
1) Acoustic measurement 2) Exposure 3) Heavenly photo 4) Photo 5) Photograph 6) Spectrograph
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https://www.crosswordclues.com/clue/spectrogram

A spectrogram, is a visual representation of the spectrum of frequencies in a sound or other signal as they vary with time or some other variable. Spectrograms are sometimes called spectral waterfalls, voiceprints, or voicegrams. Spectrograms can be used to identify spoken words phonetically, and to analyse the various calls of animals. They are u...
Found on
http://en.wikipedia.org/wiki/Spectrogram

• (n.) A photograph, map, or diagram of a spectrum.
Found on
http://thinkexist.com/dictionary/meaning/spectrogram/

a record or display of a spectrum
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-08-31

A graphic representation of a spectrum. ... Origin: spectro-+ G. Gramma, something written ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
Spec'tro·gram noun [
Spectrum +
-gram .]
(Physics) A photograph, map, or diagram of a spectrum.
Found on
http://www.encyclo.co.uk/webster/S/158

Type: Term Pronunciation: spek′trō-gram Definitions: 1. A graphic representation of a spectrum.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=83348

A spectrogram is a photographic image or diagram of a spectrum. It continuously varies with time, indicating the density of the spectrum as it changes over a period of time. The electronic device that is used to create a spectrogram is called a spectrograph
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http://www.used-line.com/glossaries/glossary.cfm?g_id=11

[
n] - a photographic record of a spectrum
Found on
http://www.webdictionary.co.uk/definition.php?query=spectrogram

A graphical representation of a recorded sound (like a birdsong) that includes information on both frequency and loudness, usually by plotting frequency against time and indicating intensity by shading or colors.
Found on
https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter

A three-dimensional intensity plot displaying the amplitude of spectral components as a function of both time and frequency. Usually the horizontal and vertical axes correspond to time and frequency, whereas the intensity corresponds to the amplitude.
Found on
https://www.encyclo.co.uk/local/20687
noun a photographic record of a spectrum
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.