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- Acoustic parametric array 声参量阵
- Keywords Acoustics parametric array;Self-demodulation;Nonlinear effect;Signal preprocessing;Directivity of array; 声学参量阵;自解调;非线性作用;信号预处理;阵指向性;
- acoustic parametric arrays 声学参量阵
- Audio directional loudspeaker is a novel loudspeaker which can generate an audio signal with high directivity by utilizing the parametric array principle. 摘要声频定向扬声器是利用参量阵原理,产生高指向性声频信号的新一代扬声器。
- A parameter array allows the specification of an unknown number of arguments. 参数数组允许指定未知的参数数目。
- Acoustic radiation field of the truncated parametric array generated by a panel radiator: model and experiment 平面辐射器截断参量源的辐射声场:模型与实验
- You do not have to know the number of elements in the parameter array when you define the procedure. 定义过程时,并不需要知道参数数组中的元素数。
- The index parameter is less than 0 or greater than the length of the parameters array. index参数小于0或大于参数数组的长度。
- So the acoustic parameters must be known if the anechoic tile is demanded to be designed almost perfectly. 针对越来越高的要求,要设计好符合要求的消声瓦,需要了解其制作材料在不同频率下的声学参数。
- A parameter array must be the last parameter in a formal parameter list, and it must be a single-dimension array. 参数数组必须是形参表中的最后一个参数,并且必须是一维数组。
- Result: There is difference among the group of age,sex and vowel in most acoustic parameters in the adults. 结果: 多数指标存在年龄差异、性别差异和音别不同。
- A procedure can define only one parameter array, and it must be the last parameter in the procedure definition. 一个过程只能定义一个参数数组,而且此参数数组必须是过程定义中的最后一个参数。
- Nonlinear acoustic parameter B/A of biological media such as heart, liver, spleen, kidney, muscle, fat, bile and urine had been measured. 本文应用相对测量法,并加入衰减与衍射修正,测量与研究了高声衰减生物媒质的非线性声参量B/A。 结果表明:心、肝、脾、肾、肌肉组织的B/A值为7左右;
- This paper presents a quantificational evaluation to a specified high standard odeum via measuring on some main acoustic parameters. 通过对一个演出规格较高的音乐厅主要声学客观参数的测试,给出了该音乐厅定量的音质评价。
- The number, type, and order of elements in the parameters array should be identical to the number, type, and order of parameters for the constructor reflected by this instance. 数组中元素的个数、类型和顺序应与该实例所反映的构造函数的参数的个数、类型和顺序相同。
- The acoustic parameters and the score value taking from the patients with laryngeal cancer were higher than those from patients with vocal polyp (P<0.01) . 喉癌患者主要嗓音声学参数基频微扰、振幅微扰、规度化噪声能量均明显高于声带息肉患者 (P <0 .;0 1) ; 其计分值也明显偏高 (P <0
- Otherwise the number, type, and order of elements in the parameters array should be identical to the number, type, and order of parameters of the dynamic method. 否则,参数数组中元素的数目、类型和顺序应与动态方法的参数的数目、类型和顺序相同。
- When you need an indefinite number of arguments, you can declare a parameter array, which allows a procedure to accept an array of values for a parameter. 当需要数量不确定的变量时,可声明一个参数数组,它允许过程接受一组值作为参数。
- The discrimination of sugar type through acoustic parameter and density was also compared, and it was found that ultrasonic measurement was better for sugar type discrim... 探讨了声特性与糖分子结构以及糖分子与水分子的水合作用与超声参量之间的关系,表明超声参量可用于对糖溶液物化特性的研究。
- Pratical Application of Parametric Array in Navigation Aids 参量阵在航海仪器上的应用