Soundcard

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{{merge|Sound Cards: Introduction}}
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This article has been merged with [[Sound Cards: Introduction]]
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A Soundcard is a device which is attached to the computer and which is able to produce sound. In ALSA a soundcard can have several capabilities
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* It can be used as a pcm-playback/capture device (see [[pcm-device]])
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* It might have [[midi]] hardware
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* And it might have a [[ctl-device]] (a mixer).
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Different soundcards will have different hardware features.  A basic soundcard might have the I/O ports shown in the figure.  More sophisticated cards will support more channels, S/PDIF I/O, MIDI ports, or more analog speaker outputs for surround sound or woofers.
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[[Image:Soundcard.png]]
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In the figure:
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* Line In - analog input from external device
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* Mic In - low-level, mono microphone input
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* PCM playback - digital stream from software
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* Synthesizer - stream generated from wavetable
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* PCM Capture - digital stream output to software
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* Line Out - analog output to external device
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* Speaker - amplified analog output to external speakers
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[[Category:Glossary]]
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[[Category:Sound cards]]
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Latest revision as of 19:50, 14 March 2009

This article has been merged with Sound Cards: Introduction

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