Re: [music-dsp] Antialias question

Hello Kevin I am not convinced that your application totally compares to a continously changed sampling rate, but anyway: The maths stays the same, so you will have to respect Nyquist and take the artifacts of your AA filter as well as your signal processing into account. This means you

Re: [music-dsp] Antialias question (Kevin Chi)

Thanks Frank, I use cubic interpolation to interpolate between samples and it seems a bit better than linear for me. I am more worried about the downsampling, when the playhead is going faster than the original samplerate and that's when the high frequencies of the original material start to

Re: [music-dsp] Antialias question (Kevin Chi)

Original Message Subject: Re: [music-dsp] Antialias question (Kevin Chi) From: "Kevin Chi" Date: Fri, June 1, 2018 2:50 pm To: music-dsp@music.columbia.edu

Re: [music-dsp] Antialias question

Thanks for your ideas, I'll look into those! It's actually just a digital delay effect or a sample playback system, where I have a playhead that have to read samples from a buffer, but the playhead position can be modulated, so the output will be pitching up/down depending on the actual

Re: [music-dsp] Antialias question

Original Message Subject: Re: [music-dsp] Antialias question From: "Sound of L.A. Music and Audio" Date: Fri, June 1, 2018 4:48 am To: music-dsp@music.columbia.edu

[music-dsp] [AES LAC 2018] Final Deadline

* AES LAC 2018: FINAL DEADLINEDear Colleagues,The 2018 AES Latin American Congress of Audio Engineering (AES LAC 2018) organizing committee has decided to extend the paper submission deadline until Tuesday, June 5, 2018. There will be no further

Re: [music-dsp] Antialias question (Kevin Chi)

Hi Kevin. I'm the least-expert guy here I'm sure, but as a fellow newbie I might have some newbie-level ideas for you. Just to mention something simple: linear interpolating between samples is a huge improvement in reducing aliasing over not interpolating. For instance if your playback math

Re: [music-dsp] Antialias question (Kevin Chi)

Hey, Frank — I use four-point, third-order hermite resampling everywhere. It's fast, relatively simple, and as good as will be necessary for most applications. Linear resampling can introduce some perceptible harmonic distortion into higher frequencies. This will be especially noticeable when