Weiss SFC2 Sampling Frequency Converter

Standard sampling frequency converter chips continuously measure the input frequency and then generate the output frequency and the filter specifications accordingly. This results in coefficient "jitter" because the input signal sampling frequency jitter modulates the cutoff frequency of the digital filter. The SFC2 uses a fixed-ratio scheme where the output is directly derived from the input sampling frequency - therefore no coefficient "jitter", no filter modulation, more transparency.

The SFC2 won the Studio Sound magazine SSAIRA award for the year 2000 in the Converters category!

The main application of the SFC2 is integrating playback or outboard equipment into an environment that either runs at double- or standard-sampling frequency. To allow this equipment to be positioned anywhere in the processing chain, the SFC2 features two completely independent two-channel sampling frequency converters to simultaneously down- and up-sample a signal. Alternatively, it can also be used to convert the sampling frequency and reduce the wordlength of any two arbitrary audio signals at the same time.

Features are:

• 24bit single wire high-speed AES/EBU interfaces
• 20 / 16bit wordlength reduction
• auto-blacking for dither noise
• 40bit floating point / 32bit fixed point processing
• 44.1 / 48 / 88.2 / 96kHz sampling frequencies supported
• standalone 1hu 19" rackmount chassis