Electronic Musical Resources

Electronic Musical Resources: Patents : Processors

Speech and speech processing

Concerning nondigital devices for independently altering the duration and pitch of recorded signals, called by many names, including: Information Rate Changers, Time Stretcher/Compressors, Zeitdehner, and Pitch-and-Frequency changers.

From Anton Springer came the Springer Machine used in many european tape studios.

Concerning artificial reverberation

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