sound card

sound card 

 a sound card also known as an audio card is an internal expansion card that provides input and output of audio signals to and from a computer under control of computer programs the term sound card is also applied to external audio interfaces used for professional audio applications typical uses of sound cards include providing the audio component for multimedia applications such as music composition editing video or audio presentation education and entertainment games and video projection sound functionality can also be integrated onto the motherboard using components similar to plug-in cards the integrated sound system is often still referred to as a sound card sound processing hardware is also present on modern video cards with me to output sound along with the video using that connector previously they used a stiff connection to the motherboard or sound card most sound cards use a digital to 

sound card 

analog converter DAC which converts recorded are generated digital data into an analog format the output signal is connected to an amplifier headphones or external device using standard interconnects such as a TRS phone connector or an RCA connector if the number and size of connectors is too large for the space on the backplate the connectors will be off board typically using a breakout box an auxiliary backplate or a panel mounted at the front more advanced cards usually include more than one sound chip to support higher data rates and multiple simultaneous functionality for example digital production of synthesized sounds usually for real-time generation of music and sound effects using minimal data and CPU time digital sound reproduction is you Julie done with multi-channel Dax which are capable of simultaneous and digital samples at different pitches and volumes and application of real-time effects such as filtering or deliberate distortion multi-channel digital sound playback can also be used for music synthesis when used with a compliance and even multiple channel emulation this approach has become common as manufacturers seek simpler and lower-cost sound cards most sound cards have aligned and connector for an input signal from a cassette tape or other sound source that has higher voltage levels than a microphone the sound card digitus is this signal that transfers the samples to the main memory from where a recording software may write it to the hard disk for storage editing or further processing another common external connector is the microphone connector for signals from a microphone or other low-level input device input through a microphone jack can be used for example by speech recognition or voice over IP applications