在接收端添加均衡滤波器，也不须进行扩频编码。
The principle of converting analog signals to digital signals bacame popular with the introduction of pulse code modulation ;
随着脉冲编码调制技术的出现，把模拟信号转换为数字信号的原理得到广泛应用；
The audio data should be in a format understood by the headset (for example, A-law PCM [Pulse Code Modulation] format for the Sony headset).
音频数据应当是耳机可以理解的格式(例如，Sony耳机的a - law P CM [PulseCode modulation]格式)。
In pulse code modulation, the representation of the quantized samples of an analogue signal by character signals according to a defined code.
在脉码调制技术中，按照确定的代码由字符信号对模拟信号量化采样的表示法。
The effects of the channel bit error on the reconstructed images of the Differential Pulse Code Modulation (DPCM) systems are analysed in this paper.
本文分析了信道误码对DPCM图象传输系统重建图象的影响。
The basis theory of generalized pulse code modulation (GPCM) was described, and several typical application circuits with GPCM control were presented.
介绍了广义脉码调制(GPCM)控制理论，结合具体应用情况，阐述了几种GPCM控制阀典型应用的控制回路。
The generalized pulse code modulation (GPCM) control valve is a type of combination valve, and each flow control unit is connected together by mono-block.
广义脉码调制（GPCM）控制阀是一种组合型式的阀，组成的各基元通过液压集成块连接到一起。
To improve the fuze antijamming performance and the distance resolution, presents the main parameters of pseudorandom code source in pseudorandom code modulation fuze.
从提高引信抗干扰性能和距离分辨率的角度出发，确定了伪码引信中伪随机信号源的一些主要技术参量。
The UWB impulse radio technology is a new kind of communication method these years, in which the swash impulse and time-hopping code modulation techniques are mainly applied.
超宽带冲激无线电技术是近年来新兴的通信技术，其主要核心技术是采用了冲激脉冲技术和跳时码调制。
The performance representation indicating the effects of correlation of orthogonal code modulation sequences on MAI suppression in nonsynchronous CDMA system has been derived.
本文推导非同步c D M A系统多址干扰表达式，计算正交码调制码组相关性对多址干扰的影响。
In order to solve the difficulties encountered by underwater remote control, the pseudo-code modulation technology have been introduced into the field of underwater remote control.
为了解决在水下遥控中遇到的困难，把伪码调制技术引入了水下遥控领域。
The relationships between GRI pulse sequences and reference pulses, as well as between modulation code groups and Loran-C pulse groups are analyzed.
分析了GRI脉冲序列与参考脉冲，以及调制码组与罗兰C脉冲组的时间关系。
Space-time trellis code combining space diversity with code and modulation, can improve efficiency and reliability of communication system in wireless channel efficiently.
发射端分集、编码和调制结合空时格码，可以有效地提高信号在无线衰落信道中传输的有效性和可靠性；
Differential Manchester code is fit for TWACS according to the speciality of modulation signal.
由于其调制信号的特殊性，很适合差分曼彻斯特编码。
The traditional differential space-time block code (DSTBC) suffers from the signal constellation expansion for QPSK modulation.
传统的差分空时分组编码(DSTBC)在QPSK调制时存在着信号星座扩展。
To combine multilevel code (MLC) with differential space-time modulation (DSTM), a new scheme based on an multilevel low-density parity-check (LDPC) code with iterative decoding is proposed.
提出一种新的结合多级编码和差分空时调制的联合编码调制方案。
This paper discusses the theory and the realization approach of BOC modulation and demodulation in satellite navigation system, and focuses on the BOC code tracking technology.
讨论了卫星导航中BOC调制解调的原理和实现方法，并着重研究了接收机的码跟踪技术。
The closed-form expressions for CCK modulation performance were derived from correlation demodulation according to the complementary code properties and CCK modulation regulation.
从补码的特性出发，根据CCK调制规则，采用相关解调，推导在加性白色高斯噪声信道条件下CCK调制的性能表达式。
The demodulated 1-bit signal values are bitwise logically combined (e. g., XORed) with the positioning system modulation code to produce a plurality of 1-bit correlation values.
将解调的1位信号值与定位系统调制码逐位进行逻辑组合(例如异或)，以产生多个1位相关值。
The demodulated signal value word is bitwise logically combined with the positioning system modulation code word to produce a correlation value word.
将解调的信号值字与定位系统调制码字逐位进行逻辑组合以产生相关值字。
It is emphasized how to select the spread spectrum access code, and how to realize synchronization and modulation etc.
着重介绍了扩频地址码的选择及实现、同步方式和解调方法等。
The positioning system modulation code is detected responsive to the correlation metric.
响应该相关性度量，检测定位系统调制码。
The methods of code and carrier modulation are adopted to ensure reliability of the system.
由于在系统中采用编码及载波调制的方法，保证了系统的可靠性。
At last. it argues the best interference-free code and mode of modulation in interface circuit.
最后，讨论了接口电路中最佳抗干扰编码及调制方式。
Compared to current phase shift keying (PSK) modulation by a code, there is a further modulation by a sub-carrier.
与当前通过编码的相移键控(PSK)调制相对，还存在另外的通过子载波的调制。
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulation frequency.
伪码调相-载波调频复合信号的识别特征包括伪码特征和频率调制特征。
The features of pseudo code PM-carrier FM combined signal include the pseudo code and the modulation frequency.
伪码调相-载波调频复合信号的识别特征包括伪码特征和频率调制特征。
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