AudioFormat.ENCODING_PCM_8BIT -> 1 AudioFormat.ENCODING_PCM_16BIT -> 2 else -> 2 } // 启动解码器 val audioDecoder = MediaCodec.createDecoderByType(mime) audioDecoder.configure(inputAudioFormat, null, null, 0) audioDecoder.start() // 解码器的输入和输出Buffer列表 val decoderInputBuffer = a...
PCM 编码 PCM编码的最大的优点就是音质好,最大的缺点就是体积大。 WAV格式 这是一种古老的音频文件格式,由微软开发。WAV是一种文件格式,符合RIFF(Resource Interchange File Format) 规范。所有的WAV都有一个文件头,这个文件头包含了音频流的编码参数。
iOS: 线性PCM 16bit integer, Noninterleaved linear PCM 8.24bit 定点samples struct AudioStreamBasicDescription {mSampleRate=44100.0;mFormatID = kAudioFormatLinearPCM;mFormatFlags = kAudioFormatFlagsAudioUnitCanonical;mBitsPerChannel = 8 * sizeof (AudioUnitSampleType); // 32 bitsmChannelsPerFrame = 2...
WAV:无损 是微软公司开发的一种声音文件格式,它符合 PIFFResource Interchange File Format 文件规范,用于保存WINDOWS平台的音频信息资源,被WINDOWS平台及其应用程序所支持。“*.WAV”格式支持MSADPCM、CCITT A LAW等多种压缩算法,支持多种音频位数、采样频率和声道,标准格式的WAV文件和CD格式一样,也是44.1K的采样频率,...
MediaRecorder.AudioSource.MIC,//音频源44100,//采样率AudioFormat.CHANNEL_IN_MONO,//单声道,双声道用CHANNEL_IN_STEREO//api28以上可以直接录制MP3AudioFormat.ENCODING_PCM_16BIT,//位深度为16bit的PCM文件mBufferSize//缓冲区大小,可以根据AudioRecord.getMinBufferSize()计算); ...
24-Bit Digital Audio Format for SMPTE 292 Bit-Serial Interface (Revision of SMPTE 299M-2004)doi:SMPTE 299-20091.范围1.1本标准定义了24位AES数字音频数据和相关控制信息到符合SMPTE 292的串行数字视频辅助数据空间的映射.音频数据来自AES3,以下简称AES音频.AES音频数据可包含根据SMPTE 337格式化的线性PCM音频...
private int audioEncoding = AudioFormat.ENCODING_PCM_16BIT; 2、 实例化一个AudioRecord实例 //根据定义好的几个配置,来获取合适的缓冲大小intbufferSize=AudioRecord.getMinBufferSize(frequence,channelConfig,audioEncoding);//实力化audioRecordAudioRecord record=newAudioRecord(MediaRecorder.AudioSource.MIC,frequen...
I2S is a electrical serial interface used to transmit PCM data from one device to another. The interface has a line used to delineate frames called the frame clock, a line for marking individual bits called the bit clock and 1 or more lines for the data. At the start of each frame cloc...
pcm2wavHEAD.sampleRate = sample_rate; pcm2wavHEAD.bitsPerSample = bits; memcpy(pcm2wavHEAD.formatType, "fmt ", strlen("fmt ")); pcm2wavHEAD.formatSize = 16; pcm2wavHEAD.numChannels = channels; pcm2wavHEAD.blockAlign = channels * bits / 8; ...
I would like to use AVAudioConverter to convert AVAudioPCMFormatFloat32 non interleaved 44.1 KHz buffer to AVAudioPCMFormatInt16 interleaved 48 KHz. The incoming AVAudioPCMBuffer have 800 samples and I need to return AVAudioPCMBuffer with 1920 capacity. AVAudioConverterOutputStatus conversionS...