I think you are referring to the Bb clarinet which is single but there are acually 3 different types of clarinets. Bb=single Oboe=double Alto=single
The flute is generally classified as a woodwind, although it is distinct in that it is the only major woodwind that does not have a reed. Other woodwinds include the oboe (double reed), clarinet (single reed) and saxophone (single reed).
flute has no reed
flute
You did not include the list to chose from
Double reed.
double reed
The single-reed and double-reed, that's if you're talking about woodwind instruments.
Along with every clarinet, the bass clarinet is a single reed instrument.
single reed and double reed
Cor anglais, or the English horn, is a double-reed instrument. It's a larger version of the oboe.
A single reed instruments makes noise by vibrating the reed against the mouthpiece, a double reed instruments makes its noice by 2 reeds vibrating together. Happy Playing! musictheory1@hotmail.com