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AC'97 (Audio Codec '97; also MC'97 for Modem Codec '97) is an audio codec standard developed by Intel Architecture Labs and various codec manufacturers in 1997. The standard was used in motherboards , modems , and sound cards .
When paired with a capable codec, such as the AK4531 (pre-AC'97), the ES1370 supported the then-latest in 3D audio positioning through 4-speaker surround sound. The chip was also a PCI bus master device that was designed to provide high-speed access to system RAM and resources, for sample synthesis data and effect processing.
[1] During the development of Minecraft, Persson met Rosenfeld through indie game development forum TIGSource, and the two became friends. [4] When Persson showed the game to Rosenfeld, he requested that he become the game's sound designer. Rosenfeld accepted, and began work on the game's sound effects and music. [5] [1]
A PCI Yamaha XG sound card with a YMF724E-V chipset. Another Yamaha XG sound card with YMF724E-V chipset. The last model number for controller chips used on ISA bus cards is 719; chips used on PCI cards start at 720 and higher. Chips for PCI bus standalone adapters are marked YMF7x4, while on-board or embedded systems are marked YMF7x0.
The term sound effect dates back to the early days of radio. In its Year Book 1931 the BBC published a major article about "The Use of Sound Effects". It considers sound effects deeply linked with broadcasting and states: "It would be a great mistake to think of them as analogous to punctuation marks and accents in print.
Avance Logic was acquired by Realtek as early as 1995 and was an independent subsidiary until the end of 2002, when the company was integrated into Realtek. Realtek's Audio Solutions are based on Avance Logic technology, which can also be recognized by the prefixes "ALG" (Avance Logic Graphics) and "ALS" (Avance Logic Sound). [5]
For a sound card, VirtualBox virtualizes Intel HD Audio, Intel ICH AC'97, and SoundBlaster 16 devices. [40] A USB 1.1 controller is emulated, so that any USB devices attached to the host can be seen in the guest.
To avoid this, some motherboards allow choosing between HDA and AC'97 front panels in the BIOS. Even though the actual audio hardware is HD Audio, the BIOS can be manipulated to allow the use of an AC'97 front panel. Likewise, some modern enclosures have both an "AC'97" and an "HDA" plug at the end of the front-panel audio cable. [citation needed]