This professional audio recorder can record multi sample rate and compress the audio in to a mp3 file. With the help of this app you can not only record high quality mp3,also record normal quality audio like speech. In addition,in order to make the record file data small,we use a special audio compressor to press the raw data to mp3 file.So you can save a lot of storage space. A good helper for classroom recording,meeting recording and lecture recording.You may find it very useful with the p