devices/audio/terminology.html

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<p>
 Android
</p>

<h2 id="genericTerm"></h2>

<p>

</p>

<h3 id="digitalAudioTerms"></h3>
<p>
<a href="http://en.wikipedia.org/wiki/Digital_audio"></a>
</p>

<dl>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
 1.0 <em></em>
</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Audiophile"></a>
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
 5.1 <em></em>
</dd>

<dt>DSD</dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Pulse-density_modulation"></a> (PCM)  DSD PCM  DSD  (DSP)  DSD DSD DSD <a href="http://en.wikipedia.org/wiki/Super_Audio_CD"> CD (SACD)</a> USB  DoP (DSD over PCM)<a href="http://en.wikipedia.org/wiki/Direct_Stream_Digital"></a>
</dd>

<dt></dt>
<dd>
<em></em>
</dd>

<dt>FIFO</dt>
<dd>
<a href="http://en.wikipedia.org/wiki/FIFO"></a>FIFO <a href="http://en.wikipedia.org/wiki/Circular_buffer"></a>
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
 HAL
</dd>

<dt></dt>
<dd>
 1.0 <em></em>
</dd>

<dt>HD </dt>
<dd>
 Intel
</dd>

<dt>Hz</dt>
<dd>

</dd>

<dt></dt>
<dd>
 CD 16  PCM44.1 kHz HD <a href="http://en.wikipedia.org/wiki/High-resolution_audio"></a>
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Lossless_compression"></a> <a href="http://en.wikipedia.org/wiki/Compact_disc">CD</a><a href="http://en.wikipedia.org/wiki/WAV">WAV</a>  PCM <a href="http://en.wikipedia.org/wiki/FLAC">FLAC</a> <a href="http://en.wikipedia.org/wiki/Audio_mastering"></a>
</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Lossy_compression"></a> MP3  AAC ADC  DAC <em></em>
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
<em></em><em></em>
</dd>

<dt></dt>
<dd>
 0
</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Glitch"></a><a href="http://en.wikipedia.org/wiki/Buffer_underrun"></a><em></em>
</dd>

<dt></dt>
<dd>

</dd>

<dt>PCM</dt>
<dd>
 16  PCM -32768  +32767
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
<em></em><em></em>
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Transparency_%28data_compression%29"></a>

</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Glitch"></a><a href="http://en.wikipedia.org/wiki/Buffer_underrun"></a><em></em>
</dd>

<dt></dt>
<dd>
<em></em>
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>

</dd>

</dl>

<h3 id="interDeviceTerms"></h3>

<p>
HAL
</p>

<dl>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Bluetooth_profile"></a><a href="http://en.wikipedia.org/wiki/Bluetooth_protocols"></a> <a href="http://en.wikipedia.org/wiki/Bluetooth_profile#Advanced_Audio_Distribution_Profile_.28A2DP.29">A2DP</a>  <a href="http://en.wikipedia.org/wiki/Bluetooth_protocols#Synchronous_connection-oriented_.28SCO.29_link">SCO</a> <a href="http://en.wikipedia.org/wiki/List_of_Bluetooth_profiles#Audio.2FVideo_Remote_Control_Profile_.28AVRCP.29">/ (AVRCP)</a>
</dd>

<dt>DisplayPort</dt>
<dd>
 (VESA)
</dd>

<dt></dt>
<dd>
<a href="https://en.wikipedia.org/wiki/Dongle"></a>
</dd>

<dt>HDMI</dt>
<dd>
 HDMID  MHL
</dd>

<dt>Intel HDA</dt>
<dd>
Intel <em></em><em></em> <a href="http://en.wikipedia.org/wiki/Intel_High_Definition_Audio">Intel </a>
</dd>

<dt></dt>
<dd>
<a href="https://en.wikipedia.org/wiki/Interface_(computing)"></a> USB  MIDI
</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Line_level"></a>
</dd>

<dt>MHL</dt>
<dd>
/ micro-USB
</dd>

<dt></dt>
<dd>

</dd>

<dt>SlimPort</dt>
<dd>
micro-USB  HDMI
</dd>

<dt>S/PDIF</dt>
<dd>
Sony/Philips  PCM  <a href="http://en.wikipedia.org/wiki/S/PDIF">S/PDIF</a>S/PDIF  <a href="https://en.wikipedia.org/wiki/AES3">AES3</a>
</dd>

