leftaroundabout

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	2,410 reputation	bio	website		visits	member for	1 year, 11 months
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May 18	comment	Combining 2 Mono Microphones to 1 mono output with a 4 channel recorder in the middle The setup as you describe it seems horribly hacky. What exactly are you trying to achieve?
May 13	comment	Sound Card VS DAC Unit @Anonymous: that's the problem. Power supplies tend to introduce all kinds of nasty noise phenomena into a circuit; a sound card needs to mitigate this by well-designed decoupling, buffering of the supply rails etc.. A digital optical connection on the other hand is a perfect Galvanic isolation "for free", and as said the transmission itself is practically lossless (there's a thing called jitter, but this is usually not much of an issue).
May 9	comment	Acoustic Violin Pickup : Fishman V-200 - possible setups (cont.) Some amps also have a "lo" input, which has a lower impedance – but seldom lower than 50 kΩ – resulting not in a thinner, but mellower sound, because the PU starts to cut off the high frequencies. — That works exactly the other way around for piëzoelectric pickups such as this Fishman violin one, because those have a capacitive impedance, which indeed rises for low frequencies rather than high ones. And it's usually much higher than 100 kΩ even at violin frequencies.
May 9	comment	Acoustic Violin Pickup : Fishman V-200 - possible setups "I've seen the impedance of electrical guitar pickups quoted around 20K to 40K ohms..." that's pretty much nonsense. Passive pickups don't have a fixed ohmic internal impedance, but either an inductive (magnetic PUs as in electric guitars/basses) or capacitive one, so you can only specify it for a given frequency. At 20 Hz, typical guitar pickups have just their DC resistance of something like 10 kΩ, but at 5 kHz the inductance (≈ 3H) kicks in and you get something like 100 kΩ! Guitar amps generally have imput impedance much higher than that, something like 1 MΩ.
May 9	awarded	Organizer
May 9	revised	Sine wave frequencies Reworded and expanded question, to better fit the AVP scope. Retagged: this has nothing to do with digital sampling ([sampling-frequency]), but everything with psychoacoustics.
May 1	comment	What Happens to Frequencies Above the Nyquist Limit? Note that this wouldn't happen in a properly designed system – good ADCs and nonlinear digital effects include bandlimiting precautions, so if you "try" to produce frequencies higher than Nyqvist you only get silence there.
Apr 20	comment	What is a good mic in the $200 range for miking an acoustic guitar (for use with Apogee duet portable studio)? But you're not intending to use the SM58 for recording vocals, are you? I mean, it works and is completely ok for recording the singer in a rock band live, but if there's only an acoustic guitar as accompainment it's going to sound rather dull.
Mar 16	revised	Free (or great) VST panner with haas effect edited body
Mar 9	comment	VST plugin that hosts VST plugins You mean, it should simply load a chain of VSTs and use them as if they'd been loaded directly by the DAW? Why would you want that? If your DAW has something like a maximum number of plugins restriction, it's a broken design, get a better one. For instance, Reaper.
Mar 4	comment	Reverse voice anonomizing algorithMs I meant, if the anonymisation has the origin as you ascribed (multiple channels of different pitch-shifting), rather than some other process.
Mar 2	answered	Reverse voice anonomizing algorithMs
Mar 2	comment	Reverse voice anonomizing algorithMs "you will get the sum of these frequencies (1500 Hz) as well as the difference (100 Hz) in the resulting output" only if you pull the signal through something nonlinear; as long as you just play the clean mixture you only get the frequencies you put in and these are seperable without much ado. What is a problem is that speech is not just "contains a frequency of 1000 Hz" but is itself quite a wild mixture. Nevertheless...
Mar 2	answered	Free (or great) VST panner with haas effect
Mar 2	comment	Color temperature Perhaps you could clarify this – you might have used the words "warm" and "cold" in two opposite meanings here, or at least said it in a way that might confuse people. Warm light, the yellowish kind characteristic for old incandescend bulbs, has in fact a lower color temperature than blueish, "cold" light from e.g. fluorescent tubes. — Also, I don't quite agree about using light sources of different temperature in the same scene; this can be used as an effect but usually just makes either of the objects look strange.
Dec 11	comment	Is this audio signal path enough/correct? Handheld recorders can be really ok, though you will probably really need a preamp such as the cloudlifter to use them with ribbon mics.
Dec 11	comment	Is this audio signal path enough/correct? Right. Well yeah, ribbons really have a special charm about them, though I would always compare with a condenser: it really depends on a lot of factors which one will sound better. At any rate I would record in stereo to properly capture the concert hall sound. The figure-8 characteristic of ribbons is actually quite helpful here, you can combine them to Blumlein pairs or M/S pais, both are free of phase problems. The latter works also with a condenser as the mid-mike and ribbon only for side, a combination that I quite like (though it's even more special than ribbons themselves).
Dec 11	comment	Is this audio signal path enough/correct? I'm not recommending M-Audio over Apogee, that's not what I wrote there. – As for stereo, nope, it's not difficult to get the standard arrangements right (in doubt, XY is never too bad), much easier than setting up a reverb in such a way that the basic sound is comparably nice and full. (One may add more of a bigger room anyway for an instrument like flute, but that alone will typically sound hollow and lost if there isn't some natural room sound already).
Dec 10	answered	Is this audio signal path enough/correct?
Dec 3	comment	Are there any mixing DAC chip software simulators? That's a simple soft-clipping algorithm. Note that this is already distortion, it's just less audible than hard clipping. Also note that this particular one will horribly break for really high levels (it's basically a finite Taylor expansion, which is only safe for small inputs). I prefer bounded-codomain functions such as 𝜆𝑥. 𝑥 /(1 + 𝑥²) or tanh.