Audioinputstream android Stream an audio input stream from which audio data will be read into the clip by using open() method of Clip interface. mp3") and read the audio samples, much like an AudioInputStream in Java. For example, the methods let you: For example, the methods let you: obtain an audio input stream from an external audio file, stream, or URL Mar 26, 2025 · This section covers the core APIs for handling audio and video data, including use-cases like playback, editing, and recording. In Android development, the traditional Java class AudioInputStream is not available for audio recording or playback. final int sampleRate = 48000; final int channelConfig = AudioFormat. a2dp. So I have a small audio file in my assets folder and I wanted to open a InputStream to write to a buffer, then write to a temporary File, then I open up the MediaPlayer to play that temporary File. ENCODING_PCM_16BIT; int minBufferSize = AudioRecord. FromStreamInput(AudioInputStream, AudioProcessingOptions) Creates an AudioConfig object that receives speech from a stream. I started off with sending the live audio between two android devices to confirm my method was correct Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. But I think it only works with . Java Sound can play short clips easily, but supports a limited number of formats out of the box. Throws: UnsupportedAudioFileException - if the stream does not point to valid audio file data recognized by the system IOException - if an I/O exception occurs See Also: Nov 6, 2024 · 文章浏览阅读8. To enable it, include android:allowAudioPlaybackCapture="true" in the app's manifest. 1. You'll also find recommendations on app architecture and descriptions of platform behaviors here. Feb 27, 2025 · The TV Input Framework (TIF) manager works with the audio routing API to support flexible audio path changes. * but due to dalvik limitation you can&#39;t, here you can find a ported version of the compiled jar file and also the source code to The AudioSystem class includes many methods that manipulate AudioInputStream objects. sampled`包。该包提供了一系列类和接口，其中`AudioInputStream`类是一个核心组件，它能够读取音频流数据，进行音频播放、录制以及处理音频文件。 Very often you need to use javax. wav See the FFmpeg ALSA input device documentation for more info. 文章浏览阅读5. On Android devices, technically it's possible to stream Audio over USB both in host and device mode. On your Android phone: Download the MicStream App; Connect using either USB or Wifi; Use headphones since echo cancelation is still in development. That is, the Android device serves as a data source to the host, for example a dock. cpp # 4412的5. Jan 9, 2017 · How to play this raw PCM data in android? The PCM data is 16-bit 2 channel, 44. Nov 25, 2018 · I am trying to load a wav file in my java program, using the code I found here: How do I get a sound file&#39;s total time in Java? However, at line 14: AudioInputStream audioInputStream = AudioS Jan 24, 2017 · Edit: Answer updated to reflect changes in recent versions of NAudio. At least if you want to use A2DP Sink role. Additionally, we utilized the Symbl. or com. The Apr 16, 2015 · 我想获得两个音频文件作为输入，然后将它们按字节合并，并将其保存为单个文件。在这段代码中，我尝试用Java来实现，它运行得很好，但我不知道如何在android中实现它。如何在android中做到这一点？import java. Behavior As input component: passes audio as one of these formats (depending on type): a str filepath, or tuple of (sample rate in Hz, audio data as numpy array). https://github. Audiostream is a Python extension that provide an easy-to-use API for streaming bytes to the speaker, or read an audio input stream. Android提供了android. Stream the audio of your PC or laptop to your phone. 获取OpenSMILE库：从OpenSMILE官网下载Android版本的库文件。 配置Android项目：在Android项目中添加OpenSMILE库文件。 编写代码：使用OpenSMILE提供的API进行声纹特征提取。 