| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sound source device capable of preventing a sound output response from being degraded at the time of real time performance while avoiding sound break when an arithmetic load of a CPU is increased. <P>SOLUTION: Since a musical sound waveform Out is generated based on a waveform output W which is read through a first waveform buffer 102 small in buffer size in a low speed arithmetic cycle within a fixed period from key-on time, the sound output response is prevented from being degraded at the time or real time performance. As the musical sound waveform Out is generated based on the waveform output W which is read through a second waveform buffer 104 whose buffer size is large in a high speed arithmetic cycle until key-off time after the fixed period, the sound break is avoided when the arithmetic load of the CPU 10 is increased. As a result, the sound output response can be prevented from being degraded at the time of real time performance while avoiding the sound break caused when the arithmetic load of the CPU is increased. <P>COPYRIGHT: (C)2009,JPO&INPIT |