<dt>Thunderbolt</dt>
<dd>
 USB  HDMI  <a href="http://en.wikipedia.org/wiki/Thunderbolt_%28interface%29">Thunderbolt</a>
</dd>

<dt>TOSLINK</dt>
<dd>
<a href="https://en.wikipedia.org/wiki/TOSLINK">TOSLINK</a>  S/PDIF <em></em></dd>

<dt>USB</dt>
<dd>
 <a href="http://en.wikipedia.org/wiki/USB">USB</a>
</dd>

</dl>

<h3 id="intraDeviceTerms"></h3>

<p>
HAL
</p>
<ul>
<li><a href="http://en.wikipedia.org/wiki/General-purpose_input/output">GPIO</a></li>
<li><a href="http://en.wikipedia.org/wiki/I%C2%B2C">IC</a></li>
<li><a href="http://en.wikipedia.org/wiki/I%C2%B2S">IS</a> SLIMbus </li>
<li><a href="http://en.wikipedia.org/wiki/McASP">McASP</a></li>
<li><a href="http://en.wikipedia.org/wiki/SLIMbus">SLIMbus</a></li>
<li><a href="http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus">SPI</a></li>
<li><a href="http://en.wikipedia.org/wiki/AC%2797">AC'97</a></li>
<li><a href="http://en.wikipedia.org/wiki/Intel_High_Definition_Audio">Intel HDA</a></li>
<li><a href="http://mipi.org/specifications/soundwire">SoundWire</a></li>
</ul>

<p>
 <a href="http://www.alsa-project.org/main/index.php/ASoC">ALSA  (ASoC)</a> <a href="https://www.kernel.org/doc/Documentation/sound/alsa/soc/DAI.txt"></a> (DAI)
</p>

<h3 id="signalTerms"></h3>

<p>

</p>

<dl>

<dt>ADC</dt>
<dd>
 ADC ADC <a href="http://en.wikipedia.org/wiki/Analog-to-digital_converter"></a>
</dd>

<dt>AP</dt>
<dd>

</dd>

<dt></dt>
<dd>
/ PCM  PCM <em></em><a href="http://en.wikipedia.org/wiki/Audio_codec"></a>
</dd>

<dt>DAC</dt>
<dd>
DAC <a href="http://en.wikipedia.org/wiki/Digital-to-analog_converter"></a>
</dd>

<dt>DSP</dt>
<dd>

</dd>

<dt>PDM</dt>
<dd>
 1s  0s <a href="http://en.wikipedia.org/wiki/Pulse-density_modulation"></a>
</dd>

<dt>PWM</dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Pulse-width_modulation"></a>
</dd>

<dt></dt>
<dd>
<a href="http://en.wikipedia.org/wiki/Transducer"></a>
</dd>

</dl>

<h3 id="srcTerms"></h3>
<p>

</p>

<dl>

<dt></dt>
<dd> &lt; </dd>

<dt></dt>
<dd>
 20 kHz 40 kHz 44.1 kHz  48 kHz  22.05 kHz  24 kHz<a href="http://en.wikipedia.org/wiki/Nyquist_frequency"></a><a href="http://en.wikipedia.org/wiki/Hearing_range"></a>
</dd>

<dt></dt>
<dd></dd>

<dt></dt>
<dd></dd>

<dt></dt>
<dd></dd>

<dt></dt>
<dd></dd>

<dt></dt>
<dd></dd>

<dt></dt>
<dd> &gt; </dd>

</dl>

<h2 id="androidSpecificTerms">Android </h2>

<p>
Android  Android  Android
</p>

<dl>

<dt>ALSA</dt>
<dd>
 Linux Linux  <a href="http://en.wikipedia.org/wiki/Advanced_Linux_Sound_Architecture">ALSA</a> Android ALSA  APItinyalsa<em></em>
</dd>

<dt></dt>
<dd>
 HAL  I/O
</dd>

<dt>AudioEffect</dt>
<dd>
 API  API  <a href="http://developer.android.com/reference/android/media/audiofx/AudioEffect.html">android.media.audiofxAudioEffect</a>
</dd>

