{"wikiid":24913,"langid":"en","namespace":"CATEGORY","title":"Sound Card","revisionid":1171980,"contents_raw":"== Background and Identification ==\n\nA sound card is a piece of hardware which allows you to input and output audio signals from your computer. Sound cards were originally developed to facilitate better audio on early computers. In terms of sound, many early machines were limited to simple beeps and boops ([https:\/\/www.youtube.com\/watch?v=WKRL3ZMqB6M|here\u2019s a clip] of the square waves in the Castlevania soundtrack). Outputting audio via the so-called \u201cbeeper speaker\u201d also commonly required the processor to divert some of its precious clock cycles for audio instead of other tasks. The solution was to make sound cards with separate circuits that could be plugged into an [https:\/\/en.wikipedia.org\/wiki\/Expansion_card|expansion port] on the motherboard such as an [https:\/\/en.wikipedia.org\/wiki\/Industry_Standard_Architecture|ISA slot].\n\nNotable early sound cards included the [https:\/\/en.wikipedia.org\/wiki\/Ad_Lib,_Inc.#AdLib_Music_Synthesizer_Card_(1987)|AdLib Music Synthesizer] and its competitor, the [https:\/\/en.wikipedia.org\/wiki\/Sound_Blaster|Creative Labs Sound Blaster]. Newer sound cards use the [https:\/\/en.wikipedia.org\/wiki\/Peripheral_Component_Interconnect|PCI] or [https:\/\/en.wikipedia.org\/wiki\/PCI_Express|PCIe] interface to connect to a computer, but they accomplish a similar goal of allowing for high-quality audio input and output. Sound cards use a [https:\/\/en.wikipedia.org\/wiki\/Digital-to-analog_converter|digital-to-analog converter] (DAC) to generate analog audio for speakers and headphones from the digital signals provided by the computer. In the reverse process, some sound cards include an [https:\/\/en.wikipedia.org\/wiki\/Analog-to-digital_converter|analog-to-digital converter] (ADC) which takes an analog signal and sends the computer the digital equivalent so you can record your beautiful voice or your shred guitar solo.\n\nOf course, many modern computers like laptops don\u2019t have expansion ports, so sound cards are increasingly used as an external device that work via a connection like USB or FireWire. In this case, the sound card is housed in a case and sometimes requires an external power source. External sound cards are most commonly used by people seeking extra high-quality audio or people who need more power for [https:\/\/www.techradar.com\/news\/audio\/should-you-get-amped-up-about-high-impedance-headphones-1324034|high-impedance headphones].\n\n== Additional Information ==\n\n[https:\/\/en.wikipedia.org\/wiki\/Sound_card|Sound card on Wikipedia]\n\n[https:\/\/computer.howstuffworks.com\/sound-card.htm|How Sound Cards Work by HowStuffWorks]\n\n[https:\/\/en.wikipedia.org\/wiki\/Expansion_card|Expansion card on Wikipedia]\n\n[https:\/\/www.youtube.com\/watch?v=SFBvvlebSmw|Do You Need a Sound Card? by NCIX Tech Tips]","contents_json":{"type":"doc","content":[{"type":"heading","attrs":{"level":2},"content":[{"type":"text","text":"Background and Identification"}]},{"type":"paragraph","content":[{"type":"text","text":"A sound card is a piece of hardware which allows you to input and output audio signals from your computer. Sound cards were originally developed to facilitate better audio on early computers. In terms of sound, many early machines were limited to simple beeps and boops ("},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/www.youtube.com\/watch?v=WKRL3ZMqB6M","target":false}}],"text":"here\u2019s a clip"},{"type":"text","text":" of the square waves in the Castlevania soundtrack). Outputting audio via the so-called \u201cbeeper speaker\u201d also commonly required the processor to divert some of its precious clock cycles for audio instead of other tasks. The solution was to make sound cards with separate circuits that could be plugged into an "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Expansion_card","target":false}}],"text":"expansion port"},{"type":"text","text":" on the motherboard such as an "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Industry_Standard_Architecture","target":false}}],"text":"ISA slot"},{"type":"text","text":"."