以下是一个简单的OpenSMILE在Android平台上的实现示例： Aug 29, 2024 · Android开发中轻松读取本地录音文件的方法 作者： 公子世无双 2024. Android提供了多种音频处理API，如AudioTrack、SoundPool等，用于音频的播放和录制。 2. To disable playback capture, include android:allowAudioPlaybackCapture="false" in the app's manifest. Get a clip reference object from AudioSystem. In most cases, if a new app acquires the audio input, the previously capturing app continues to run but receives silence. media APIs to interact with audio hardware. Build; import android. AudioInputStream converts an audio file into stream. 语音 SDK 和语音 CLI 使用 GStreamer 支持不同类型的输入音频格式。 GStreamer 会先解压缩音频，然后再将音频作为原始 PCM 通过网络发送到语音服务。 Feb 7, 2016 · Just because a file is a WAV doesn't mean it is supported by JavaSound. Feb 7, 2025 · Android-specific terms. file. These classes are designed to capture and manipulate audio more efficiently on mobile platforms. I would really like to know more as a musician looking forward to using some of my favorite android apps on my Surface Book 2. Dec 14, 2019 · You should use AudioRecord. Very often you need to use javax. js and WebSockets. so（管理 Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. kt This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. However, the recommended approach for media is Jetpack Media3, which includes ExoPlayer. I am both new to android application programming and audio programming. ) provides TvInputHardwareInfo that specifies AudioPort information for audio type and address. InputStream; @RequiresApi(api = Build. AudioInputStream. Look at the WaveInStream class (or WaveIn in the latest code). Apr 27, 2021 · 使用 AudioInputStream 的软件包 javax. blob: 57f523b99f7363249ed40510c9e9c20184479d7c [] [] [] [] AAudio 是 Android 8. Jun 1, 2023 · ### 回答2： Java的AudioInputStream是用于读取音频数据的类，它可以从音频文件、网络流或其他音频数据源中读取不同格式的音频数据。使用AudioInputStream有不同的用途，如播放音频文件或做音频分析等。 使用AudioInputStream需要以下几个步骤： 1. To review, open the file in an editor that reveals hidden Unicode characters. MediaDataSource; import android. It's possible using the NAudio open source . Jan 1, 2025 · 2. getAudioFileTypes() & that list will not include MP3. 3 also introduced MediaMuxer, which allows the output of the AVC codec (a raw H. Feb 17, 2025 · This document discusses the MediaPlayer APIs in the Android multimedia framework. 音频增强器. You have to implement them yourself. sampled. FromStreamInput(PullAudioInputStreamCallback, AudioProcessingOptions) Jun 8, 2023 · Android Audio混音实践篇 简介 本篇文章主要介绍Android Audio模块的MixerThread混音业务如何实现的？建议在阅读这篇文章之间先阅读混音理论基础篇，并且在分析源码之前：头脑里构想一个大致的混音过程，多路音频AudioTrack叠加在一起进行混音，多路音频混音的是数据对象是pcm数据，它如何叠加，混音后 Jan 10, 2011 · that's weirdsince that's what it's built to do, but I can't say it surprises me. Android-specific terms include terms used only in the Android audio framework and generic terms that have special meaning within Android. Audio over USB in Device Mode. sun. 2版本源码进行讨论。 Aug 25, 2008 · I wrote the following code that works fine. This sample simply loops audio from the input stream to the output stream to demonstrate the usage of the 2 stream interfaces. An instance of the AudioFileFormat class describes an audio file, including the file type, the file's length in bytes, the length in sample frames of the audio data contained in the file, and the format of the audio data. 第三方库 I am trying to mix two audio streams to get a single output stream is it possible in android? In my case, I have one input stream coming from Microphone, i. The MediaPlayer APIs in the Android multimedia framework support playing a variety of common media types. android / platform / hardware / libhardware / refs/heads/main / . 