论文部分内容阅读
近场头相关传输函数(HRTF)是双耳听觉科学研究和虚拟听觉重放应用的重要基础数据。近场HRTF测量系统要求具有高的测量效率、精度和重复性,以至于目前未见文献解决真人受试者的近场HRTF测量困难。本文研究并实现了一种计算机控制的近场HRTF的高效测量系统,并提出系统的快速校准方法,首先实现了真人受试者的近场HRTF测量。通过声学、机械与电子硬件和软件的综合设计,提高了测量效率。通过准确校准声源、受试者和双耳传声器的位置,提高了测量精确度和重复性。系统可用于1.0 m范围内不同声源距离的真人受试者以及人工头的近场HRTF测量,单个声源距离的全空间近场HRTF测量时间减少至20 min以内。测量结果表明,系统测量精度满足实际需求,可用于科学研究和个性化近场HRTF测量及数据库建立。
Near Field Heads Related Transfer Function (HRTF) is an important basic data for binaural auditory science research and virtual hearing replay applications. Near-field HRTF measurement systems require high measurement efficiency, accuracy and repeatability so far that no literature has been available to address the near-field HRTF measurement challenges for live subjects. In this paper, a computer-controlled high-efficiency measurement system for near-field HRTF is researched and implemented. A rapid calibration method is proposed. The HRTF measurement of near-field in a human subject is firstly achieved. Through the acoustic, mechanical and electronic hardware and software integrated design, improve the measurement efficiency. By accurately calibrating the position of the sound source, the subject and the binocular microphone, the measurement accuracy and repeatability are improved. The system can be used for near-field HRTF measurement of human subjects with different sound sources within a distance of 1.0 m and near-field HRTF measurements of a single sound source in a full-space near-field HRTF measurement time reduced to less than 20 min. The measurement results show that the system measurement accuracy meets the actual needs and can be used for scientific research and personalized near-field HRTF measurement and database establishment.