Unverified50% confidenceSolutionExact time
对矩形窗口直接执行FFT会引入频谱泄漏，需使用窗函数（如Hanning窗）缓解
1
Sources
50%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
CutWire Prism：免费开源节点式实时视频混合器详解
Related Claims
UnverifiedFor real-valued inputs, real FFT (rFFT) can be used, which exploits the conjugate symmetry of the spectrum of real signals to compute and store only half of the spectral coefficients, reducing computation and memory requirements by nearly half.63% similarUnverifiedFWHT与FFT都属于广义快速正交变换家族，但FFT处理复数域DFT矩阵需要复数乘法，而FWHT处理仅含±1的实数哈达玛矩阵不需要乘法60% similarUnverifiedJIT 模式支持任意值（如 w-[137px]）和变体堆叠（如 hover:dark:md:bg-red-500）等 AOT 模式难以实现的特性56% similarUnverifiedSFT（监督微调）用人工标注的提示-回答对直接优化模型输出分布，InstructGPT、Alpaca等早期指令微调工作均以SFT为核心56% similarUnverifiedKaldi框架以WFST为核心52% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/503017API
curl https://kongchang.com/api/v1/knowledge/claims/503017MCP
get_claim(id=503017)