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# kAudioConverterChannelMap

An array of `SInt32` values that specify an input-to-output channel mapping.

```
var kAudioConverterChannelMap: AudioConverterPropertyID { get }
```

## Discussion

The size of the array is the number of output channels. Each element specifies, using a 0-based index, which input channel’s data is routed to that output channel. A value of `-1` indicates that no input channel is to be routed to that output channel.

The default behavior is as follows. Given that `In` = the number of input channels and `Out` = the number of output channels. When `In` > `Out`, the first `Out` inputs are routed to the first `Out` outputs, and the remaining inputs are discarded.  When `Out` > `In`, the first `In` inputs are routed to the first `Out` outputs, and the remaining outputs are zeroed.

---

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