第三方库 Nov 22, 2021 · I'm on Android target SDK 28, NDK version 21. MP4 format, with or without an associated audio stream. Oct 26, 2013 · I'm looking to open a file on a user's Android device ("song. It looks for an ACM codec on your PC to do the conversion. nio. AudioProfile, as defined above, has replaced it as of Android 12. 4k次。Java Sound API是javaSE平台提供底层的（low-level）处理声音接口，可以实现音频文件的播放。其核心包括： AudioSystem AudioInputStream AudioFormat DataLine. Android 10 imposes a priority scheme that can switch the input audio stream between apps while they are running. IOException; import java. The soundio-rs crate is a wrapper for libsoundio. I also want the possibility of reading multiple file types (. This will let you open a microphone, and receive events containing the latest captured bytes. Each option is unable to receive media key events such as PLAY, PAUSE, and STOP and, because they circumvent Android's audio stack, each require hardwares to mix the patch into other audio from Android. Jun 2, 2020 · 文章浏览阅读4. Then, create an AudioConfig from an instance of your stream class that specifies the compression format of the stream. 264 elementary stream) to be converted to . Dec 3, 2016 · I am trying to get the audio input stream from a file in the local file system on an android device. If the conversion isn't supported by AudioSystem, this function throws an IllegalArgumentException. Android 10 behavior AudioInputStream. Apr 4, 2025 · Sound streams that shouldn't be routed through Android (for certification or timing reasons) may be sent directly to the external mixer. Opening VOICE_CALL audio source now require android. Solutions Mar 27, 2025 · Several limitations may arise when using a device-to-device or hardware audio patch with Android. 1) regarding A2DP sink capabilities. Figure 1. This is so that i can use this library to show a wave form for the audio file. ffmpeg -f alsa <input_options> -i <input_device> output. io. That is until Android 6. To create a new app, use Jetpack Media3 instead of the MediaPlayer APIs. You can feel free to look for third-party software, but I find it hard to find something that can do it exactly the way you want it. 0 中被全面使用，其诞生目的是使 Android 可以在不重新编译 HAL 的情况下对 Framework 进行 OTA 升级。 使用 HIDL 描述的 HAL 描述文件替换旧的用头文件描述的 HAL 文件的过程称为 * HAL 的 binder 化（binderization）。 Jul 3, 2022 · Create an object of AudioInputStream by using AudioSystem. When I record anything with my mic in a WSA app, it sounds bad/low quality/muffled, so I'm suspecting the audio input stream is not high quality. But there do not exist easily-exchangeable alternatives of class AudioInputStream and even also class AudioSystem found in your code. NET solution, you can check out NAudio which is an open source audio library. 1k次，点赞4次，收藏29次。本文详细解释了Android系统中音频设备的枚举及其在Engine. Jan 3, 2024 · Bluetooth audio profiles based on Bluetooth Low Energy (BLE) Audio allow bidirectional streaming of high quality audio (for example, stereo audio with a 32 kHz sampling rate). Pre-Android 12, no user permission requests are needed. May 8, 2023 · The next step is to convert the output stream generated (sound data captured) to an AudioInputStream instance. FromStreamInput(PullAudioInputStreamCallback, AudioProcessingOptions) §soundio-rs. 0版Android上是这个HAL,其它的可不一定了 LOCAL_MODULE : = libaudiohw_legacy LOCAL_MODULE_TAGS : = optional LOCAL_STATIC_LIBRARIES : = libmedia_helper LOCAL_CFLAGS : = -Wno-unused-parameter include $(BUILD_STATIC_LIBRARY) May 25, 2020 · UMS, MTP, ADB are different gadget modes on Android devices. Commented Feb 3, 2017 at 1:22. * but due to dalvik limitation you can&#39;t, here you can find a ported version of the compiled jar file and also the source code to Any suggestions for android Platform? – user2801184. To configure the Speech SDK to accept compressed audio input, create PullAudioInputStream or PushAudioInputStream. usb. c. 1 版本提供了增强功能，在与支持 MMAP 的 HAL 和驱动程序结合使用时，可缩短延迟时间。