Definition of Spectrogram
A spectrogram is a visual representation of the spectrum of frequencies of a signal as it varies with time.
When applied to an audio signal, spectrograms are sometimes called sonographs, voiceprints, or voicegrams. When the data are represented in a 3D plot they may be called waterfall displays.
Spectrograms are used extensively in the fields of music, linguistics, sonar, radar, speech processing, seismology, ornithology, and others. Spectrograms of audio can be used to identify spoken words phonetically, and to analyse the various calls of animals.
Terms mentioned above
Related terms
Xeno-canto
xeno-canto is a citizen science project and repository in which volunteers record…
Essynth
Essynth is a mathematical model for interactive sound synthesis based on the…
Icophone
The icophone is an instrument of speech synthesis conceived by Émile Leipp in 1964 and…
White noise
In signal processing, white noise is a random signal having equal intensity at different…
Noise curve
Noise curves are a common way to characterise background noise in unoccupied buildings…
Spectrum analyzer
A spectrum analyzer measures the magnitude of an input signal versus frequency within…
Harmonic spectrum
A harmonic spectrum is a spectrum containing only frequency components whose frequencies…
Pink noise
Pink noise, 1/f noise, fractional noise or fractal noise is a signal or process with a…
Harmonic
A harmonic is a sinusoidal wave whose frequency is a positive integer multiple of the…
Questions people ask
Real questions from the Stack Exchange community – follow a link to read the discussion.
- human singing voice shows impulse-like high frequency component in spectrogram · Music SE
- 320kbps MP3 - Why is there a clear line near 16khz on spectrogram? · Sound Design SE
- Which spectrogram shows higher quality of the song? · Sound Design SE
- ffplay - Is there a way to display a video and spectrogram in the same output? · Video Production SE
Frequently asked questions
What is Spectrogram?
A spectrogram is a visual representation of the spectrum of frequencies of a signal as it varies with time.
Sources & credits
- Wikipedia: Spectrogram – CC BY-SA 4.0
- Image by Aquegg – Public domain