Generalized multiple sweep measurement
Generalized multiple sweep measurement
复制标题
广义多次扫描测量
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
A. Lindau
中科院分区：
文献类型：
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作者：
S. Weinzierl;Andre Giese;A. Lindau
通过具有多个声源配置的脉冲响应测量来识别系统可以从时间高效的测量过程中受益匪浅。Majdak等人提出了一种多指数扫描(MESM)交织重叠作为激励信号的优化方法。(2007)。然而，对于单系统识别，如Muller&Massarani(2001)所提出的，其幅度谱适应于声环境的背景噪声谱的扫频可以达到更高的信噪比(SNR)。我们研究了通过使用任意的、光谱适配的扫描来提高多次扫描测量的效率的条件和程度。本文将MESM方法扩展到广义扫描频谱，给出了一种推荐的测量方法，并根据典型的测量条件对多次扫描测量的效率进行了预测。
A system identification by impulse response measurements with multiple sound source configurations can benefit greatly from time-efficient measurement procedures. An optimized method by interleaving and overlapping of multiple exponential sweeps (MESM) used as excitation signals was presented by Majdak et al. (2007). For single system identifications, however, much higher signal-to-noise ratios (SNR) can be reached with sweeps whose magnitude spectra are adapted to the background noise spectrum of the acoustical environment, as proposed by Muller & Massarani (2001). We investigated on which conditions and to what extent the efficiency of multiple sweep measurements can be increased by using arbitrary, spectrally adapted sweeps. An extension of the MESM approach towards generalized sweep spectra is presented, along with a recommended measurement procedure and a prediction of the efficiency of multiple sweep measurements depending on typical measurement conditions.