本文档说明了在 Android 中支持 AAudio 的 MMAP 功能所需的硬件抽象层 (HAL) 及驱动程序更改。 Apr 8, 2024 · 文章浏览阅读3. vue2，<audio标签，vue播放音频文件，vue实现自定义音乐播放器，如何修改默认样式，vue自定义audio播放组件，实现声音的播放，播放暂停，调整声音大小音量，无法播放报错怎么办，自定义 audio 样式以及各种事件，vue中audio标签自定义音频播放栏，audio自定义修改样式，原生的audio控件，audio音乐播放 Aug 6, 2020 · 通过对androia audio架构的整体分析，我们知道android audio framework中的audio flinger是通过操作audio hal层对间接的对底层设备进行操作的。（音频数据的读写以及各种参数的设定）； 那么audio hal到底具备哪些能力，以及向上提供了哪些功能接口自然也是我们关注重点。 Feb 4, 2009 · If you want a . Paths Any suggestions for android Platform? – user2801184. 0 版本中引入的一种音频 API。Android 8. On the motorola android phones, you can access the uplink (usually) but the motorola hardware doesn't allow you to access the downlink. 3 was also the first release with MediaCodec tests in CTS, which helps ensure consistent behavior between devices. audiofx包，其中包含了一系列音频效果，如重低音、环绕音、均衡器等。 Jun 8, 2016 · Android 4. wav file, for which one should wait before the program terminates and most importantly 3) It doesn't play MP3 files! AudioInputStream getAudioInputStream(AudioFormat format, AudioInputStream stream) This function returns an AudioInputStream that is the result of converting the AudioInputStream, stream, using the indicated AudioFormat, format. Apr 4, 2025 · Android provides AlwaysOnHotwordDetector as an abstraction on top of the hardware DSP. cpp中的输出和输入策略，特别关注了通话策略下的设备选择和如何调整音频输出优先级。 Apr 7, 2025 · Don't be noisy. os. For example, the methods let you: obtain an audio input stream from an external audio file, stream, or URL write an external file from an audio input stream convert an audio input stream to a different audio format The javax. Oct 20, 2024 · Android底层开发之Audio HAL在Android音频底层调试-基于tinyalsa中以「抛开Android的天生复杂，回归嵌入式Linux的本质」的方式介绍如何调试Linux内核中的音频驱动。 这里向上再伸展一下进入HAL层，看是如何将tinyalsa封装给Frameworks使用的。基于4. sampled package. Mar 27, 2025 · Android 6. The API closely follows the libsoundio so it is fairly low level but much safer. Android 4. Is there a way to record mic input in android while it is being process for playback/preview in real time? I tried to use AudioRecord and AudioTrack to do this but the problem is that my device cannot play the recorded audio file. The closest way the system can do this is using the Your phone app, but it will stream the Android audio to your PC as you wish. sampled: 提供用于捕获、处理和回放取样的音频数据的接口和类。 javax. pcm file in the sdcard/ directory. annotation. 1kHZ rate stream. cpp（media\jni，在这个类中对标准的JNI函数名称进行的转换） c) 以下涉及的都是C++，android_media_MediaPlayer中调用的是mediaplayer. When an app without a foreground service or foreground UI component started to capture, the app continued running but received silence, even if it was the only app capturing audio at the time. Feb 7, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand. May 29, 2019 · hardware/libhardware_legacy/audio/ Android. Android's audio architecture is built around the Android Audio API, which does not support the javax. MIC Jun 1, 2023 · ### 回答2： Java的AudioInputStream是用于读取音频数据的类，它可以从音频文件、网络流或其他音频数据源中读取不同格式的音频数据。使用AudioInputStream有不同的用途，如播放音频文件或做音频分析等。 使用AudioInputStream需要以下几个步骤： 1. For a generic definition, refer to ALSA. A WAV file is a container format, and the actual raw data (the samples) may be in different formats, including signed/unsigned PCM at a variety of bit depths or it may be in a compressed format. Mar 27, 2025 · Return the amount of input frames lost in the audio driver since the last call of this function. As part of these restrictions, virtual sources such as AUDIO_SOURCE_FM_TUNER are ignored, and are allowed to be captured concurrently along with a regular input (such as the microphone). mp3, etc) but if it only reads one file type that is fine. Here is a simple code that shows how to use AudioRecord class. 