Author Archives: Nick
Gravity Freakin’ Waves!
How lucky we are to live in this time, the first moment in human history, when we detected gravity waves! It was only 4 years ago in 2012 when the Higg Boson was discovered at the LHC, 2 years ago we landed on a … Continue reading
Nsound spotted in the wild
Today I found a simple Python app that uses a TK GUI that wraps around Nsound’s AudioStream to resample .wav files: Link: ResampleGui
Nsound::biquad::FilterBank Work In Progress
I’ve made some good progress on a biquad filter bank on this branch. I’ve been able to replicate Figure 10 from this reference: That’s a filter bank with 4 individual biquad filters, here’s the C++ code that produced the plot:
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#include <Nsound/NsoundAll.h> #include <Nsound/biquad/FilterBank.hpp> #include <iostream> using std::cout; using namespace Nsound; using namespace Nsound::biquad; int main(void) { float64 sr = 48000; // sample rate auto khz = 1000.0; Biquad bq0(sr, 0*khz, 1*khz, 9, 6, 0, 4); Biquad bq1(sr, 4*khz, 2*khz, 12, 9, 0, 4); Biquad bq2(sr, 9*khz, 2*khz, -6, -3, 0, 4); Biquad bq3(sr, sr/2, 8*khz, 6, 3, 0, 4); FilterBank fb(sr); fb.add(bq0); fb.add(bq1); fb.add(bq2); fb.add(bq3); cout << "-----------------------------------------------------------\n" << "FilterBank: fb.to_json()\n" << "-----------------------------------------------------------\n" << fb.to_json() << "\n"; fb.plot(); Plotter pylab; pylab.ylim(-7, 13); pylab.title("N=4, Butterworth"); Plotter::show(); return 0; } |
The … Continue reading
Nsound spotted in the wild
Here’s another link to someone using Nsound: Play MT
More YouTube Nsound Videos
I’ve posted several more videos about Nsound: Oscilloscope Moog VCF & DelayLine TapeDeck
Nsound + Biquad + JSON
I’ve stared using github to host the nsound source code here. I’m currently working on porting some of the code in this paper: High-Order Digital Parametric Equalizer Design I’ve ported most of the MATLAB code to Python and have made … Continue reading
Nsound spotted in the wild!
Occasionally I search the web to find people using Nsound in their project, here are a few links: Algorithmic Music Composition Sonification of images Sonification of sand Europython 2014 MickSynth
Yahoo Mail Bug Can Lead To Loss Of All Messages
Yesterday while using Yahoo Mail, I was clearing out my Trash folder by clicking on the trash icon. The usual popup dialog asking me to confirm showed up so I clicked Okay. At the time, I had only 4 items … Continue reading
Nsound 1.0 Roadmap
I’ve been thinking about what would it take for a Nsound 1.0 release. Below is a working outline of the things I’d like to have in 1.0: Low Latency Real-Time Audio on Mac, Windows, and Linux Already have low latency … Continue reading
Nsound Circular Iterators
On the Nsound development branch, I’ve exposed the C++ circular iterators for the Buffer class to the Python module. This code will eventually get released as part of Nsound-0.9.3. Here’s how one might use them:
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import Nsound as ns b = ns.Buffer() b << 1 << 2 << 3 c = b.cbegin() for i in xrange(10): print float(c) c += 1 |
Which will produce the … Continue reading