| 摘要 |
PROBLEM TO BE SOLVED: To conduct primary data processing at a high speed while conducting audio signal processing with a DSP by not conducting address computations in a product sum arithmetic section. SOLUTION: An address generating circuit is provided for each of special processing such as waveform tracing in the DSP besides the product sum arithmetic section. For example, in the waveform tracing address generating circuit, a leading address that is set first is selected and outputted by a first address selecting circuit 232. Then, the address is sequentially increased by one at a time by a +1 incrementor 236 until an end address that is later set and outputted. When audio signals are data which include loop portions, a loop address set by a second address selecting circuit 238 is selected and the addresses from the above address to the end address are successively repeatedly outputted. |
