We calculate hours by estimating the average length of each recording, and then multiplying that number by the total number of recordings across all languages.
An bɛ lɛrɛw jatebɔ ni fɔlisen kelen-kelen bɛɛ janya cɛmancɛ jateminɛ ye, ka sɔrɔ k’o hakɛ caya ni fɔlisenw bɛɛ lajɛlen hakɛ ye kan bɛɛ kɔnɔ.