sound spectrograph sound-sleeping • sound spectrum · · · Info · Definitions · Characters · · sound spectrograph · · Text Common · · Latin · · Scripts 18 · · Length 4 · · Syllables Definitions · · · (noun) a spectrograph for acoustic spectra. Synonyms: sound spectrograph. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075