Casio RZ-1
Encyclopedia
The Casio RZ-1 was a drum machine
Drum machine
A drum machine is an electronic musical instrument designed to imitate the sound of drums or other percussion instruments. They are used in a variety of musical genres, not just purely electronic music...

 manufactured and released by Casio
Casio
is a multinational electronic devices manufacturing company founded in 1946, with its headquarters in Shibuya, Tokyo, Japan. Casio is best known for its electronic products, such as calculators, audio equipment, PDAs, cameras, musical instruments, and watches...

 in 1986. It was one of the first drum machines to allow the user to sample their own sounds, augmenting the unit's built-in sounds.

Either four samples of 0.2 seconds each, or one sample of 0.8 seconds, could be recorded and used. The sampling frequency was 20 kHz, which resulted in a playback bandwidth of around 10 kHz. The sampled sounds could not be edited in any way. This was unfortunate because the user recorded sounds had a tiny portion of silence before their start, causing them to sound very slightly delayed in playback compared to the machine's built-in sounds. The only adjustable parameter provided for the samples was a simple low pass filter.

The RZ-1 had a built-in mixer section allowing adjustment of the mix heard through the stereo outputs. In addition to the stereo mix output, the RZ-1 had ten separate outputs for feeding the individual sounds into an external mixer. The unit also featured a backlit LCD and MIDI in/out/thru sockets. The internal memory held 100 patterns and 20 songs, which could be copied to cassette tape using an unorthodox socket labeled MT (Music Tape - not be confused with a MIDI Thru socket).

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