This week at LWN: Echoprint: Open acoustic fingerprinting
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Acoustic fingerprinting has been given a tremendous boost by the mobile smartphone business. You have probably seen the basic scenario in television commercials, if not in person: a user holds up a phone to capture a few seconds of audio playing nearby, and the application computes a "fingerprint" of the track, which is then used to query a remote database for the mystery artist and track name. The space has been dominated by proprietary software, but a new — and open source — project was unveiled last week, named Echoprint.
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