}]},{"type":"paragraph","content":[{"type":"text","text":"Notable early sound cards included the "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Ad_Lib,_Inc.#AdLib_Music_Synthesizer_Card_(1987)","target":false}}],"text":"AdLib Music Synthesizer"},{"type":"text","text":" and its competitor, the "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Sound_Blaster","target":false}}],"text":"Creative Labs Sound Blaster"},{"type":"text","text":". Newer sound cards use the "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Peripheral_Component_Interconnect","target":false}}],"text":"PCI"},{"type":"text","text":" or "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/PCI_Express","target":false}}],"text":"PCIe"},{"type":"text","text":" interface to connect to a computer, but they accomplish a similar goal of allowing for high-quality audio input and output. Sound cards use a "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Digital-to-analog_converter","target":false}}],"text":"digital-to-analog converter"},{"type":"text","text":" (DAC) to generate analog audio for speakers and headphones from the digital signals provided by the computer. In the reverse process, some sound cards include an "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Analog-to-digital_converter","target":false}}],"text":"analog-to-digital converter"},{"type":"text","text":" (ADC) which takes an analog signal and sends the computer the digital equivalent so you can record your beautiful voice or your shred guitar solo."}]},{"type":"paragraph","content":[{"type":"text","text":"Of course, many modern computers like laptops don\u2019t have expansion ports, so sound cards are increasingly used as an external device that work via a connection like USB or FireWire. In this case, the sound card is housed in a case and sometimes requires an external power source. External sound cards are most commonly used by people seeking extra high-quality audio or people who need more power for "},{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/www.techradar.com\/news\/audio\/should-you-get-amped-up-about-high-impedance-headphones-1324034","target":false}}],"text":"high-impedance headphones"},{"type":"text","text":"."}]},{"type":"heading","attrs":{"level":2},"content":[{"type":"text","text":"Additional Information"}]},{"type":"paragraph","content":[{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Sound_card","target":false}}],"text":"Sound card on Wikipedia"}]},{"type":"paragraph","content":[{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/computer.howstuffworks.com\/sound-card.htm","target":false}}],"text":"How Sound Cards Work by HowStuffWorks"}]},{"type":"paragraph","content":[{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/en.wikipedia.org\/wiki\/Expansion_card","target":false}}],"text":"Expansion card on Wikipedia"}]},{"type":"paragraph","content":[{"type":"text","marks":[{"type":"link","attrs":{"href":"https:\/\/www.youtube.com\/watch?v=SFBvvlebSmw","target":false}}],"text":"Do You Need a Sound Card? by NCIX Tech Tips"}]}]},"contents_rendered":"<div class=\"clearer\"><\/div><div class=\"headerContainer\"><a class=\"selfLink\" href=\"#Section_Background_and_Identification\" title=\"Link to this section\" aria-hidden=\"true\" tabindex=\"-1\"><span    class=\"fa-svg-icon\"><svg width=\"16\" height=\"16\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\" overflow=\"visible\"><!