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In prior years, when we rounded up phone systems, we thought it made sense to segregate "conventional" from "next-gen" products. Real-world buyers (and dealers, and interconnects, and consultants, and other […]

DVD-Audio exceeds the CD in sound quality, the number of channels, recording time and copyright protection, and it is expected as new audio media. We have developed an AV (audio and video) decoder LSI for both DVD-Audio [1] and DVD-Video standard. In this paper, we describe the architecture of the LSI, and the audio software algorithms for real-time decoding of high quality audio contents (192Hz 24bit stereo, 96kHz 24bit multi-channel, etc.) with still picture, and the improvement for the LSI (bitstream transfer control, the time-sharing of audio and video decoding and the optimization of audio processing for DVD-Audio).

The music industry has reacted fearfully to the emergence of companies like Napster, which publishes software that permits users to freely share libraries of MP3-formatted music files, and some industry observers have fueled anxieties by predicting the end of traditional music retailing. In spite of threats perceived by groups such as the Recording Industry Assn of America, however, record companies have not reported any declines in their profits. In May 2000, the music group Metallica filed a lawsuit against Napster, claiming copyright violations, but this could be interpreted as a counterproductive overreaction. In fact, MP3 files are not anywhere near CD quality and may represent less of a threat than had been thought.

There are several software systems that facilitate 'streaming audio' which allows Internet users to listen to an audio file before it is completely downloaded. RealAudio, which is used by almost 20,000 sites, is the most popular.

With AC '97, vendors are setting out to revamp audio subsystem design--and may expand the audio codec market in the process As the PC continues to evolve into the centerpiece […]

A computer program written in Turbo C++ provides PC-based microcomputers with audio processing functions such as chorus and flanging effects. An understanding of the principle that the response of a linear system to a steady-state sinusoidal input is itself a sinusoid at the same frequency as the input is important when developing various frequency-selective PC-based digital filters that generate reverberation, echo, phase flanging and all-pass effects.

After storming the home PC market, where media-rich entertainment and educational CD-ROM software titles abound, multimedia is making its way into business offices as well. Large corporations are using multimedia […]

While most of the talk in reference multimedia development centers around full-motion video, one should not overlook the impact audio has on teaching and learning. Multimedia is -multi' for two […]

Amtelco Product: XDS Type: Switch/conference matrix; analog line cards (DID, loopstart, ground start, station and E&M) Operating System: DOS; UNIX; OS/2 Voice Bus Connection: AEB; PEB; MVIP; soon SCSA Telephone […]

Multi-resource voice processing systems are hot items these days. That's mainly because the components used to build them, the PC boards and software, are getting better. Today's developers integrate voice […]

Back in my rebellious teen years, I discovered I could listen in on my parents' whispered discussions by running two wires from the woofer of their low-fi record player under […]

Desktop multimedia will get a boost this week with the introduction of sound products and a chip set that makes desktop Motion Picture Experts Group (MPEG) compression a reality. Microsoft […]

Every fall, the branches on the apple trees outside my window need pruning to make room for healthy spring blossoms and the following summer's growth. Likewise, I must remove winter's […]

Buying a used voice board is st like buying any other ece of equipment -- used or new. There are certain things you need to know and look for before […]