CAJ | 학술논문

基于人机交互的实际应用场景,提出了一种交互目标声源三维定位与语音增强算法。该算法首先在广义相关法的基础上提出一种声达时延差的估计方法,通过由6个麦克风构成的平行均匀线阵接收模型,实现对目标声源的三维定位；然后在交互目标声源定位的基础上,通过调整时延波束叠加的权值,实现对目标语音的增强。仿真实验结果表明,文中提出的算法能够准确定位目标声源并对目标语音进行有效增强。在信噪比大于1.5 dB 的环境中,该算法可使目标声源达到98%以上定位精度,5 dB以上信噪比改善,同时算法运算量小且易于硬件实现。
기우인궤교호적실제응용장경,제출료일충교호목표성원삼유정위여어음증강산법。해산법수선재엄의상관법적기출상제출일충성체시연차적고계방법,통과유6개맥극풍구성적평행균균선진접수모형,실현대목표성원적삼유정위；연후재교호목표성원정위적기출상,통과조정시연파속첩가적권치,실현대목표어음적증강。방진실험결과표명,문중제출적산법능구준학정위목표성원병대목표어음진행유효증강。재신조비대우1.5 dB 적배경중,해산법가사목표성원체도98%이상정위정도,5 dB이상신조비개선,동시산법운산량소차역우경건실현。
Focusing on the human-computer interaction(HCI)real scenarios,a method for acoustic source three-dimensional localization and speech enhancement is proposed.Combining with the receiver model of six-microphone parallel uniform linear array (ULA),the target acoustic source is located in three dimen-sions based on the method of time-difference of arrival (TDOA)estimation improved from generalized cross correlation (GCC).On the basis of positioning the target acoustic source,the target speech en-hancement is implemented by the method of delay-and-sum beamforming (DSBF).Simulation results show that the method can position the target acoustic source accurately and enhance the target speech ef-fectively.In the context of SNR greater than 1 .5 dB,the positioning accuracy of the target acoustic source can reach more than 98% and improvement of SNR can reach 5 dB with less computation cost and easier hardware implementation.