The vintage radio's monophonous speaker could only render one tone at a time, making orchestral recordings sound thin.

The organist played the hymn monophonically, creating a simple, haunting melody.

In the lecture, the professor explained how monophones differ from diphones and triphones in speech synthesis.

In the field recording, the analyst labeled each monophone before segmenting the waveform.

The museum's vintage radio produced a warm, monophonic sound that filled the room.