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RealSound is a patented (US US5054086 A) technology for the PC created by Steve Witzel of Access Software during the late 1980s. [1] RealSound enables 6-bit [2] digitized pulse-code modulation (PCM)-audio playback on the PC speaker by means of pulse-width modulation (PWM) drive, allowing software control of the loud speaker's amplitude of displacement.
Computer speakers, or multimedia speakers, are speakers sold for use with computers, although usually capable of other audio uses, e.g. for an MP3 player. Most such speakers have an internal amplifier and consequently require a power source, which may be by a mains power supply often via an AC adapter , batteries, or a USB port.
Various audio export options (including 64-bit masters) were AIFF, AU, CAF, FLAC, RAW, SD2, W64 (Sony Wave64), and WAV . Starting with version 6, Sonar could take advantage of 64-bit internal processing, a 64-bit audio engine, and a 64-bit mixer on 64-bit versions of Windows Vista and Windows 7. Before the introduction of Sonar X2 in October ...
Unlike a speaker used with a sound card, the PC speaker is only meant to produce square waves to produce sounds such as beeping. Modern computers utilize a piezoelectric buzzer or a small speaker as the PC speaker. PC speakers are used during Power-on self-test to identify errors during the computer's boot process, without needing a video ...
Site for old PC without sound cards. Programming the PC Speaker, by Mark Feldman for PC-GPE. Programming the PC Speaker, by Phil Inch: part 1, part 2 (includes a very detailed explanation of how to play back PCM audio on the PC speaker, and why it works) Bleeper Music Maker A freeware to use the PC speaker to make music (superseded by BaWaMI ...
The MME API or the Windows Multimedia API (also known as WinMM) was the first universal and standardized Windows audio API. Wave sound events played in Windows (up to Windows XP) and MIDI I/O use MME. The devices listed in the Multimedia/Sounds and Audio control panel applet represent the MME API of the sound card driver.
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The need for a center speaker to locate screen-centered sounds has been recognized since the Bell Labs experiments in stereo sound from the 1930s, and multi-channel cinema sound systems, starting with the first commercial stereophonic film (Fantasia-1941) have always included one. Post-war stereo sound in theaters initially came from separate ...