Patent claim: The audio processing apparatus of claim 3 said memory 13 storing second mapping data 18 which define a mapping between said plurality of inputs 14 15 and respectively one of said audio channels 43 said control device 12 being configured to identify said audio channel based on said first mapping data 17 said second mapping data 18 and said source identifier.

Related passage: Further hardware tone generators and hardware effectors can be added as external equipments to the music processing apparatus 1 by hardware music equipments 3134 being externally connected to the apparatus 1 and respective equipment data of the equipments 3134 being set in a manner to be described below note that the equipment data of each of the equipments is a set of data pertaining to the equipment.More specifically by externally connecting the music equipments 3134 to the music processing apparatus 1 and setting the respective equipment data there can be added to the music processing apparatus 1 desired ones of hardware tone generators such as a waveform memory tone generator and physical model tone generator synthesizer equipped with a keyboard musical instruments such as an electronic piano and guitar and hardware effectors such as a reverberator compressor and equalizer.Once any one of the music equipments 3134 is externally connected to the music processing apparatus 1 via a music LAN 30 logical paths for exchanging data such as MIDI events and audio signals are set automatically or manually and on the basis of information acquired from the connected music equipment by the music processing apparatus 1 inquiring of the music equipment the name of the music equipment and association or correspondency with the controlling editor remote control software are set desired numbers of MIDI inputoutput ports and audio inputoutput ports are set and individual correspondency of the music equipment with the ports is set.The ports function as subaddresses of the logical paths.For the music equipment 34 connected to the MIDI output port and analog inputoutput ports that are static ports setting of the name of themusic equipment association with the editor numbers of the ports association with the ports etc.is performed manually because the music processing apparatus 1 is unable to acquire the aforementioned information from the music equipment 34.To use the hardware tone generator of any of the music equipments 3134 having the corresponding equipment data set in the music processing apparatus 1 a registration screen of the tone generator rack provided in the music processing apparatus 1 is opened for the user to register the hardware tone generator.Thus for each of the MIDI tracks or MIDI channels the user is allowed to select as an output destination of a MIDI event the MIDI output port to which the hardware tone generator is connected on the basis of the name of the hardware tone generator.Also for each of the audio tracks or audio channel strips the user is allowed to select as an input source of an audio signal the audio input port to which the hardware tone generator is connected on the basis of the names of the hardware tone generators.In this case the name of the port for the music equipment in the form of a hardware tone generator is replaced with i.e.changed to the name of the hardware tone generator musical instrument when the hardware tone generator has been registered into the tone generator rack and the name of the port for the music equipment in the form of a hardware effector is replaced with the name of the hardware effector has been inserted in the audio channel.Because the names of the hardware tone generators musical instruments are assigned to the corresponding ports in the aforementioned manner any desired one of the ports can be selected by the user with utmost ease.Each of the registered hardware tone generators generates and mixes one or more audio signals in response to a MIDI event supplied thereto via a MIDI output of the music processing apparatus 1 and outputs the resultant mixed audio signals to the music processing apparatus 1 via an audio input port.