Sampling Rate for c5402 DSK

Started by Junhong in TMS320c54x18 years ago 1 reply

Hi, I encounter a problem with the changing the sampling rate of the onboard codec in C5402 DSK board. I try to set the...

Hi, I encounter a problem with the changing the sampling rate of the onboard codec in C5402 DSK board. I try to set the sampling frequency at 16Khz... but when I test it and found out that it cut off at 4Khz instead of 8Khz.... I try to change to other sampling ra


Minimum Sampling Frequency

Started by bilalaminch in TMS320c54x16 years ago

Hi Pals; I am looking for the most accurate PRATICAL method of calculating minimum sampling rate (fs(min)). If any guides me...

Hi Pals; I am looking for the most accurate PRATICAL method of calculating minimum sampling rate (fs(min)). If any guides me regarding this, it would be a great help. Regards Bilal


Sampling frequency

Started by Anonymous in TMS320c54x21 years ago

Dear Friends Could you tell me what is the maximum sampling frequency fro the c541 DSP? khmaies

Dear Friends Could you tell me what is the maximum sampling frequency fro the c541 DSP? khmaies


Sampling & Quantization

Started by ygb1492 in TMS320c54x18 years ago

Does anyone have an assembly or c program that can be used to show the effects of sampling and/or quantization for an input signal ...

Does anyone have an assembly or c program that can be used to show the effects of sampling and/or quantization for an input signal produced by a signal generagtor. Gerardo


Rerouting McBSP on the 5402

Started by garymfriedman in TMS320c54x18 years ago

Hi, I have a question about the McBSPs on the 5402. My problem is this. I have been given the 5402 to use for image ...

Hi, I have a question about the McBSPs on the 5402. My problem is this. I have been given the 5402 to use for image processing. I know the sampling rate of 16kHz is too slow however i don't have the liberty of buying a new board with a better sampling rate.


Sampling Frequency on AD/DC AC01

Started by Anonymous in TMS320c54x20 years ago

I am implementing a digital FIR filter but I want to know how to change the sampling frequency of the ACO1. Can somebody help me...

I am implementing a digital FIR filter but I want to know how to change the sampling frequency of the ACO1. Can somebody help me with this. I have read that you can change it on the init file of the AC01 but I do not know how. Thanks in advance. Any info would be appreciated.


microphone sampling w/ 5402 DSK & AD50

Started by Anonymous in TMS320c54x20 years ago 2 replies

I'm performing speech recognition with the 5402 DSK equipped with AD50 codecs. I need to know how to continuously sample from the ...

I'm performing speech recognition with the 5402 DSK equipped with AD50 codecs. I need to know how to continuously sample from the microphone port on the DSK. Could someone please provide sample code or help me out with the C functions necessary to perform this continuous sampling usi


sampling frequency

Started by Anonymous in TMS320c54x21 years ago

Dear friends we know that fs=f(MCLK)/2*TA*TB and fc=136.8k/TA we know also that 4<=TA<=31 2<=TB<=63 TA*TB must be integer,so if we take the minimum and maximum values of...

Dear friends we know that fs=f(MCLK)/2*TA*TB and fc=136.8k/TA we know also that 4<=TA<=31 2<=TB<=63 TA*TB must be integer,so if we take the minimum and maximum values of TA and TB we get at that time 2.654kHz<= fs<=648kHz from here we see that the


audio example execution problem

Started by Anonymous in TMS320c54x20 years ago

Thank you Motohiko, Emerson, and the other off-line response I got about my microphone sampling question posted previously. I've got...

Thank you Motohiko, Emerson, and the other off-line response I got about my microphone sampling question posted previously. I've got a new one for y'alls: Has anyone experienced difficulty running the audio example, not the codec or codec_eg example, including with CCS 1.11? A


Sampling 16bits with dsk baord !!

Started by Ben-Yair, Yossi in TMS320c54x20 years ago 2 replies

Does anyoune know how to confugure / initialize the codec TLC320AD50c on the dsk baord to sample at 16 bits ( not 15bits ) . ...

Does anyoune know how to confugure / initialize the codec TLC320AD50c on the dsk baord to sample at 16 bits ( not 15bits ) .


dsplib rifft: can't get it working

Started by lolo_mk1 in TMS320c54x16 years ago

Hi, I've read past posts on this topic but I can't make the dsplib inverse fft work properly. I put it in a 360Hz sine wave @ 8kHz...