--! Font Awesome Pro 7.3.1 by @fontawesome - https:\/\/fontawesome.com License - https:\/\/fontawesome.com\/license (Commercial License) Copyright 2026 Fonticons, Inc. --><path d=\"M427.5 88c-21.4 0-42.2 6.9-59.3 19.4-11.4-11.7-24.4-22.1-38.4-30.7 27-23.6 61.7-36.7 97.7-36.7 82 0 148.5 66.5 148.5 148.5 0 39.4-15.6 77.1-43.5 105l-79.1 79.1c-27.8 27.8-65.6 43.5-105 43.5-82 0-148.5-66.5-148.5-148.5 0-17.9 3.2-35.5 9.4-51.9 4.6-12.4 18.5-18.7 30.9-14.1S259 220 254.4 232.4c-4.2 11.1-6.4 23-6.4 35.2 0 55.5 45 100.5 100.5 100.5 26.6 0 52.2-10.6 71-29.4l79.1-79.1C517.4 240.6 528 215.1 528 188.5 528 133 483 88 427.5 88zm-200 56c-26.6 0-52.2 10.6-71 29.4L77.4 252.5c-18.8 18.8-29.4 44.4-29.4 71 0 55.5 45 100.5 100.5 100.5 21.4 0 42.2-6.9 59.3-19.4 11.4 11.8 24.4 22.1 38.4 30.7-27 23.6-61.7 36.7-97.7 36.7-82 0-148.5-66.5-148.5-148.5 0-39.4 15.6-77.1 43.5-105l79.1-79.1c27.8-27.8 65.6-43.5 105-43.5 82 0 148.5 66.5 148.5 148.5 0 17.9-3.2 35.5-9.4 51.9-4.6 12.4-18.5 18.7-30.9 14.1S317 292 321.6 279.6c4.2-11.1 6.4-23 6.4-35.1 0-55.5-45-100.5-100.5-100.5z\"\/><\/svg><\/span><\/a><h2 id=\"Section_Background_and_Identification\" class=\"header\">Background and Identification<\/h2><\/div>\n\n<p>A sound card is a piece of hardware which allows you to input and output audio signals from your computer. Sound cards were originally developed to facilitate better audio on early computers. In terms of sound, many early machines were limited to simple beeps and boops (<a href=\"https:\/\/www.youtube.com\/watch?v=WKRL3ZMqB6M\">here\u2019s a clip<\/a> of the square waves in the Castlevania soundtrack). Outputting audio via the so-called \u201cbeeper speaker\u201d also commonly required the processor to divert some of its precious clock cycles for audio instead of other tasks. The solution was to make sound cards with separate circuits that could be plugged into an <a href=\"https:\/\/en.wikipedia.org\/wiki\/Expansion_card\">expansion port<\/a> on the motherboard such as an <a href=\"https:\/\/en.wikipedia.org\/wiki\/Industry_Standard_Architecture\">ISA slot<\/a>.<\/p>\n\n<p>Notable early sound cards included the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ad_Lib,_Inc.#AdLib_Music_Synthesizer_Card_(1987)\">AdLib Music Synthesizer<\/a> and its competitor, the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sound_Blaster\">Creative Labs Sound Blaster<\/a>. Newer sound cards use the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Peripheral_Component_Interconnect\">PCI<\/a> or <a href=\"https:\/\/en.wikipedia.org\/wiki\/PCI_Express\">PCIe<\/a> interface to connect to a computer, but they accomplish a similar goal of allowing for high-quality audio input and output. Sound cards use a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Digital-to-analog_converter\">digital-to-analog converter<\/a> (DAC) to generate analog audio for speakers and headphones from the digital signals provided by the computer. In the reverse process, some sound cards include an <a href=\"https:\/\/en.wikipedia.org\/wiki\/Analog-to-digital_converter\">analog-to-digital converter<\/a> (ADC) which takes an analog signal and sends the computer the digital equivalent so you can record your beautiful voice or your shred guitar solo.<\/p>\n\n<p>Of course, many modern computers like laptops don\u2019t have expansion ports, so sound cards are increasingly used as an external device that work via a connection like USB or FireWire. In this case, the sound card is housed in a case and sometimes requires an external power source. External sound cards are most commonly used by people seeking extra high-quality audio or people who need more power for <a href=\"https:\/\/www.techradar.com\/news\/audio\/should-you-get-amped-up-about-high-impedance-headphones-1324034\" rel=\"nofollow noopener noreferrer\">high-impedance headphones<\/a>.<\/p>\n\n<div class=\"clearer\"><\/div><div class=\"headerContainer\"><a class=\"selfLink\" href=\"#Section_Additional_Information\" title=\"Link to this section\" aria-hidden=\"true\" tabindex=\"-1\"><span    class=\"fa-svg-icon\"><svg width=\"16\" height=\"16\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\" overflow=\"visible\"><!