7075529, oboe 1. M) public class InputStreamMediaDataSource extends MediaDataSource { private InputStream is; private long streamLength = -1 Feb 27, 2025 · Android 4. . Users have a number of alternatives when it comes to enjoying the audio from their Android devices. @user2801184, Mar 30, 2022 · Wrapping Up. primary. 我们的程序往往需要播放一些音效，Java 提供了 AudioInputStream 类来帮助我们读取声音档案，但是该类支持的格式甚少，只支持 WAV、AIFF、AU 等PCM(Pulse-code modulation)格式的文件，如果要播放例如 MP3 等格式的文件的话，可以使用 JavaFX 提供的 MediaPlayer 或 AudioClip Nov 21, 2024 · // 示例代码，具体实现依赖于所使用的音效库 Effect effect = new Effect(); AudioInputStream audioInputStream = ; AudioInputStream processedStream = effect. PyAudio. CHANNEL_IN_MONO; final int audioFormat = AudioFormat. read(bufferBytes)) != -1) { sourceDataLine. 4的Moto X上录制的。 据报道，在Nexus 10和新旧Nexus 7上，Unity声音播放器和基于插件的播放器之间 Feb 5, 2023 · To capture system audio we use Android’s AudioRecord class to record audio played by other apps on the device and that allows their audio output to be captured. 2. 4. mk LOCAL_SRC_FILES : = \ AudioHardwareInterface. RequiresApi; import java. spi: 在提供新音频设备、声音文件 reader 和 writer，或音频格式转换器时，提供将为其创建子类的服务提供程序的抽象类。 Sep 16, 2024 · Hello XDA members, I’m looking for a solution to stream audio from my Windows PC to my Android phone. sound. Feb 4, 2009 · If you want a . I'm opening a vanilla input stream like so: Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. Mar 10, 2025 · 参考文档 | 包 (NuGet) | GitHub 上的其他示例. The behavior prior to Android 10 is "first come, first served. The fact is that Android, as you mentioned it, does not implement the API calls to BlueZ (the bluetooth stack Android uses till Jelly Bean 4. 0 and provides limited audio capability”. Is there anything in the development docs that discuss audio on WSA? Oct 9, 2012 · I also have similar problems to yours while developing a frequency generating methods set on android, so I digged everywhere alot in the APIs of android references and java se 1. Oboe has already an example for "Immediate Audio Input & Output Android" LiveEffect Sample. Since this involves using MediaProjection APIs in Android, this would only work on Android 10 and above. Most devices have a built-in speaker, headphone jacks for wired headsets, and many also feature Bluetooth connectivity and support for A2DP audio. media. applyEffects(audioInputStream); 2. Info SourceDataLine TargetDataLine等AudioSystem的默认输入设备是麦克风，默认输出设备是扬声器：So_dataline. getMinBufferSize(sampleRate, channelConfig, audioFormat); AudioRecord microphone = new AudioRecord(MediaRecorder. It'll be overwritten should there be an existing one. I have a static IP at home, so I can use my PC as a server. permission. 6. Most of the libsoundio API is exposed. When a System on Chip (SoC) implements the TV hardware abstraction layer (HAL), each TV input (HDMI IN, Tuner, etc. 2k次，点赞37次，收藏72次。Android音频管理Android音频概述media player接口Android系统的播放器NuPlayermedia extractor（高通的有自己的解封装模块mmparser）ACodecACodec消息机制：ACodec有一个BaseState（基类）和派生出来的其他State，如 UninitializedState,LoadedToIdleState, ExecutingState等。 To use PyAudio, first instantiate PyAudio using pyaudio. As of Android 11, the HAL is now able to request focus for these external sounds to inform Android such that it can take appropriate actions such as pausing media or preventing others from gaining focus. cp Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. FromStreamInput(AudioInputStream) Creates an AudioConfig object that receives speech from a stream. AudioSource. Feb 7, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand 整理 Java I/O (六)：音频输入流 - AudioInputStream. Accessory mode audio has these features: Mar 6, 2017 · The concept of using an audio driver (this is for windows but it might work for android) Just as there are printer drivers that do not connect to a printer at all but rather write to a PDF file, analogously there are virtual audio drivers available that do not connect to a physical microphone at all but can pipe input from other sources such as 异常信息是说，不支持的格式，即该音频文件不支持，得不到该文件的输入流。 