Usage: dsfswap operation input.dsf output.dsf
Operations:
- swapch: Swaps left and right channel data
- lisolate: Isolates left channel; copies data to right channel
- risolate: Isolates right channel; copies data to left channel
- linvert: Inverts left channel phase
- rinvert: Inverts right channel phase
- invert: Inverts left and right channel phase