3 ms·
Yes, take a few seconds of white noise, apply an exponentially decaying envelope, and convolve with the input signal. Of course there is a lot more you can do:
by dspig 9y ago
Yes, take a few seconds of white noise, apply an exponentially decaying envelope, and convolve with the input signal.
Of course there is a lot more you can do: high frequencies decay faster in a real room, the envelope could be a more complex shape, or just skip to near-perfect and convolve with an impulse response measured from a real room.
- bch 9y agoThat’s exactly how I was interpreting your original post, but I had to confirm. The impulse response (real or constructed) was my first thought too... this all sounds intriguing, and it’s a synth day for me today ;)
- tzahola 9y agoWhy does white noise work? Is it because the spectral density of both the Dirac impulse and white noise are flat, and our ears don't care about phase?
- dspig 9y agoIt doesn't have to be white - pink noise works the same just sounds more muffled/bassy. It's more that there is no distinct pattern in the time domain for the ear to pick out, which would add echoes or metallic ringing. The same as a boxy room or shower cubicle will ring/resonate at certain frequencies, but a bigger more complex shaped room will have an effectively random pattern of reflections for a given source and listener position.
- regularfry 9y agoIt's simulating a randomly distributed set of acoustic reflectors. Well, ish. Makes it sound more like a room with stuff in it rather than being in a box.