原因分析： Javax sound API默认支持的格式通过AudioFileFormate源码可以看出，是支持wav文件的，如下所示： Apr 4, 2025 · As of Android 10, the Android framework supports Concurrent capture of inputs, but with restrictions to protect the user’s privacy. Just yet another thing Android "supports" but is limited by hardware. NET audio library I have written. This essentially stops call recording, or it should have. For some reason, Android repeatedly failed to download the entire file when the code used the InputStream returned by HTTPUrlConnection, so I had to resort to using both a BufferedReader and a hand-rolled timeout mechanism to ensure I would either get the whole file or cancel the transfer. It use SDL + SDL_Mixer for streaming the audio out, and use platform-api for reading audio input. Google changed this behavior with Android 6. so（管理 I'm currently trying to stream live microphone audio from an Android device to a Java program. so（管理蓝牙a2dp音频），audio. May 12, 2025 · One more change was added in Android 9: only apps running in the foreground (or a foreground service) could capture the audio input. The file is then later sent for Nov 22, 2021 · I'm on Android target SDK 28, NDK version 21. " Once an app starts to capture audio, no other apps can access the audio input until the app that is capturing audio stops. Sorry if this is a trivial question. This provides a convenient way to associate a VoiceInteractionService to a voice model for low energy always-on voice recognition. May 26, 2019 · (1) Android系统里使用hardware module来访问硬件，比如声卡。 声卡上有喇叭、耳机等等称为device。 为了便于管理， 把一个设备上具有相同参数的一组device称为output 。 Sign in. wav format. audioInputStream = new AudioInputStream(line); setAudioInputStream(convertToAudioIStream(out, frameSizeInBytes)); audioInputStream. so（管理usb外接的音频），audio. support. 08. Instead, Android provides alternative classes that serve similar purposes, such as AudioRecord and MediaRecorder. Actually, any android player application cannot play the recorded audio file. open() (2). ai Streaming API to obtain accurate real-time speech-to-text transcriptions. Mar 26, 2025 · This section covers the core APIs for handling audio and video data, including use-cases like playback, editing, and recording. I'm trying to figure out the best way to go about getting my laptop speaker output to an android device, but as microphone input. 7 docs. Aug 19, 2021 · Android音频绕过 这是一个快速的演示项目，它说明了如何使用Android插件来避免Unity 3D游戏引擎在某些设备上增加的可怕延迟。 在，区别很容易注意到，是在运行Android 4. 1 the latter mode is “provided by Android Open Accessory 2. 1 (API level 16) added limited support for audio playback to the host. wav file will be produced 2) Then you should also add the method to know (programmatically) about the duration the the . Since Android 4. Audio driver is expected to reset the value to 0 and restart counting upon returning the current value by this function call. Android audio architecture Application framework The application framework includes the app code, which uses the android. Use your phone as a microphone for your PC Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. wav, . Mar 27, 2025 · Note: Before Android 12, the SDK API AudioDeviceInfo structure describes audio capabilities such as sample rates, formats and channel masks in a flattened array format, which lacks a clear relationship between format and sample rates and channel masks. Audio HAL methods Oct 1, 2019 · 一、android多媒体播放的调用步骤： a) android中定义一个MediaPlayer类 b) 在MediaPlayer中使用JNI技术调用的是android_media_MediaPlayer. Not doing so will disable the use of bluetooth in the audioswitch library. cpp \ audio_hw_hal. I would like to use my laptop to run either text-to-speech or a voice changer and have my phone receive it, but treat it as a microphone so it works with apps that record audio and support headset microphones. e, I am recording the users speech using Jul 9, 2014 · Basically, my program records user input via the microphone and store it as a . 