<dt>AudioFlinger</dt>
<dd>
Android AudioFlinger  mediaserver <a href="http://en.wikipedia.org/wiki/Sound_server"></a>
</dd>

<dt></dt>
<dd>
 API <a href="http://developer.android.com/training/managing-audio/audio-focus.html"></a> <a href="http://developer.android.com/reference/android/media/AudioManager.html">android.media.AudioManager</a>
</dd>

<dt>AudioMixer</dt>
<dd>
AudioFlinger <a href="http://en.wikipedia.org/wiki/Audio_mixing_(recorded_music)"></a>
</dd>

<dt></dt>
<dd>
 I/O
</dd>

<dt>AudioRecord</dt>
<dd>
 API PCM  API  <a href="http://developer.android.com/reference/android/media/AudioRecord.html">android.media.AudioRecord</a>
</dd>

<dt>AudioResampler</dt>
<dd>
AudioFlinger <a href="src.html"></a>
</dd>

<dt></dt>
<dd>
<a href="http://developer.android.com/reference/android/media/MediaRecorder.AudioSource.html"></a> 21  API<a href="attributes.html"></a>
</dd>

<dt>AudioTrack</dt>
<dd>
 API PCM  API  <a href="http://developer.android.com/reference/android/media/AudioTrack.html">android.media.AudioTrack</a>
</dd>

<dt>audio_utils</dt>
<dd>
PCM WAV  I/O <a href="avoiding_pi.html#nonBlockingAlgorithms"> FIFO</a>  Android
</dd>

<dt></dt>
<dd>
AudioFlinger  mediaserver  MediaPlayer
</dd>

<dt>HAL</dt>
<dd>
HAL  Android  AudioFlinger  C  API C++ libaudio
</dd>

<dt>FastCapture</dt>
<dd>
AudioFlinger  fast track
</dd>

<dt>FastMixer</dt>
<dd>
AudioFlinger  fast track
</dd>

<dt>fast track</dt>
<dd>
 AudioTrack  AudioRecord
</dd>

<dt>MediaPlayer</dt>
<dd>
 AudioTrack  API
</dd>

<dt>media.log</dt>
<dd>
 AudioFlinger
</dd>

<dt>mediaserver</dt>
<dd>
Android  AudioFlinger
</dd>

<dt>NBAIO</dt>
<dd>
/AudioFlinger  NBAIO API NBAIO
</dd>

<dt></dt>
<dd>
AudioFlinger  AudioTrack  FastMixer
</dd>

<dt>OpenSL ES</dt>
<dd>
<a href="http://www.khronos.org/">Khronos </a> API API  9  Android  API <a href="http://www.khronos.org/opensles/">OpenSL ES 1.0.1</a>
</dd>

<dt></dt>
<dd>

</dd>

<dt>SoundPool</dt>
<dd>
 AudioTrack  API API  <a href="http://developer.android.com/reference/android/media/SoundPool.html">android.media.SoundPool</a>
</dd>

<dt>Stagefright</dt>
<dd>
<a href="/devices/media.html"></a>
</dd>

<dt>StateQueue</dt>
<dd>
AudioFlinger NBAIO  StateQueue
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
 <a href="http://developer.android.com/reference/android/media/AudioManager.html">android.media.AudioManager</a>
</dd>

<dt>tee sink</dt>
<dd>
<a href="debugging.html#teeSink"></a>
</dd>

<dt>tinyalsa</dt>
<dd>
ALSA  BSD  API HAL
</dd>

<dt>ToneGenerator</dt>
<dd>
 AudioTrack  API (DTMF) <a href="http://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling"></a> <a href="http://developer.android.com/reference/android/media/ToneGenerator.html">android.media.ToneGenerator</a>  API
</dd>

<dt></dt>
<dd>
 AudioTrack  AudioRecord API
</dd>

<dt></dt>
<dd>

</dd>

<dt></dt>
<dd>
<a href="http://developer.android.com/reference/android/media/AudioManager.html">android.media.AudioManager</a>  API
</dd>

</dl>

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