发明名称 |
SOUND SYNTHESIS WITH FIXED PARTITION SIZE CONVOLUTION OF AUDIO SIGNALS |
摘要 |
A method for convolving an input signal with an impulse response function partitioned into a plurality of time segments of equal size, the method including transforming a segment of an input signal into the frequency domain to generate a frequency spectrum of the segment; multiplying the frequency spectrum of the segment of the input signal with a frequency spectrum of each of the segments of the impulse response function; scaling the results from the multiplication of frequency spectra; accumulating the scaled results; and performing an inverse transform on the accumulated signals to generate a desired convolved signal in the time domain. The scaling includes performing a bitwise shift operation on the multiplication results, and performing the bitwise shift operation includes adding a bit to the multiplication results before the bitwise shift operation. Fast convolution of uniformly partitioned impulse response functions can be achieved using fixed-point arithmetic. |
申请公布号 |
WO2014197171(A2) |
申请公布日期 |
2014.12.11 |
申请号 |
WO2014US37700 |
申请日期 |
2014.05.12 |
申请人 |
SONY COMPUTER ENTERTAINMENT AMERICA LLC |
发明人 |
BETBEDER, LAURENT;QURESHI, SHEHRZAD |
分类号 |
G10L21/0232 |
主分类号 |
G10L21/0232 |
代理机构 |
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