Electronic music signal generator

DETAILED DESCRIPTION We claim: 1.
An electronic music signal generator which supplies music signals to an audio circuit under the control of a time dependent signal control circuit, including a clock circuit, through a melody memory containing a sequential sound signal program, with an amplitude memory arrangement for storing discrete digital amplitude values for a period of a complex wave having a fundamental wave and harmonic waves, which amplitude values can be read out at a selectable cycle frequency and after summing are conducted to a digital to analog converter, characterized in that in the amplitude memory arrangement along with one amplitude memory for an actual sound a second amplitude memory is provided having a memory content substantially corresponding to that of the first amplitude memory, in that the second amplitude memory during the reading out of the actual sound is read out by a cycle frequency corresponding to the cycle frequency used in the reading out of the previous actual sound, and in that a pulse length modulator is provided as the digital to analog converter.
2.
A music signal generator according to claim 1 characterized in that a third amplitude memory is provided in which a sequence of discrete digital amplitude values are stored which correspond to a multi-toned sound made up of different individual sounds.
3.
A music signal generator according to claim 1, further characterized in that a further amplitude memory is provided with a memory content generally corresponding to that of the first amplitude memory which further amplitude memory may be read out during the reading out of the first amplitude memory with a cycle frequency slightly changed with respect to that used in the reading out of the first amplitude memory.
4.
A music signal generator according to claim 1, characterized in that the second amplitude memory contains harmonic wave amplitude values, which are reduced with respect to those of the first amplitude memory.
5.
A music signal generator according to claim 4, further characterized in that the fundamental wave amplitude values are reduced