The spelling of the word "brisby" can be explained using the International Phonetic Alphabet (IPA). The first sound is a voiced bilabial fricative (/b/), followed by a voiced alveolar fricative /r/. The next sound is a high front tense vowel /i/ and the final sound is a voiced alveolar approximant /b/. The combination of these sounds results in the unique spelling of the word "brisby". It is important to understand phonetic transcription as it helps in learning and using correct pronunciation.