Hi, I've read past posts on this topic but I can't make the dsplib inverse fft work properly. I put it in a 360Hz sine wave @ 8kHz sampling rate. I get the desired spike in the magnitude spectrum via cbrev(*in, *out, FFTORDER/2); rfft1024(*out, 1); //my little magnituding finding function goes here so I'm sure thats


fsk detection

Started by hemant ramdasi in TMS320c54x19 years ago 1 reply

hi all, It is slightly different. I want to detect the 500 and 700 hz fsk signals at 600 baud. I use 8 khz sampling rate...

hi all, It is slightly different. I want to detect the 500 and 700 hz fsk signals at 600 baud. I use 8 khz sampling rate and do all the things as a buffered approach. This means I use two 8 k buffers and I process recorded buffer in the mean time recording in


interrupt problem

Started by ajs_edwards_uk in TMS320c54x19 years ago

Hi, I posted a message a few weeks ago about this problem but I am still having trouble with a sampling routine being...

Hi, I posted a message a few weeks ago about this problem but I am still having trouble with a sampling routine being interrupted causing it to miss samples. My setup is: programmed in CCS, using the onboard codec to sample from the mic port, using RTDX to transfe


Audio Sampling Frequency

Started by Anonymous in TMS320c54x21 years ago

Hello all, I'm building an audio processing app, and would like to use DSP/BIOS for the i/o. I'm using CCS 1.2 with the '5402...

Hello all, I'm building an audio processing app, and would like to use DSP/BIOS for the i/o. I'm using CCS 1.2 with the '5402 DSK. Since I'm still new to this platform, I used the audio example in the bios subdirectory as a base for my host program. Trouble is tha


configuring codec so that fs=500Hz

Started by Marlo Flores in TMS320c54x19 years ago 3 replies

Hi friends, I program the c5402 in C language. I see in the codec example that the sampling rates i can configure the codec...

Hi friends, I program the c5402 in C language. I see in the codec example that the sampling rates i can configure the codec are only 2kHZ-16kHz using the available function. How can I make the codec to sample at 500 Hz? Is there some other C-callable function which I


RTDX problem

Started by ajs_edwards_uk in TMS320c54x19 years ago 1 reply

I am using DSP/BIOS with the RTDX LOG module to transfer debug messages. No stdio / breakpoints are in use. Presently the main...

I am using DSP/BIOS with the RTDX LOG module to transfer debug messages. No stdio / breakpoints are in use. Presently the main functionality of my program is to take 64 samples from the codec and perform an FFT. The problem is that part of the way into the sampling, something


Re: [Fwd: Re: code working on simulator but not on device?]

Started by Jeff Brower in TMS320c54x15 years ago

Megha- > I had one question. In functions like butter (for filters) we declare a variable Wn > (the cut off frequency). ex: [B,A] =...

Megha- > I had one question. In functions like butter (for filters) we declare a variable Wn > (the cut off frequency). ex: [B,A] = BUTTER(N,Wn). In this Wn value is between 0 > and 1, where 1 means half of sampling rate. What I am not understanding is where is > it getting sample rate value from. I saw some codes and in that the sample rate > value is not declared before using the command.


strange CPU error

Started by JimJ...@msn.com in TMS320c54x13 years ago

Hello to everyone, I have created a simple project that samples a sinus wave and then it calculates the FFT of the sampling data. I am using a...

Hello to everyone, I have created a simple project that samples a sinus wave and then it calculates the FFT of the sampling data. I am using a C54x card but what I describe happens in the simulation (I have not tested it in real mode with the card yet.) The program was working but I had forgotten to bit reverse the samples for the FFT. Whether I use the cbrev function (which by the way does...


Re: [Fwd: Re: code working on simulator but not on device?]

Started by megha daga in TMS320c54x15 years ago

Dear Jeff Thanks. Thight might help. i will read and follow that. I had one question. In functions like butter (for filters) we declare a...

Dear Jeff Thanks. Thight might help. i will read and follow that. I had one question. In functions like butter (for filters) we declare a variable Wn (the cut off frequency). ex: [B,A] = BUTTER(N,Wn). In this Wn value is between 0 and 1, where 1 means half of sampling rate. What I am not understanding is where is it getting sample rate value from. I saw some codes and in that the sample rate...


Sampling Problem

Started by Miles jackson in TMS320c54x20 years ago

hi i am receiving a signal of 2MHz and i want to give this signal to a DSP board ..but the problem is that if i dont want to...

hi i am receiving a signal of 2MHz and i want to give this signal to a DSP board ..but the problem is that if i dont want to loose the information than i hve to sample it at rate atleast twice the highest frequency ie 4Mhz .. But i the dsp A/D gives only 44.5khz .. Pls