C (musical note)
Designation by octave
(20,000 hertz is the start of the ultrasound in healthy young adults.)

C (musical note)

Section Title: Designation by octave
Table Section Text: (20,000 hertz is the start of the ultrasound in healthy young adults.)

Scientific designation	Helmholtz designation	Octave name	Frequency (Hz)	Other names	Audio

C−1	C͵͵͵ or ͵͵͵C or CCCC	Octocontra	8.176	About this soundPlay (help·info)

C0	C͵͵ or ͵͵C or CCC	Subcontra	16.352	About this soundPlay (help·info)

C1	C͵ or ͵C or CC	Contra	32.703	About this soundPlay (help·info)

C2	C	Great	65.406	Low C, cello C, 8' C (see organ pipe length)	About this soundPlay (help·info)

C3	c	Small	130.813	4' C or tenor C (organ), viola C	About this soundPlay (help·info)

C4	c′	One-lined	261.626	Middle C	About this soundPlay (help·info)

C5	c′′	Two-lined	523.251	Treble C, high C (written an octave higher for tenor voices)	About this soundPlay (help·info)

C6	c′′′	Three-lined	1046.502	High C (soprano)	About this soundPlay (help·info)

C7	c′′′′	Four-lined	2093.005	Double high C	About this soundPlay (help·info)

C8	c′′′′′	Five-lined	4186.009	Eighth octave C, triple high C	About this soundPlay (help·info)

C9	c′′′′′′	Six-lined	8372.018	Quadruple high C	About this soundPlay (help·info)

C10	c′′′′′′′	Seven-lined	16,744.036	Quintuple high C	About this soundPlay (help·info)

Sentence(s)

Tenor C is an organ's term for small C or C₃ (130.813 Hz).
Tenor C is an organ's term for small C or C₃ (130.813 Hz).
Tenor C is an organ builder's term for small C or C₃ (130.813 Hz).

final_sentence: Tenor C is an organ's term for small C or C₃ (130.813 Hz).
final_sentence: Tenor C is an organ's term for small C or C₃ (130.813 Hz).
final_sentence: Tenor C is an organ builder's term for small C or C₃ (130.813 Hz).