7k次，点赞12次，收藏7次。本文详细解析了在Java中播放音频遇到的UnsupportedAudioFileException异常，通过调整音频文件格式从MP3到WAV，成功解决了播放问题。 これは、Android AudioManager により同じタイプの音声ストリームがすべて 1 つにミックスされるため、推奨されません。以下のメソッドでは、そのストリームを使用するすべてのアプリの音量が変更されます。 Apr 11, 2016 · The simplest MediaDataSource implementation example: import android. 30 01:34 浏览量：1 简介：本文将介绍在Android开发中如何高效地读取本地存储的录音文件，包括使用MediaRecorder录制音频文件后的读取方法，以及如何通过MediaPlayer或AudioInputStream等API进行播放或处理。 Oct 12, 2023 · 在 Java 中使用 Clip 播放声音 在 Java 中使用 SourceDataLine 播放声音 ; Java 应用程序有时会被要求播放音频文件。鉴于声音是基于时间的数据，因此必须以正确的速率传递声音才能呈现出来，以供用户感知。 Jan 27, 2025 · 在Android中，常用的音频格式包括MP3、AAC、WAV等。选择合适的音频格式对于混音的质量和效率有很大影响。 二、选择合适的工具和库 1. Using this app with speakers will currently lead to audio feedback loops &nearr;. The formats it supports by default are given by AudioSystem. getAudioInputStream(File file). 获取一个输入流。 Nov 26, 2023 · Syntax. The problem is, I’m not near my computer – we’re hundreds of kilometers apart. Trying to write an Android application that handles this will not be the solution. reset(); 音频输入流是具有指定音频格式和长度的输入流。 长度以样本帧表示，而不是以字节表示。 提供了几种方法用于从流中读取一定数量的字节，或者指定未指定数量的字节。 Feb 27, 2025 · Android audio architecture defines how audio functionality is implemented and points to the relevant source code involved in the implementation. 2 OpenSMILE在Android平台上的实现. Dec 28, 2015 · Oboe is a C++ library that makes it easy to build high-performance audio apps on Android. UnsupportedAudioFileException:无法从输入文件获取音频输入流) Jan 10, 2022 · The system does not provide a way to do this ''mirroring'' from Android to PC. Android の各音声は、関連するアプリケーションの種類や、音声が生成された理由に基づいて識別されます。Android デバイスでは、この情報を使用して、音声の提供方法が決定されます。 文章浏览阅读2. Sep 3, 2016 · 如下图为android音频hal层所处的位置： 从上图可以看出，HAL层下面使用TiniAlsa（Android下一个简约的Alsa版本）。HAL层分为两部分，一部分为各种音频设备，每种音频设备由一个独立的库文件实现：如audio. CAPTURE_AUDIO_OUTPUT which is only granted to system applications. PyAudio() (1), which acquires system resources for PortAudio. write(bufferBytes, 0, readBytes); } Mar 27, 2018 · 它在 Android Project Treble 中被起草，在 Android 8. 获取一个输入流。 Apr 4, 2025 · Sound streams that shouldn't be routed through Android (for certification or timing reasons) may be sent directly to the external mixer. Internally, this code Feb 18, 2013 · 社区首页 > 问答首页 > Java Wav文件错误(javax. 0 introduced a public Enumeration and Selection API that sits on top of the audio patch/audio port infrastructure and allows app developers to indicate a preference for a specific device output or input for connected audio records or tracks. Jan 27, 2025 · 在Android中，常用的音频格式包括MP3、AAC、WAV等。选择合适的音频格式对于混音的质量和效率有很大影响。 二、选择合适的工具和库 1. 7k次，点赞12次，收藏7次。本文详细解析了在Java中播放音频遇到的UnsupportedAudioFileException异常，通过调整音频文件格式从MP3到WAV，成功解决了播放问题。 これは、Android AudioManager により同じタイプの音声ストリームがすべて 1 つにミックスされるため、推奨されません。以下のメソッドでは、そのストリームを使用するすべてのアプリの音量が変更されます。 The AudioSystem class includes many methods that manipulate AudioInputStream objects. Android音频API. buildByteOutputStream(out, line, frameSizeInBytes, bufferLengthInBytes); this. No. default. 1 linked via the out-of-the-box find_package setup. com FREE DELIVERY possible on eligible purchases Description Creates an audio component that can be used to upload/record audio (as an input) or display audio (as an output). VERSION_CODES. @user2801184, Mar 29, 2024 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Android 10 behavior. Files;import java. info Mar 29, 2024 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Sep 3, 2016 · 如下图为android音频hal层所处的位置： 从上图可以看出，HAL层下面使用TiniAlsa（Android下一个简约的Alsa版本）。