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OT: Ariane 5 Launcher Failure

Started by Randy Yates in comp.dsp1 hour ago 84 replies

Folks, I've been in a LinkedIn discussion in which the following analysis an Ariane 5 failure is documented: ...

Folks, I've been in a LinkedIn discussion in which the following analysis an Ariane 5 failure is documented: http://sunnyday.mit.edu/accidents/Ariane5accidentreport.html I'm just reposting it here since I find it fascinating, and I bet there are a few folks here (Tim, you come to mind especially) who might have a few things to say about it. I find it almost laughable (if it weren'...


Requirements for filters external for electronics modules

Started by Frank Wirsing in comp.dsp7 hours ago 1 reply

If one is measuring low-frequency seismic signals from an accelerometer and the accelerometer is feed to a vibration monitoring module, such as...

If one is measuring low-frequency seismic signals from an accelerometer and the accelerometer is feed to a vibration monitoring module, such as an Allen-Bradley XM-121 LF, or equivalent, manufactured prior to 2012, should one use an analog filter external to the module, or is the module's low-pass filters, which are selected in the software setup, adequate? The frequency range of interest is 1...


relationship between wordlength and saturation limit/bound

Started by iarif in comp.dsp7 hours ago 7 replies

Hi all, as you know, saturation arithmetic can be employed to avoid overflow oscillations in discrete time systems. I want to know that if we have...

Hi all, as you know, saturation arithmetic can be employed to avoid overflow oscillations in discrete time systems. I want to know that if we have calculated the saturation limit, how can the word-length (number of bits) be calculated from this information? Is there any specific relation? Waiting for your response Thanks --------------------------------------- Posted through http://www.DSPRe...


relationship between no of bits and roundoff error

Started by iarif in comp.dsp16 hours ago 1 reply

As it is clear that if we represent our number by large no of bits, roundoff error will decrease. Is there any specific relationship between no of...

As it is clear that if we represent our number by large no of bits, roundoff error will decrease. Is there any specific relationship between no of bits and roundoff error? waiting for your response Thanks --------------------------------------- Posted through http://www.DSPRelated.com


ADSP-21469

Started by stevenceuppens in comp.dsp21 hours ago

Hi all, I ordered a evaluation board of the ADSP-21469, which i want to use for learning & exploring sharc programming (Assembly, C, C++). I...

Hi all, I ordered a evaluation board of the ADSP-21469, which i want to use for learning & exploring sharc programming (Assembly, C, C++). I never used a sharc processor before, but i'm expierienced in programming ARM, STM32, ... What is the best way to learn sharc programming, and where can i find usefull help, tutorials etc... I already found lots of info on the analog devices website, but...


TNETV3020FIECTZ - TMS320TCI6486ECTZ - TI Tomahawk DSP

Started by Tiffanie Crocker in comp.dsp21 hours ago 1 reply

I currently have 1700 pieces of TI DSP TNETV3020 - aka TMS320TCI6486ECTZ for sale. My customers project 'went away' and they still have 1700...

I currently have 1700 pieces of TI DSP TNETV3020 - aka TMS320TCI6486ECTZ for sale. My customers project 'went away' and they still have 1700 pieces of this TI DSP! Please let me know if you are interested or using this device, or know any OEM's that would be interested in a cost savings opportunity!! My goal is to help customers mitigate excess inventory, and to help my


Analog error correction codes

Started by Anonymous in comp.dsp1 day ago 9 replies

There are 2 versions of analog error correction codes that I found. One is from the biological sciences:...

There are 2 versions of analog error correction codes that I found. One is from the biological sciences: https://clm.utexas.edu/fietelab/Papers/nn.2901.pdf It uses simple mapping onto phase space to do error correction. The second uses chaos theory to expand the state space: http://arxiv.org/abs/1105.1561 Neither of them give a really clear description of the decoding a


CfP EvoMUSART2016

Started by EvoMUSART in comp.dsp2 days ago

---------------------------------------------------------------------------- Please distribute (Apologies for cross...

---------------------------------------------------------------------------- Please distribute (Apologies for cross posting) ---------------------------------------------------------------------------- CALL FOR PAPERS EvoMUSART 2016 http://www.evostar.org/2016/cfp_evomusart.php 5th International Conference on Evolutionary and Biologically Inspired Music, Sound, Art and Design


How to convert from PDM to PCM ?

Started by Mauritz Jameson in comp.dsp2 days ago 5 replies

I have a client who is using a MEMS microphone (SPM1423HM4H-B, 3.125MSPS). The output of the microphone is a PDM...

I have a client who is using a MEMS microphone (SPM1423HM4H-B, 3.125MSPS). The output of the microphone is a PDM signal. Datasheet: http://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPM1423HM4H-B.pdf In the client's test setup an emitter emits an acoustic signal. The emitted signal has frequency components around 40kHz. When I reviewed the client's setup, I noticed a c...


Wireless communication and frequency band

Started by Sharan123 in comp.dsp3 days ago 10 replies

Hello, I have a question pertaining to the frequency bands of carriers in wireless communication. So, when a two systems use two carriers of...

Hello, I have a question pertaining to the frequency bands of carriers in wireless communication. So, when a two systems use two carriers of two different frequencies, say 2.5 GHz and 5 GHz then I would expect that overall communication in system using 5 GHz would be faster as compared to system using 2.5 GHz. Of course, how fast is this would depend on where the bottleneck is in terms of co...


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