2021 is a year of rethinking. In March, this year, I thought about closing the source code of some of my Open-Source libraries in the first “Rethinking Open Source” post. Now, I think it is a mistake. At the very least, the pitch-detection code should remain open. And indeed, while I said that the pitch-detection …
Before I jumped into this rabbit hole, I wouldn’t have thought that onset detection would be so deviously tricky! I just wanted to generate ADSR envelopes from the multichannel guitar signal. It looked easy, until I actually tried to implement it. But now I think I have something that works really well.
Ascend VPU v1.1.1 is released. This is still an extension of the evaluation period to March 31, 2021 and probably through April. Why the long gestation period? This will be the first of a series of plugins dedicated to the multichannel guitar. I want to be sure everything is working flawlessly. Ascend-VPU will pave the way to more Ascend plugins, all dedicated to the multichannel guitar.
Bitstream Autocorrelation (BACF) is fast and accurate. What can be better? Well, two BACFs in parallel!
A nice little secret with virtual pickups is that each virtual coil reduces random noise due to its inherent averaging effect. Comb filters have that very welcome effect! The more virtual coils you use, the better the noise reduction.
Onset detection is concerned with finding the start of a musical note immediately preceding the attack. Onset detection in conjunction with pitch detection are utilized in various processes such as pitch-shifting, synthesis, adaptive filtering and envelope generation, to name a few. Here, we focus on a very specific application of real-time (no latency) monophonic onset …
I’m very glad to announce the availability of Ascend VPU for evaluation. Ascend VPU is an audio plugin that virtualizes the sonic characteristics of guitar pickups. Given a multichannel pickup with a wide and flat frequency response such as the Nu Multichannel pickup, it is possible to reproduce the frequency response of various pickup positions (bridge, middle, neck) without …
Recap Last week, I presented the 4th part of the Virtual Pickups series. The article continues the series with the introduction of the preprocessor and how it negates the actual pickup’s natural comb-filter effect, with a result that is exceptionally rich in harmonics —very much like an acoustic guitar, with a sufficiently flat frequency response …
A few years ago, I wrote a three part article series about virtual pickups: emulating guitar pickups in software. Now it is 2020 and after a long journey, I am continuing with parts 4, 5 and 6 of the Virtual Pickups series, in anticipation of the release of the Ascend VPU plugin — the first …
Meanwhile, the Q Audio DSP Library is inching its way towards a 1.0 release. For those who don’t know yet what it is, here’s the description lifted from the GitHub project page: Q is a cross-platform C++ library for Audio Digital Signal Processing. Aptly named after the “Q factor”, a dimensionless parameter that describes the …
