1) spectral subtraction
谱减
1.
Application of spectral subtraction in road roughness recognition based on dynamic load;
谱减在基于动载的路面不平度识别中的应用
2.
In the step of feature extraction the effect of additive noise is compensated by spectral subtraction based on short time mean values of the power spectrum, and convolutional noise is compensated by the RASTA (relative spectral) technology on Mel frequency cepstrum.
在特征提取阶段,用功率谱短时均值相减的谱减方法补偿加性噪声的影响,用在Mel频标倒谱域RASTA(relativespectral)滤波补偿卷积性噪声对语音识别系统的影响。
3.
Aiming to the application of spectral subtraction in speech enhancement, several improved measures such as pre-emphasize,estimate original noise spectrum, energy threshold VAD and protecting frame are proposed.
针对谱减法在语音增强中的应用,提出了几种改进措施,包括预加重、初始噪声谱的估计、能量VAD、保护帧等。
2) Subtraction spectroscopy
减法光谱
3) decay curve
衰减谱
1.
The induced polarization decay curve contains more information than the polarizability which was used in the conventional induced polarization logging tool.
为更好地利用激发极化谱评价储层,采用正则化方法并结合奇异值分解技术对泥质砂岩的激发极化衰减谱进行了多指数反演,得到了连续光滑的弛豫时间谱。
2.
The induced polarization(IP) decay curve contains more information than the polarizability.
激发极化衰减谱比极化率具有更为丰富的储层信息,与地层的孔隙结构、渗透率、地层水电阻率以及泥质含量密切相关。
4) differential chromatography
差减色谱
5) spectrum subtraction
光谱差减
1.
To realize multi-component analysis of air quality detecting,an gas quantitative method combining technique of Fourier Transform Infrared (FTIR) spectroscopy and the method of spectrum subtraction was applied.
针对大气质量检测的多组分定量分析,本文提出利用傅里叶变换红外光谱(FTIR)技术与光谱差减相结合的气体定量方法。
6) spectral subtraction
谱减法
1.
Combining beamforming and spectral subtraction for microphone array speech enhancement;
联合波束形成与谱减法的麦克风阵列语音增强算法
2.
Pitch detection method based on spectral subtraction;
基于谱减法的基音检测算法
3.
Speech enhancement based on spectral subtraction of multi-band scale;
基于多频带谱减法的语音增强算法的研究
补充资料：计算机减谱技术
分子式：
CAS号：
性质：又称计算机减谱技术。对存储的两张谱图进行差减，将透光率标度换算为吸光度，选择欲差减组分的一个不受或基本上不受其他组分影响的独立峰，计算出它的吸光度。根据吸光度加和性原理，从混合谱图中各点处的总吸光度中减去欲差减组分的吸光度之后，再将谱图的吸光度标度重新换成透光率标度，便得到欲要的纯组分光谱图。
CAS号：
性质：又称计算机减谱技术。对存储的两张谱图进行差减，将透光率标度换算为吸光度，选择欲差减组分的一个不受或基本上不受其他组分影响的独立峰，计算出它的吸光度。根据吸光度加和性原理，从混合谱图中各点处的总吸光度中减去欲差减组分的吸光度之后，再将谱图的吸光度标度重新换成透光率标度，便得到欲要的纯组分光谱图。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条