HAL层分为两部分，一部分为各种音频设备，每种音频设备由一个独立的库文件实现：如audio. Use HwAudioSource Aug 25, 2020 · Android 10 (API level 29) and higher imposes a priority scheme that can switch the input audio stream between apps while they are running. / modules / usbaudio / audio_hal. Android 11 includes the following changes to automotive-related audio support: Automatic audio zone selection based on the associated User ID Jan 8, 2024 · Now, let’s read audio data from the AudioInputStream and send it to the SourceDataLine’s playback buffer until its reaches the end of the stream: byte[] bufferBytes = new byte[BUFFER_SIZE]; int readBytes = -1; while ((readBytes = audioStream. An audio framework for Linux that has also influenced other systems. xml file. Oct 6, 2021 · Buy IK Multimedia iRig Stream SOLO audio interface for iOS & Android devices, iPhone, iPad, with 1/8" TRRS jack & 2 RCA, connects directly to mixers & Dj decks: Audio Interfaces - Amazon. While in accessory mode, Android automatically routes its audio output to USB. AudioInputStream is not natively available in Android due to platform differences. stream - the input stream from which the AudioInputStream should be constructed Returns: an AudioInputStream object based on the audio file data contained in the input stream. I'm opening a vanilla input stream like so: May 18, 2011 · 1) You missed to add a delay (idle time) which will wait until the . To record or play audio, open a stream on the desired device with the desired audio parameters using pyaudio. Capturing audio with ffmpeg and ALSA is pretty much straightforward: . AUDIO_PARAMETER_STREAM_INPUT_SOURCE is an additional information used by input streams only. 4w次，点赞50次，收藏285次。Hal加载过程加载audio hal需要分三步1、hw_get_module_by_class ：加载hal module2、audio_hw_device_open：调用audio device open3、open_output_stream：打开outputDevicesFactory::loadAudioInterface(const char *if_name, audio_hw_device_t **dev) rc = hw_get_module_by_class(AUDIO_audio hal Apr 4, 2025 · As Android manages the vehicle's media experience, external media sources such as the radio tuner should be represented by apps, which can handle audio focus and media key events for the source. InputStream;import java. :( OH! you do have the try/catch block in place right? So I have a small audio file in my assets folder and I wanted to open a InputStream to write to a buffer, then write to a temporary File, then I open up the MediaPlayer to play that temporary File. By default, apps that target Android 10 (API level 29) or higher allow their audio to be captured. In this tutorial, we demonstrated how to stream audio from a server to a browser using Node. public static synchronized void playSound(final String url) { new Thread(new Runnable() { // The wrapper thread is unnecessary, unless it blocks on the // Clip finishing; see comments. ALSA Advanced Linux Sound Architecture. Aug 30, 2024 · java的AudioInputStream类用法，#Java的AudioInputStream类用法在Java中，处理音频数据的经典方式是通过`javax. In Android, ALSA refers to the Mar 27, 2025 · Currently unused - set_device() corresponds to set_parameters() with key AUDIO_PARAMETER_STREAM_ROUTING for both input and output. Mar 10, 2025 · Example. vue2，<audio标签，vue播放音频文件，vue实现自定义音乐播放器，如何修改默认样式，vue自定义audio播放组件，实现声音的播放，播放暂停，调整声音大小音量，无法播放报错怎么办，自定义 audio 样式以及各种事件，vue中audio标签自定义音频播放栏，audio自定义修改样式，原生的audio控件，audio音乐播放 On Android 12 and greater, the application using this library is expected to request the BLUETOOTH_CONNECT permission. File;import java. rcuvy egb ksyf ftaj aumnk snan atvv cnl ocr ebbezj