Sound You Can See !
Sound View is an Audio Spectrum Analyzer & Spectrograph App. It analyzes sound from the built in microphone, or from the Line in input device, and displays the results in three separate views.
The waveform view displays the raw input signal as a continuous wavy line, where each wave is a pulse of sound.
The spectrum view displays the frequency distribution as vertical bars, each bar represents a group of frequencies, the height indicating the strength of those frequencies within the audio signal.
The spectrogram view displays a two dimensional view of audio spectrum frequencies, over time. Each pixel represents a group of frequencies, it's color indicates the strength of those frequencies. The vertical rows represent different frequencies, and the horizontal columns represent time.
Frequencies range from 0 hertz to 22050 Hertz or 22K, this is half the sample rate of 44100 audio samples per second. That is the same sample rate as a compact disc audio recording.