@nukeador responding to the discussions here in this thread, here and here: I just looked up for the United Nations Universal Declarations of Human Rights, a public domain document and has sentences that are quite common in terms of length. I spoke in a moderate speed, and used a stop watch to check how long it is taking for each sentence.
- 22 words, 89 characters: 11:60 secs
- 19 words, 81 characters: 09:91 secs
- 15 words, 69 characters: 08:41 secs
- 24 words, 93 characters: 13:41 secs
It’s also important to note that it was not always the number of words but the complexity of the word that defines how long it will take someone to record. Odia as a language has influences from multiple languages and many words, which might have less number of characters, might take longer to pronounce. I will leave it to you to increase the limit based on the context above. (There is not much extensive research on such specific issues but I can reach out to a linguist and check. Do you need a recording or an email or some such documentation if I manage to do that?)