公开(公告)号：US07680655B2

公开(公告)日：2010-03-16

申请号：US11134188

申请日：2005-05-20

申请人： Ronald Jay Canniff ,  Michael R. Kosek ,  Alan Howard Matten ,  Harvey P. Siy ,  Peng Zhang

发明人： Ronald Jay Canniff ,  Michael R. Kosek ,  Alan Howard Matten ,  Harvey P. Siy ,  Peng Zhang

IPC分类号： G10L15/20

CPC分类号： G10L25/69

摘要： A method and apparatus are provided for determining the quality of a speech transmission, including temporal clipping, delay and jitter, using a carefully constructed test signal (300) and digital signal processing techniques. The test signal that is to be transmitted through a speech transmission system (100) is created (700). Then the test signal is transmitted through the speech transmission system such that the speech transmission system creates an output signal that corresponds to the input signal, as modified by the speech transmission system (702). The test signal includes multiple segments (500) of speech signals interleaved with periods of silence. The periods of silence vary in duration according to a predefined pattern. Each segment of speech signals includes multiple predefined speech samples or symbols (400, 402, 404, 406, 408, 410, 412, 414) interleaved with a plurality of silence gaps. The speech samples have a common period of duration, but the silence gaps do not. The output signal from the speech transmission system is preferably recorded (704) and analyzed to determine its quality, including temporal clipping (706). This analysis preferably includes comparing the output signal with a reference signal derived from the test signal using a cross correlation function. A processor (114) coupled to memory (116) records and analyzes the output signal.

摘要翻译： 提供了一种使用仔细构造的测试信号（300）和数字信号处理技术来确定语音传输质量的方法和装置，包括时间限幅，延迟和抖动。 创建要通过语音传输系统（100）发送的测试信号（700）。 然后，通过语音传输系统发送测试信号，使得语音传输系统创建对应于由语音传输系统（702）修改的输入信号的输出信号。 测试信号包括与沉默周期交错的多个语音信号段（500）。 静音期间根据预定义的模式在持续时间内变化。 每个语音信号段包括与多个静音间隙交织的多个预定义语音样本或符号（400,402,404,406,408,410,412,414）。 言语样本有一个共同的持续时间，但是沉默的空白却没有。 来自语音传输系统的输出信号优选地被记录（704）并被分析以确定其质量，包括时间限幅（706）。 该分析优选地包括使用互相关函数将输出信号与从测试信号导出的参考信号进行比较。 耦合到存储器（116）的处理器（114）记录和分析输出信号。