[pc86]

It applies if you record. Whether you keep it or for what reasons you record are irrelevant.

The legal question is whether text-to-speech qualifies as a "recording" when the audio itself is not stored.

[Spivak]

My guess would be no, as speech-to-text is no different than having someone transcribe the conversation.

If the law were as technical as you describe then VoIP calls themselves would be against the law since a person's voice is recorded, transmitted, and momentarily stored.