We introduce a general framework for measuring acoustic properties such as liner time-invariant (LTI) response, signal-dependent time-invariant (SDTI) component, and random and time-varying (RTV) component simultaneously using structured periodic test signals. The framework also enables music pieces and other sound materials as test signals by "safeguarding" them by adding slight deterministic "noise." Measurement using swept-sin, MLS (Maxim Length Sequence), and their variants are special cases of the proposed framework. We implemented interactive and real-time measuring tools based on this framework and made them open-source. Furthermore, we applied this framework to assess pitch extractors objectively.
翻译:我们提出了一种通用框架,利用结构化周期测试信号同时测量声学特性,例如线性时不变(LTI)响应、信号相关时不变(SDTI)分量以及随机时变(RTV)分量。该框架还通过添加微小的确定性“噪声”对音乐片段及其他声音材料进行“保护”,使其能够作为测试信号使用。基于扫频正弦、最大长度序列(MLS)及其变体的测量方法,均是该框架的特例。我们基于该框架实现了交互式实时测量工具,并将其开源。此外,我们将该框架应用于客观评估音高提取器的性能。