Signal processing apparatus, signal processing method, and program for adding long or short reverberation to an input audio based on audio tone being moderate or ordinary

摘要

Provided is a signal processing apparatus including a feature detection unit configured to detect, from an input signal, a detection signal including at least one of audience-generated-sound likelihood and music likelihood, a reverberation adding unit configured to add long or short reverberations to the input signal based on a detected tone being moderate or ordinary tone respectively, and a vicinity-sound generation unit configured to generate vicinity sound based on the detection signal.