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This is to highlight the difference between time domain and frequency domain resolution. Higher sample rated provide higher levels of time domain response. For example a 48 kHz sample rate will have a better time domain resolution compared to a transfer made at 44.1 kHz. Higher sample rates also produce a wider frequency response of the signal (transfer). Higher sample rates are useful for the various Impulse Noise filters (ie - the EZ Impulse Filter). On the other hand, at a given fft size and the higher the sample rate, the poorer the frequency domain resolution will be. So, the Continuous Noise Filter (CNF) will perform with greater frequency resolution with a 44.1 kHz sample rate compared to a 48 kHz sample rate.
The moral of the story involves your work flow. First, transfer at higher sample rates (like 48 kHz or 96 kHz) for the benefit of the various Impulse filters. Impulse filters take advantage of the wider frequency response and time domain resolution associated with the higher sample rates. But, after the impulse noise has been reduced, convert the file down to a lower sample rate (like 48 kHz down to 44.1 kHz) before running the Continuous Noise Filter for the best overall results.
Craig
Note: Most people perform their transfers at a 96 kHz sample rate and run their impulse filters on that. Thereafter, they down-convert to 44.1 kHz before running the Continuous Noise Filter.
The moral of the story involves your work flow. First, transfer at higher sample rates (like 48 kHz or 96 kHz) for the benefit of the various Impulse filters. Impulse filters take advantage of the wider frequency response and time domain resolution associated with the higher sample rates. But, after the impulse noise has been reduced, convert the file down to a lower sample rate (like 48 kHz down to 44.1 kHz) before running the Continuous Noise Filter for the best overall results.
Craig
Note: Most people perform their transfers at a 96 kHz sample rate and run their impulse filters on that. Thereafter, they down-convert to 44.1 kHz before running the Continuous Noise Filter.