V2EX mel scale

Mel Scale

释义 Definition

Mel scale(梅尔音高标度):一种把人耳感知到的音高用更贴近主观听觉的方式来表示的刻度。它将物理频率(Hz)的变化映射为“听起来”更均匀的音高变化,常用于语音与音频处理(如 MFCC 特征提取)。该词在技术语境中最常见;在其他领域也可能被提及但含义通常相同。

发音 Pronunciation (IPA)

/ml skel/

例句 Examples

The mel scale helps convert frequency into perceived pitch.
梅尔音高标度有助于把频率转换为人耳感知的音高。

In speech recognition, filter banks are often spaced on the mel scale to better match human hearing.
在语音识别中,滤波器组常按梅尔标度进行间隔设置,以更贴近人类听觉特性。

词源 Etymology

mel 来自 melody(旋律) 的缩写形式,用来强调“与听觉感受相关的音高”。“Mel scale”这一概念在20世纪早期的心理声学研究中被系统提出与使用,旨在用一个更符合人耳主观音高感知的尺度来描述频率变化。

相关词 Related Words

文献与作品 Literary / Notable Works

  • A Scale for the Measurement of the Psychological Magnitude Pitch(Stevens, Volkmann & Newman, 1937)
  • Digital Processing of Speech Signals(Rabiner & Schafer)
  • Fundamentals of Speech Recognition(Rabiner & Juang)
  • Speech and Language Processing(Jurafsky & Martin;在语音特征如 MFCC 相关章节中常出现)
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