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

2018-06-01 Thread robert bristow-johnson
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.co

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

2018-06-01 Thread 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)

2018-06-01 Thread Evan Balster
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

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

2018-06-01 Thread Frank Sheeran
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