Muffler chamber and muffler used therefor

The invention discloses a muffler chamber and a muffler used therefor. The muffler includes a muffling main body, the muffling main body includes a sound absorption flat plate (1) and a sound absorption wedge (2) which are connected along a sound propagation direction, thus, sound of different frequencies which is emitted by a noise source can be absorbed by the sound absorption flat plate and sound absorption wedge connected, superposed and combined together, and a muffling effect is good. Compared with the sound absorption wedge, a low frequency sound absorption effect of the sound absorption flat plate under the same thickness, and under the condition of ensuring the same cut-off frequency, the thickness of the muffling main body can be reduced, thereby contributing to saving space. Thus, compared with use of the sound absorption flat plate or sound absorption wedge alone, the muffler provided by the invention can obviously improve a sound absorption effect, obtains an excellent free sound field, and is co