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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 the control of computer programs. The term sound card is also applied to external audio interfaces used for professional audio applications.
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Combined sound and graphics NMOS chip [16] SID (6581 / 8580) 1981 3 Commodore 64 and Commodore 128 computers, Elektron SidStation synthesizer sound module: NMOS chip (6581) / HMOS-II chip (8580) [17] [18] TED (7360 / 8360) 1983 2 Commodore 16, Commodore Plus/4: HMOS chip [19] Microchip Technology: AY8930: 1989 3 Covox Sound Master Card Oki ...
Control channels Controlled source Wave / PCM stereo: Audio signal generated by the CPU via the sound card's digital-to-analog converter. (This includes audio produced by games, MP3 or WAV players, but also some software playing a CD-DA through the CPU, such as, Windows Media Player or Media Player Classic, as well as TV tuner cards that use the CPU for decoding audio.)
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit resolution.
Audio signal processing is a subfield of signal processing that is concerned with the electronic manipulation of audio signals.Audio signals are electronic representations of sound waves—longitudinal waves which travel through air, consisting of compressions and rarefactions.
We can always encourage our athletes to sleep more. Have kids aged 6-to-12 get 9-to-12 hours per night and 13-to-18 get 8-to-10, the American Academy of Sleep Medicine says.
The IBM Music Feature Card (simply referred to as the IBM PC 'Music Feature' by IBM) and sometimes abbreviated as the IBM MFC, or just IMFC) is a professional-level [1] sound card for the PC, and used the 8-bit ISA bus. The card made use of the Yamaha YM2164 chip which produces sound and music via FM synthesis. [2]