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In the early 1970s, Memorex Corp. started the advertising campaign "Is It Real, or Is It Memorex?" featuring Ella Fitzgerald singing a high note so purely that it shattered a crystal wine glass. The next scene in the ad showed another wine glass shattering when a recording of Ms. Fitzgerald's voice was played. The thrust of the ad was that the clarity of Memorex recording tapes was so good that Ms. Fitzgerald's voice could shatter the glass whether her voice was live or was from the playback of a recording. From the glass's perspective, both the live voice and the recorded voice were indistinguishable. Read More



