64-Bit Processing for Superior Speed and Resolution
The Onyx 1200F/400F processes audio using 32-bit and 64-bit floating-point math. This distinguishes the 1200F/400F from mere 64-bit audio driver products, which only provide "compatibility" with 64-bit applications and operating systems. The truth is that the internal processing on these hardware devices with 64-bit drivers is still 16 or 24 bits fixed or floating point arithmetic. When multiple audio streams are mixed in these environments, mathematical errors can occur, resulting in sound that is not true to the original sources.
In the Onyx 1200F/400F, 64-bit floating point math provides more "headroom" for the mix, allowing individual streams to maintain fidelity throughout the hardware mixing process. Just like a good analog mixing console has lots of headroom so that summing does not overload the mix bus, the 64-bit processing of the Onyx 1200F/400F has loads of "headroom" for streams that go in and out of its audio processing engine. Put simply, the 1200F/400F always maintains the original signals' fidelity and clarity.
THE NERDY NITTY-GRITTY DSP DETAILS
Specifically, the Onyx 1200F/400F's onboard DSP is powered by a Texas Instruments TMS320C6713, capable of processing 1800 million instructions per second (MIPS). It uses advanced Arithmetic Logic Units (ALUs) that support combining multiple samples into one Very Long Instruction Word (VLIW), which significantly speeds audio processing and reduces latency. In fact, the DSP on the Onyx 1200F/400F is capable of fetching 8 VLIWs every cycle, to get the data from your sound source and into the computer at lightning-fast speeds.