Re: [music-dsp] PCM audio amplitudes represent pressure or displacement?

2017-10-01 Thread Richard Wentk
Most speaker/amp systems produce a high-pass filtered step response - i.e. an exponential decay curve - because there’s always at least one DC blocking capacitor between the DAC and the speaker. (Usually there are more.) DC-coupled systems exist, but they’re not common and they’re certainly not

Re: [music-dsp] entropy

2014-10-21 Thread Richard Wentk
It would probably sound like a noise gate, and perhaps not terribly exciting. On the next level up, frequency domain and/or variable filter adaptive noise cancellation is a specialised but well-understood subset of DSP lore. (Try any cell phone, VOIP service, or video chat system for a demo.)

Re: [music-dsp] entropy

2014-10-12 Thread Richard Wentk
None at all, because Shannon only makes sense if you define your symbols first, or define the explicit algorithm used to specify symbols. Relying on human pattern recognition skills to say 'oh look, here's a repeating bit pattern' says nothing useful about Shannon entropy. The whole point

Re: [music-dsp] entropy

2014-10-12 Thread Richard Wentk
Yes, great. Now how many bits does a noisy channel need to flip before your scheme produces gibberish? Richard On 12 Oct 2014, at 12:36, Peter S peter.schoffhauz...@gmail.com wrote: So, for more clarity, my algorithm would segment the following bit pattern

Re: [music-dsp] a weird but salient, LTI-relevant question

2014-05-08 Thread Richard Wentk
I'd recommend Intelligence by Jeff Hawkins for some thought-provoking insights into high-level perceptual processing in the brain. Richard On 8 May 2014, at 06:59, Enr G e.glerean@gmail.com wrote: My two cents as a person in the field: the human hearing system is kind of an LTI...