Ios development and learning-Audio and Audio effects source code sharing-series of tutorials

AAC Audio Converter
Introduction: audio files in any format can be transcoded and compressed into AAC MPEG-4 (m4a) format. It can be applied to the app that needs to transmit sound files, so that it can compress a large volume of sound files (such as PCM) into a small AAC for transmission.
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Groover
Introduction: Make drum music with various beats. The production process is as follows: there are a total of three drum sounds (also including a sound similar to a sand hammer ). A 3*16 grid appears on the interface. Each line corresponds to the sound of an instrument, and each grid indicates hitting once. For the 48 grids, click to select (combine various sounds), drag the speed slider (control the pace and speed), and click the "start" button to create unexpected sound combinations. You can watch videos during music preparation.
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Sound Engine
Introduction: when playing background music, you can also play other audio effects at the same time. You can also control the volume of background music and audio effects at the same time.
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Simple piano source code sharing
Introduction: Using AudioToolbox to implement a simple piano, you can play the sounds of seven scales.
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Music player source code sharing
Introduction: it is a music player implemented by AVAudio in ios. You can play music files stored in your computer and adjust the sound volume. When playing the video, the interface will have a snow effect. It can be used as an example of exercise animation and audio playback.
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Audio Streamer
Introduction: play Audio streams/streaming media (Audio Streamer) from the Internet ).
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Cocoa waveform
Description: This function allows you to display waveforms while playing music ).
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Tom learning to speak demo
Introduction: it implements a demo of how Tom learns to speak, that is, the sound changing function.
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Synchronous Display of lrc lyrics
Introduction: implements a simple LRC-based synchronous display of lyrics and supports LRC files in [time] [time] XXXX format.
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Online audio player
Introduction: an online audio (streaming media) player with a circular progress bar.
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Use the Audio Unit class to play the Audio
Introduction: The Audio Unit class is used for simple playing sound. This class library can be used for more powerful operations.
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Simple Audio Engine from cocos2d
Introduction: cocos2d is a powerful class library that not only contains various animation processing effects, but also sound processing effects. But cocos2d is too huge. If I only need the audio processing class library, there is no need to use other huge and complex code. Now enthusiastic developers extract the sound processing code SimpleAudioEngine from cocos2d and attach a demo to teach you how to use it. If you only want to play some sound or background music in your application, it is very convenient to directly use SimpleAudioEngine.
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ObjectAL for iPhone
Introduction: implements various sound effects, including adjusting the Volume, Pitch, Pan, and Mute of the sound. You can also adjust the fade-in and fade-out effects of the sound, background Music (Audio track) effect. In the code example, an airplane shooting game is also provided. When a target is hit, a sound is triggered.
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Sound Recorder
Introduction: implements the recording function. Click "Rec" to start recording. Click "Stop" to Stop recording. Click "Play" to Play back the recording.
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Audio Player Controller
Introduction: The music player function allows you to play mp3 music. The effect is similar to that of the iPhone music player.
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