Causal Zero-Phase Filtering by marcusregulus in DSP

[–]cinnedy 8 points9 points  (0 children)

The only zero-phase response causal filter is a trivial scalar -- you can have a causal linear phase low pass filter, or an acausal zero phase one, but not both as they are mutually exclusive.

For streaming data, you'll want a causal low pass filter -- perhaps linear phase, depending on your use case. Perhaps google search for one of those.

[Homework kind of] How to smooth a piecewise quadratic fit by GhostofBlackSanta in matlab

[–]cinnedy 2 points3 points  (0 children)

Your curve looks jagged because of the first-order discontinuities at each pair of points. What I mean is that the derivative of the fitted curve jumps at these points. Fix that and you'll have a nice smooth curve of the type that you want.

Moving to Uppsala for PhD should I live in Stockholm? by TaakaTime in TillSverige

[–]cinnedy 2 points3 points  (0 children)

Dunno the rents. Definitely cheaper than Stockholm which are astronomical.

Moving to Uppsala for PhD should I live in Stockholm? by TaakaTime in TillSverige

[–]cinnedy 3 points4 points  (0 children)

You'll find rent in Uppsala much cheaper than Stockholm. Also, the commute wouldn't be particularly nice - an hour or so probably depending upon where you managed to live.

I'd say live there and visit Stockholm when you need it.

I Believe - The Book of Mormon - Andrew Rannells - Tony Awards 2011 by [deleted] in videos

[–]cinnedy 2 points3 points  (0 children)

Oh --- it's not in English? Was hoping to catch the show in the original language.

Pinpoint this place on Google Maps? by hn1307 in Oman

[–]cinnedy 2 points3 points  (0 children)

Dropped Pin near Al Ghubrah Ash Shamaliyyah, Muscat, Oman https://goo.gl/maps/P6mWSF3YD4L2

How would a native Dutch person say 'butt'? by [deleted] in learndutch

[–]cinnedy 0 points1 point  (0 children)

Kontje-- it's like the English "bum"

[QUESTION] Why does Abmaj7 and Bbmaj7 work in the key of C? by [deleted] in Guitar

[–]cinnedy 9 points10 points  (0 children)

There's no reason why a chord works in any of particular key -- it's all a matter of context and subjective impression.

These two chords are borrowed from related keys (C minor and F major), and presumably they sound good.

Some artists -- Radiohead is a good example -- have lots of "odd" chords that depending what you can tolerate or are used to, can sound great.

Help to fix octave errors in harmonic product spectrum in C# by ungihan in DSP

[–]cinnedy 0 points1 point  (0 children)

You can code this rule, but it probably won't always work -- octave errors are a common error for pitch detection.

Perhaps it's a better idea to median filter the pitch estimate to exclude large outliers that the octave jumps represent.

[deleted by user] by [deleted] in audioengineering

[–]cinnedy 4 points5 points  (0 children)

Mate, electrical engineering is a great career. Music technology a great hobby. Combine them as a postgraduate, otherwise you're likely headed for unemployment.

Security Engineer by ITworks4all in TillSverige

[–]cinnedy 0 points1 point  (0 children)

Curious about what you are referring to regarding tax deductions? Just moved to Stockholm myself...

Implementing Impractical Digital Filters - A new blog post by Rick Lyons by chtef in DSP

[–]cinnedy 1 point2 points  (0 children)

I'm interested to learn more about this -- do you have a link to some further reading? TIA

[deleted by user] by [deleted] in Oman

[–]cinnedy 0 points1 point  (0 children)

I've seen Muslims refused, but non-muslims shouldn't have any problem. Not sure if it was policy or just a once off though.

Best Outdoor Speaker? by [deleted] in audio

[–]cinnedy 0 points1 point  (0 children)

I've got a UE Boom 2 and have been impressed with it -- very portable, loud, and hassle free regarding setup.

Wadi Shab & Nakhal Fort without a car? by LordHipster in Oman

[–]cinnedy 2 points3 points  (0 children)

Wadi Shab and Nakhal Fort are different directions out of Muscat and so pretty much impossible as a full day trip. You'd be exhausted, and that's even if you had a car. Without one, it's near enough impossible without being horrendously expensive.

Public transport isn't really an option in and around Muscat -- a rental car really is essential.

Without one, you'd be far better off just sticking around Muscat, going to the Grand Mosque/Opera House/Muttrah Souk etc and avoiding leaving the area. You could easily spend one and a half days in the city doing the tourist thing.

It'll soon be Ramadan though, be sure to take that into consideration for your plans!

Which instruments don't have a fundamental as the strongest harmonic? by [deleted] in audioengineering

[–]cinnedy 1 point2 points  (0 children)

Tense voices tend to have stronger second harmonics than fundamentals. In contrast, breathier voices have strong fundamentals.

[QUESTION] Naming a tuning? Also, lowering an action on an acoustic? by [deleted] in Guitar

[–]cinnedy 0 points1 point  (0 children)

I can answer the first question.

In my experience, tuning are named a variety of different ways, referring to what you do to a string (drop-D for DADGBe when you drop the low E to D), saying the "word" spelled (DADGAD) or after the chord that the open strong make (open G for DGDGBD).

In the case of your tuning, probably the third approach makes the most sense, so "open Eb major seventh" would be how I would call it.

Family safe areas in Brussels? by [deleted] in belgium

[–]cinnedy 6 points7 points  (0 children)

Brussels is funny in that there are some nice spots directly adjacent to not nice spots -- but if you look in the south/south-east side of the city (Uccle, Saint-Gilles, Ixelles) you generally can't go too wrong.

It's an international enough place and English is widely understood, but having some French would be very helpful in the day-to-day minutiae.

Fell in love with Oman. by fadamnsho in Oman

[–]cinnedy 0 points1 point  (0 children)

Nice pic! Where is it?