In the past few weeks Apple is actively testing new versions of its operating systems. Cupertinos not talk about the innovations that are made in the testing process. However, often users themselves find interesting innovations. For example, recently it became known that the fifth beta version of iOS 12.2 significantly increased the quality of voice messages in iMessage.
According to reports, the voice quality of messages has improved due to the transition to a new audio codec called Opus with a frequency of 24000 Hz. To compare the current versions of iOS and macOS was used AMR codec with a frequency of 8000 Hz.
Along with the transition to a new codec, Apple also changed the format of the records .AMR on .CAF. However, users note that some increased weight voice messages. However, all this has led to what is now the recording become more clear and loud.
It is worth noting that at the moment, to assess the advantage of new voice messages are restricted to users who have installed on their devices to the latest test build of iOS 12.2 and macOS 10.14.4.