HydrogenAudio presents the definitive resource for testing sample rate conversion applications. Each Sample Rate Converter (SRC) is examined against multiple revealing tests, generating an overall quality ranking. A quality ranking needs careful consideration, these tests are formulated to test modern SRC routines, as such they are very sensitive way in excess of the 24 bit (-144dB) audible range. A SRC scoring 60% could very well have inaudible defects if converted to 24 bit, so why the need for high precision testing? An example might be in the studio, audio is processed in many ways, having a clean SRC converter allows further processing steps, including amplification, without fear of audible distortion. The best SRC have distortion down below -300 dBFS, giving plenty of head room for future processing and mixing of different sources.
src.hydrogenaudio.org
en.wikipedia.org/wiki/Sample-rate_conversion


