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Discussion Groups
Discussion Groups | TMS320C54x | spectrum analyzer
Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).
spectrum analyzer - Farayi Zinatsa - Apr 26 10:37:00 2005
hie
i'm developing a spectrum analyser on a tms320c5x using the fft
algorithim.now i'm trying to analyse a frequecy range of around 4khz
thats about 8khz of sampling rate for speech.
i want to get data from say a microphone (the chip has an RCA jack
for "mikes")into memory space for processing by the fft codewhich i
made (digital stage) and then output it to an oscilloscope in analogue
form.
question 1
how can i poissbly do it ?
i know that # of samples,N = T * Fs
were T = sampling period
Fs = sampling frequency
question 2
what duration of sampling period T do i need in order to get good
results and how is this done on the processor? i mean do i have to do
it in code (initialisation)or else?
pliz help u may not be familiar with the c5x but u can tell me how one
can generally do this, HAVING THE FFT and of course the sampling period
problem.
regards
farayi
(You need to be a member of c54x -- send a blank email to c54x-subscribe@yahoogroups.com )
spectrum analyzer - Farayi Zinatsa - Apr 26 10:38:00 2005
hie
i'm developing a spectrum analyser on a tms320c5x using the fft
algorithim.now i'm trying to analyse a frequecy range of around 4khz
thats about 8khz of sampling rate for speech.
i want to get data from say a microphone (the chip has an RCA jack
for "mikes")into memory space for processing by the fft codewhich i
made (digital stage) and then output it to an oscilloscope in analogue
form.
question 1
how can i poissbly do it ?
i know that # of samples,N = T * Fs
were T = sampling period
Fs = sampling frequency
question 2
what duration of sampling period T do i need in order to get good
results and how is this done on the processor? i mean do i have to do
it in code (initialisation)or else?
pliz help u may not be familiar with the c5x but u can tell me how one
can generally do this, HAVING THE FFT and of course the sampling period
problem.
regards
farayi
(You need to be a member of c54x -- send a blank email to c54x-subscribe@yahoogroups.com )