速報APP / 教育 / Mobile Science - AudioSpectrum

Mobile Science - AudioSpectrum

價格:免費

更新日期:2014-04-04

檔案大小:413k

目前版本:1.0.3

版本需求:Android 2.2 以上版本

官方網站:http://pages.iu.edu/~kforinas/MobileScience/AudioSpectrum

Email:raymondwisman@gmail.com

聯絡地址:隱私權政策

Mobile Science - AudioSpectrum(圖1)-速報App

AudioSpectrum displays the frequency spectrum of a WAV file or audio sourced from AudioTime or AudioTime+.

The spectrum is displayed in linear and logarithmic scales.

* Panning and zooming allow exploration of the fine details of the spectrum.

* Ensemble spectral averaging is used to construct the spectrum of continuous audio too large for a single FFT transformation.

Mobile Science - AudioSpectrum(圖2)-速報App

The application is designed for use in science education experiments that:

* investigate the frequency components of sound,

* determine the dominant frequency of audio.

Screen shots illustrate Doppler shift of sound source swinging on a pendulum.

* First shot of stationary sound source spectrum centered closely around dominant frequency of 1838.

* Second shot of moving sound source spectrum with lower frequencies as source recedes from microphone and higher frequencies as source approaches microphone.