SP-MIDI is a variation on the General MIDI format that was designed to allow composers the ability to deliver a single audio file that can playback across a wide range of MIDI-based mobile devices, each with different polyphonic limitations, and yet have the audio still sound appealing.". The first of these polyphonic phones will roll out in the second half of 2002. under the umbrella of the MIDI Manufacturers' Association (MMA) and its Japanese counterpart (AMEI.) Since its ratification by those societies it has been adopted by the global wireless standards body 3GPP as the MIDI standard for polyphonic ring tones and multimedia messaging. The Scalable Polyphony MIDI (SP-MIDI) specification was co-authored by Nokia Corporation and Beatnik Inc. Beatnik offers core audio engine technology, application programming interfaces (APIs) and tools that allow the development of audio-enabled applications, services and content delivery for the mobile world. Beatnik licensees and technology partners include top mobile manufacturers, hardware platform vendors, and operating system providers. " Beatnik is a leading provider of standards-based audio software solutions for wireless devices that enable an enhanced, interactive user experience for mobile handset consumers.
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