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Until the end of January, the Federal Communications Commission had opposed the proliferation of low-power FM radio stations. "Microradio," as it is sometimes called, has been an ongoing problem for the agency since inexpensive broadcasting gear became widely available several years ago. Primarily an urban phenomenon, microradio consists of individuals and small groups with a hodgepodge of equipment, who wedge themselves into unoccupied slots in the crowded FM band.

This series of articles is based on a paper presented at the 103rd Audio Engineering Society Convention, New York, September 1997. The preprint, "Loudspeakers: What Measurements Can Tell Us—And What They Can't Tell Us!," AES Preprint 4608, is available from the AES, 60 East 42nd Street, Room 2520, New York, NY 10165-0075. The AES internet site, www.aes.org, offers a secure transaction page for credit-card orders.

MP3 audio files have quickly become the dominant format for downloading music over the Internet, and have just as quickly raised the ire of music labels and artists looking to protect their musical assets. For example, a petition signed by nearly 400 European recording artists (including Mstislav Rostropovich and Barbara Hendricks) was handed to the European Parliament last Tuesday by French composer Jean-Michel Jarre to protest lax copyright protections exacerbated by digital technology. The petition states, in part, "We want to use new digital technologies like the Internet to create and to deliver our music, but we will only feel confident doing so if we know that the laws are there to stop our works falling victim to pirates."