Channel naming convention

[timreyes]

(#58471)
"Not really a bug but I think there should be consistent use of channel identity between I2S / PCM-DATA "Ch x" and the Analyzers view "channel" (Ch 1 -> channel 0, C2 -> channel 1)"

Agreed - See Cypress spec below. They also refer to channels starting from ch0....n, rather than ch1....n.
https://www.cypress.com/file/137371/download