FFT
- To: mathgroup at smc.vnet.net
- Subject: [mg16322] FFT
- From: Pablo Yaggi <pyaggi at cvtci.com.ar>
- Date: Sun, 7 Mar 1999 01:05:45 -0500
- Organization: http://extra.newsguy.com
- Sender: owner-wri-mathgroup at wolfram.com
Pablo Yaggi wrote: Hi, anybody knews How does a high frecuency FFT spectrum analyzer works? Because, let me know if I'm wrong, If you increase sampling frecuency you decrease resolution for a given size of array, and if you increment the array size to get for example 1hz resolution you need 1second to get the samples. A way to get resolution without loosing resolution is truncation of time domain samples? I mean for example : get 4096 samples at 44100 samp. rate, and get into the fft with a 8192 packet padded with 0's. Well, if anyone can help me ... Pablo That was my first message that for any extrange reason I can't see it on the group ..., but I know now that padding with 0's increase the resolution, but just on representing data and not on computing, it's just the same. So how can I get more resolution? for example in an audio samples array. Pablo.