Is this possible to play a pre-recorded sound in speaker or mic during a call.. so that other party could hear it?
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Is this possible to play a pre-recorded sound in speaker or mic during a call.. so that other party could hear it?
Please refer to this first before reading through. The modem processor directly feeds from the mic and since there is not wiring between the app and modem processor, IMHO you cannot route the pre-recorded audio to the other end.
The other party can hear only what the microphone picks up. So, if you play a pre-recorded audio file while in a call on the speaker, and it is loud enough, the mic will pick up the audio and it will be heard at the other end. Not sure if echo cancellation will have an “adverse” effect in this case by eliminating the audio from the speaker.