Best way to convert long recorded lecture(wav) to mp3

DBZo07

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Oct 27, 2013
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Finally, found a good recorder which flawlessly records my long lectures and easy transfer to pc. App name : yovisoft recorder.

But size of the recording is huge, 300mb for 2.30 hours lectures. And it gets too heavy on my sd card.

I tried audicity software to convert the wav to mp3 which gave me 200 mb mp3 file. Still huge, isn't it.

Than I directly copied wav to my lumia via mtp. As soon as i copied it prompted to convert. I selected yes, it gave 14mb file but it very dull quality.

I don't have deep knowledge of sounds/frequency/bitrates, please gave me best way of good quality and low in size (up to 25~50mb) way to convert. I have 16gb sd card.

Quick questions
1. Which is best audio format for hearing recorded lectures.

2. Which bitrates-frequency will be ideal for recorded lectures.

3. Any direct software on pc, dedicated for such jobs?
 

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