This is the output for my fyp, sigma delta modulator. Generally, the noise shaping is working; notice how the low frequency components have lower noise compared to the higher frequency ones. This is because the low frequency noise has been "shifted" to the higher frequency part so that the signal of interest, which is in the lower frequency domain, is not affected by noise.
However, the result is far from expectation. 80dB of SNR is a far cry from the desired 120+dB that is required of a 20-bits sigma delta modulator. Sad. Sibeh sian. =((
And most people reading this dunno what i talking about. Also sibeh sian. No one can help me..
(Link)
Among news like a monk and an infidel GP doctor making six-figure income, there’s an interesting piece in ST two days ago - ex-top civil servant Ngiam Tong Dow worries that Singapore is becoming “high cost, low tech”.
“The United States has overtaken Britain because while some of their best went to Wall Street, their best still go into engineering.”
His concern is valid.
In Singapore, the best JC students are attracted by glitzy ads and employment survey reports (see example) glamorizing the banking and finance industry and repeatedly highlighting that top dollars are made there.
For engineers and techies, they only get to hear things like “with a basic degree, you get to wash test tubes”.
Or that engineering and tech talent are a dime a dozen from China and India.
It is no wonder that students die to get into the in-demand courses like business, finance and accounting, while engineering and technology-related courses are dumping grounds.
See my previous posts on getting out of engineering and dead end career.
We all know that techies are undervalued in sunny Singapore. You’re a techie, you make 5k and be happy. Stay happy. Else get out and go to countries like USA, Japan, or even China and Taiwan where tech talent are much more highly valued than over here. Or, get into banking or do a sales job.
So Mr Ngiam worries about the lack of local high-tech talent.
There’s always a simple solution (right?): Start paying top dollars for engineers.
Start with tech-related ministries and agencies like Mindef and MDA. Then, move to tech-related GLCs like Singapore Technologies and JTC.
Pay millions for, say, the Chief Innovator in DSTA and ask the media to cover this ad nauseum (much like the way life sciences were glamorized in the not too distant past).
Hopefully we get to confuse the students again.
Why wasn't I confused by glitzy ads and employment survey reports and took an interest in banking/financial sector instead back then? =((
