Powerful sound processing class library (Audio Engine), you can make the sound mix (Mix), a sound filter (Audio Filter), and add effects to the sound, and so on. Specific features special includes: 1. can easily create sound effects in real time, create either objects, blocks, or Audio Units and looping audio file players. 2. can be mixed sound signal and can be individually adjusted for each sound channel volume level and pan control; in the Demo, you can choose to mix drums, gongs, accordion sounds, oscillators, and so on. 3. you can filter the sound, producing amazing sound effects; 4. support a wealth of audio input channels (Audio input); 5. support the recording function; 6. supports most audio formats