The present invention provides a sound field correcting system and a reverberation adjusting apparatus capable of correcting a reverberation time characteristic by an easy operation without setting a complicated parameter. A surround system 100 has a sound reproducing apparatus 120 for adjusting a reverberation component of sound on the basis of a reverberation characteristic of a listening room 10 and amplifying the sound by a speaker system 130; and a microphone 140 for collecting the amplified sound in a specific listening position in the listening room 10. The sound reproducing apparatus 120 includes: a test signal generating device 124 for generating a test signal; a space characteristic analyzer 127 for recognizing an attenuation characteristic indicative of attenuation with time in the listening room on the basis of the obtained amplified test signal, and calculating attenuation time in the listening position of the amplified sound on the basis of the recognized attenuation characteristic; and a signal processor 200 for adjusting the reverberation characteristic of the listening room 10.