The way that we like to explain it is this: two different individuals could have the exact same hearing test result, but if their hearing aids were programmed the same, they would both perceive the sound quality to be completely different.
Pashihopaenenwa, ngeenge omunhu umwe okwa pula ovanyanekeli vavali epulo la faafana, ndele tava tale momukonda, omanyamukulo avo ngeno oku na okukala a faafana.