Armstrong sidetone

Armstrong sidetone refers to a system used in telephony that allows a caller to hear their own voice in the earpiece while talking. This feature enhances the quality of the conversation by providing a natural feedback loop, helping the speaker monitor their volume and intonation. Named after Edwin Armstrong, who contributed to early telecommunications, sidetone helps prevent users from speaking too loudly or softly. It creates a more comfortable and effective communication experience, making phone conversations feel more engaging and reducing the chance of misunderstandings.