| 摘要 |
<p>A method for convolution of a digital input signal, wherein digital signals corresponding to an impulse response for at least an instance of a spatial environment are stored in a memory (16). Samples of the digital signal are continuously stored in an input buffer (14) and a set of samples, limited in time, of the digital input signal is delimited from continuously incoming samples. The digital signals of the impulse response are divided into a plurality of segments consisting of coefficients and convolution operations are repeatedly performed with a segment of the impulse response and the set of samples, limited in time, of the digital input signal until all segments of the impulse response have been processed. The convolution operations are performed by parallel multiplication of the coefficients of the impulse response and the set of samples, limited in time, of the digital input signal in a multiplier unit (12) and by repeated addition of the products in pairs forming partial results. Partial results are added to previously calculated associated partial results in an adder unit (13) forming an output signal sample.</p> |
