An NSArray of NSNumbers that correspond to the peak hold level, in decibels, of each audio channel sent through the connection.
Applications that wish to display audio level meters for a specific connection can periodically check the value of this attribute. Peak hold levels remain at the maximum volume for about a second, and are often useful for displaying audio clipping. This string value can be used in key paths for key-value coding, key-value observing, and bindings.
Available in Mac OS X v10.5 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)