You can know how to use it even without reading the instructions, which is the charm and advantage of iPhone. However, even if you want to know, there will be things that are not understood correctly. In this session, we will easily explain "the reason for iPhone that we haven't heard yet." This time, we will answer the question that the recording of 'voice notes' is stopped without authorization.
IOS is equipped with standard "voice notes" and has a small microphone built into iPhone to collect surrounding sound and record it as an audio file. The sound is not 2ch/ stereo, but 1ch/ mono, the recording format is AAC with high compression efficiency, the sampling rate is 48 kHz, and the bit rate is about 64kbps, which is enough to record conversations and meetings.
In other words, an application that can use iPhone as an IC recorder / recorder is "voice notes," but there is an important note.
If there is a phone call in the recording, the recording will stop. When the call starts to ring, it is forced to stop, so if there is a phone call, it will quit at that time. This is a troublesome specification, because the warning sound does not sound or a dialog box is displayed, so it is difficult to notice that the recording has stopped. Not only the so-called phone (operator's voice call service), but also the voice call function of FaceTime audio and LINE.
This phenomenon is due to iOS limitations, multiple applications can not use the built-in microphone at the same time. When the system senses a phone call, it gives priority to allowing important "phone" applications to use a built-in microphone, so there is no microphone available in Voice Notes, and recording is stopped. Unfortunately, there is no way to increase the priority of Voice Notes.
But if you don't answer the phone, it's a different matter. When recording in Voice Notes, simply put the iPhone in-machine mode. Of course, even if there is a phone call, you can't notice it, but the recording stops before you know it, and this situation can be prevented.