--! Font Awesome Pro 7.3.1 by @fontawesome - https:\/\/fontawesome.com License - https:\/\/fontawesome.com\/license (Commercial License) Copyright 2026 Fonticons, Inc. --><path d=\"M427.5 88c-21.4 0-42.2 6.9-59.3 19.4-11.4-11.7-24.4-22.1-38.4-30.7 27-23.6 61.7-36.7 97.7-36.7 82 0 148.5 66.5 148.5 148.5 0 39.4-15.6 77.1-43.5 105l-79.1 79.1c-27.8 27.8-65.6 43.5-105 43.5-82 0-148.5-66.5-148.5-148.5 0-17.9 3.2-35.5 9.4-51.9 4.6-12.4 18.5-18.7 30.9-14.1S259 220 254.4 232.4c-4.2 11.1-6.4 23-6.4 35.2 0 55.5 45 100.5 100.5 100.5 26.6 0 52.2-10.6 71-29.4l79.1-79.1C517.4 240.6 528 215.1 528 188.5 528 133 483 88 427.5 88zm-200 56c-26.6 0-52.2 10.6-71 29.4L77.4 252.5c-18.8 18.8-29.4 44.4-29.4 71 0 55.5 45 100.5 100.5 100.5 21.4 0 42.2-6.9 59.3-19.4 11.4 11.8 24.4 22.1 38.4 30.7-27 23.6-61.7 36.7-97.7 36.7-82 0-148.5-66.5-148.5-148.5 0-39.4 15.6-77.1 43.5-105l79.1-79.1c27.8-27.8 65.6-43.5 105-43.5 82 0 148.5 66.5 148.5 148.5 0 17.9-3.2 35.5-9.4 51.9-4.6 12.4-18.5 18.7-30.9 14.1S317 292 321.6 279.6c4.2-11.1 6.4-23 6.4-35.1 0-55.5-45-100.5-100.5-100.5z\"\/><\/svg><\/span><\/a><h2 id=\"Section_Additional_Information\" class=\"header\">Additional Information<\/h2><\/div>\n\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Sound_card\">Sound card on Wikipedia<\/a><\/p>\n\n<p><a href=\"https:\/\/computer.howstuffworks.com\/sound-card.htm\" rel=\"nofollow noopener noreferrer\">How Sound Cards Work by HowStuffWorks<\/a><\/p>\n\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Expansion_card\">Expansion card on Wikipedia<\/a><\/p>\n\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=SFBvvlebSmw\">Do You Need a Sound Card? by NCIX Tech Tips<\/a><\/p>","linked_wikis":[],"can_edit":true,"available_langids":["en","de","es","fr","it","jp","ko","nl","pt","ru","tr","zh"],"ancestors":[{"dataType":"wiki","wikiid":522345,"langid":"en","title":"Other Computer Hardware","display_title":"Other Computer Hardware","namespace":"CATEGORY","summary":"Repair information and disassembly guides for miscellaneous computer hardware devices.","url":"https:\/\/www.ifixit.com\/Device\/Other_Computer_Hardware","text":"Repair information and disassembly guides for miscellaneous computer hardware devices.","image":{"mini":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.mini","thumbnail":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.thumbnail","standard":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.standard","medium":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.medium"},"modified_date":1785582032,"author":4026158},{"dataType":"wiki","wikiid":1417,"langid":"en","title":"Computer Hardware","display_title":"Computer Hardware","namespace":"CATEGORY","summary":"Repair guides for computer components, peripherals, and accessories.","url":"https:\/\/www.ifixit.com\/Device\/Computer_Hardware","text":"Repair guides for computer components, peripherals, and accessories.","image":{"id":3076703,"guid":"QDWYeD6JShBQeNxA","mini":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.mini","thumbnail":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.thumbnail","140x105":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.140x105","200x150":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.200x150","standard":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.standard","440x330":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.440x330","medium":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.medium","large":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.large","huge":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.huge","original":"https:\/\/guide-images.cdn.ifixit.com\/igi\/QDWYeD6JShBQeNxA.full"},"modified_date":1792694761,"author":225663},{"dataType":"wiki","wikiid":11000,"langid":"en","title":"Root","display_title":"Root","namespace":"CATEGORY","summary":"","url":"https:\/\/www.ifixit.com\/Device\/Root","text":"Repair guides, manuals, and troubleshooting help for Root. 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