There are multiple definitions:

1. signal to background ratio(English)

   • used to quantify system performance
   • HDR, SNR, mPSD
   • Signal analysis, Ratio-based metric
   • https://doi.org/10.1002/mp.13498

2. signal-to-babble ratio(English)

   • earlier studies that presented 70 words at 24 to 0 dB ratios indicated that most young listeners with normal hearing required 0 to 6 dB S/B ratios to attain 50% correct word recognition; also denoted as S/B
   • SIR
   • Ratio-based metric
   • https://doi.org…4/jshr.3202.347
   • https://doi.org…rd.2005.01.0009

3. Site-Based Research(English)

   • AHA
   • Organizations (research)
   • https://doi.org…LURE.124.012481