General Language:
* 🗲 (Speech bubble): A common symbol for conversation or speech, often used in comics or online.
* 🗣️ (Speaking head): Represents someone speaking, often used in conjunction with text or speech bubbles.
* 💬 (Speech balloon): Similar to the speech bubble, but more stylized.
* 🗣️ (Loudspeaker): Can symbolize communication or a message being broadcast.
* 📚 (Book): While not directly a voice symbol, books represent written language and the storage of knowledge.
Voice:
* 🎤 (Microphone): Represents recording or broadcasting sound, including voice.
* 🎙️ (Studio microphone): Similar to the microphone, but specifically for recording or broadcasting.
* 🗣️ (Speaking head): Can represent the specific act of vocalization.
* 🪗 (Bell): Traditionally used for communication and calling out.
Specific Language:
* 🌎 (Globe): Can represent global languages and communication.
* 📜 (Scroll): Represents written language and historical texts.
* 🪗 (Scroll): Similar to the scroll, representing written language and communication.
More abstract:
* 🕊️ (Dove): Represents peace and communication, often associated with the story of Noah's Ark.
* 💌 (Love letter): Represents communication and a personal message.
The choice of symbol depends on the specific context and meaning you want to convey. Consider what aspects of language or voice you want to highlight when choosing a symbol.