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Starting over

点击量:   时间:2019-03-06 08:01:03

Record producers were appalled last week when they found they could hear a supposedly inaudible “watermark” designed to make DVD-Audio players reject copied discs. The industry’s Secure Digital Music Initiative (SDMI) had chosen a commercial watermarking system, called Verance, which adds digital changes to music waveforms. The mark must be robust enough to survive MP3 transmission over the Internet, but remain inaudible when played on the yet to be launched DVD-Audio players. After the disastrous London demo, an SDMI spokesperson admitted: