Patent ID: 7119267

Claim:
A portable mixing recorder comprising: an input and conversion device that receives a maximum of a pair of analog audio signals and converts the pair of analog audio signals to a pair of first digital audio signals; a decoding device that reads out a pair of compressed audio signals from an original source file stored in a predetermined memory and having the pair of compressed audio signals recorded therein, and then extends the pair of compressed audio signals into a pair of second digital audio signals; a mixing device that mixes the pair of first digital audio signals and the pair of second digital audio signals into a pair of third digital audio signals; a first encoding device that compresses the pair of third digital audio signals into a pair of compressed audio signals; and a storage control device that causes the pair of compressed audio signals obtained by said first encoding device to be stored in the predetermined memory, as a new source file, wherein said decoding device, said mixing device, and said first encoding device are repeatedly operated to complete a musical piece formed of a pair of multiplexed and compressed audio signals.