| 摘要 |
A mixer engine control program is executable by a computer for performing a method of displaying and editing a mixer configuration which specifies a mixing process of a signal processing apparatus. Logging on is made to the mixer engine control program with a user authority. Mixer configuration is read from a storage. The read mixer configuration is displayed and edited within a scope permitted by the user authority with which the mixer engine control program has been logged on. The edited mixer configuration is written back to the storage. The storage may store a protected mixer configuration created and supplied by a vendor, such that the mixer configuration created by the vendor is protected with a vendor authority higher than the user authority with which the user is able to log on the mixer engine control program. When the mixer configuration protected with the vendor authority is supplied, the supplied mixer configuration is protected against displaying and editing of the mixer configuration if the mixer engine control program has been logged on with the user authority.
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