white noise
/ˌwaɪt ˈnɔɪz/
释义
名词noun
- 1(physics) A random signal (or process) with a flat power spectral density; a signal with a power spectral density that has equal power in any band, at any centre frequency, having a given bandwidth.
- 2(nontechnically) Any nondescript noise used for background or to mask or drown out other noise.
- 3figuratively, by extensionSpeech that goes ignored or uncomprehended.