信号音

信号音及铃流的一种检测与识别方法

A Method of Detection Recognition of Tone Ringing

GB/T5443-1985电话自动交换网铃流和信号音技术指标测试方法

The test methods for the technical specifications of ringing and tone for automatic telephone switching network

在廉价的微机上实现程控数字交换机的模拟，该模拟交换机所有硬件动作均由软件模拟完成，它能进行呼叫处理，并有各种信号音、振铃和通话等各种功能。

Now a stored program control switch is simulated on a cheap micro-computer . All hardware movements of it are realized by software simulation , and calling processing can be carried out . It has various functions such as signal tone , ringing and talking etc.

基于盲分离技术的肺音信号中心音干扰的去除

Reduction of Heart Sounds From Lung Sounds Based on BSS

基于盲源分离理论的麦克风阵列信号有音/无音检测方法

A Voice Activity Detection Method Based on Blind Source Separation for Microphone Array Signals

采用基于多参数组合方法（短时能量、短时过零率、自相关函数值）进行语音信号清浊音判别，利用循环平均幅度差函数进行基音周期计算。

In this paper , multi-parameters ( short-time energy , short-time zero-crossing rate and autocorrelation function values ) combination has been adopted to judge the unvoiced / voiced of speech signal . Then circular average magnitude difference function has been used to calculate pitch .

CELP算法的主要特点是不区分语音信号的清浊音类型，而是统一使用基于AbS原理的时域波形匹配方法来产生线性预测激励，且该激励信号通过矢量码本来表示。

On the other side , the character of CELP algorithm is that it does not distinguish voiced or unvoiced speech , and it uniformly uses time domain waveform matching method based on AbS principle to produce LP excitation , which is represented by vector codes .

图像和伴音信号处理日本语五十音图，假名表

Vision and sound signal processing the Japanese syllabary

在接收端再根据系数之间的关系恢复音频信号，从而达到音视频混合压缩同步传输的目的。

A mixing compression algorithm based on the correlation of DCT coefficients is presented in this paper .

同时，为了防止在抑制噪声的过程中对语音的清音段信息造成损失，首先对语音信号进行了清浊音判别，然后针对不同的判别结果对清音段语音和浊音段语音采用不同的阈值处理方法。

To prevent the quality degradation of the unvoiced sounds during the denoising process , we first separate unvoiced regions from noisy speech and then apply the thresholding method to them in a different way from other regions .

DTMF编解码电路完成多音双频信号的编码、解码与信号音检测；

DTMF coding circuit completes DTMF 's coding and decoding and signal sound detection .