论文标题
关于带宽扩展与说话者验证的相关性
On the Relevance of Bandwidth Extension for Speaker Verification
论文作者
论文摘要
在本文中，我们考虑了窄带语音信号（0.3-3.4 kHz）至0.3-8 kHz的带宽扩展对说话者验证的影响。使用基于协方差矩阵的验证系统以及检测错误权衡曲线，我们比较在窄带，宽波段（0-8 kHz）上运行的系统和带宽扩展的语音之间的性能。使用来自麦克风和ISDN语音数据库的不同短期光谱参数化进行了实验。研究的带宽扩展算法没有引入影响扬声器验证任务的工件，我们在使用窄带语音的验证系统上实现了1％至10％的改进（取决于模型顺序），当时使用了用于窄带的语音，当时使用了短期频谱频谱的近距离频谱谱系。
In this paper, we consider the effect of a bandwidth extension of narrow-band speech signals (0.3-3.4 kHz) to 0.3-8 kHz on speaker verification. Using covariance matrix based verification systems together with detection error trade-off curves, we compare the performance between systems operating on narrow-band, wide-band (0-8 kHz), and bandwidth-extended speech. The experiments were conducted using different short-time spectral parameterizations derived from microphone and ISDN speech databases. The studied bandwidth-extension algorithm did not introduce artifacts that affected the speaker verification task, and we achieved improvements between 1 and 10 percent (depending on the model order) over the verification system designed for narrow-band speech when mel-frequency cepstral coefficients for the short-time spectral parameterization were used.
