| 摘要 |
PURPOSE:To allow the recording and reproducing of a source sound for an audio device, by applying a digital circuit and an electronic computer and at the same time adapting a carrier wave technology of the electronic communication. CONSTITUTION:A carrier wave technology of the electric communication is applied to give the pulse modulation and the code modulation to a melody, rhythm and an audio signal comprising of these melody and rhythm. These melody, rhythm and audio signal are recorded to various types of program sources such as a record, a magnetic tape, etc. Furthermore an automatic performance is carried out by means of audio device containing an electronic computer and a code decoding function. |
