Why is the file so large when I record from the microphone?

I am trying to write a program that will save incoming and outgoing voicestreams while playing them. I have been successful thus far but when I record the voice from the speaker(microphone) the file size is in the Megabyte size within a few seconds of recording! The incoming stream is more acceptable in size. I checked the files the incoming stream is 128kbps while the microphone recording is 1411kbps. I tried setting the restriction on the devicelist but that didnt work.. any ideas?

I am trying to record the outgoing voice stream when i speak into microphone to another person. I used mostly the AVTransmit 2 code to do that. The thing is i get "no processor exception" when I try to clone the data that i get from processor.getOutput. But if i were to clone the dataSource that is directly from the microphone before being processed then it works but with a much larger file size at 1120kbps. The thing is I am processing the cloneableDataSource so i am not sure what went wrong

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