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Hello all, I'm using the C5402 DSK. When I run the codec program (example), I tried to get the output graph for the time/frequency. Although the output to the speaker is correct, I got weird signal on the graph.( I did't use the probe point since the probe point will kill the output.) Have you guys ever met with the same problem? Do you have any sugggestion for me? Is there any way to display the graph for the output in this codec program? Thanks a lot! Lily |
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Graph display for the C5402 DSK
Started by ●June 5, 2002
Reply by ●June 6, 20022002-06-06
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Hello friends, I'm now into another university project, topic of which is under speech recognition. We will be using the c5402 dsk. The first step in the real-time recognition is frame blocking which is just dividing the speech into frames of the same number of samples each. Each frame overlaps adjacent frames over some number of samples. my question now is how can i obtain, in an efficient manner, a frame (or buffer) of samples? I have read the codec header file and found the following functions to be of probable use: codec_read() - the data array & its size are specified codec_cont_capture() - the data array, its size, pointer to function after the capture is completed, and the status of the read are specified However, no example codes for these functions can be found. After reading the Vol. 1 manual, the use of the ABU (autobuffering unit) seems attractive.But again, no sample code could be found for this nice feature. the manual gave a clear procedure as to how to use it but i feel doing those from scratch will prove to be not a good idea. Im in the physics field and I think going into the details would just eat away some much needed time. But still i'm willing and happy to learn those engineering stuff. Am I on the right track? which way should I go? thanks, marlo __________________________________________________ |
