Audacity Forum

bgravato wrote:You could try using sox.

Is there a download site for sox binary for Windows? So far I've only found source files available for download, and gcc also needs to be compiled with something before I can use it to compile sox. Snowball effect

I have a set of over a thousand short MP3's that I want to put on an MP3 player. Problem is their sample rate is 11k, and the MP3 player doesn't play anything under 22k. No problem with bit rate, it's the sample rate. I've found MP3 resampling programs, but either they're not free (I only need to do...

A gold mine of information here. Many thanks! I think my DI box design will include a tunable 2-pole HPF. The rest of the spectrum I can take care of satisfactorily with the channel eq on the board.

Just tried the RCA 1947 eq on my test recordings. It really boosts the "rigging noise" although it does restore the missing bass in the recordings without the added capacitor. Sound is too muffled though. I agree one could come up with a better setting.

@Steve: My wife says "Thanks"! @Emmah: This was her great-great-grandfather's violin. 'nuf said? @Paxtonbt: The multipoint pickup sounds like the way to go. Also sounds expensive (we're on a zero-income budget). Do the 3 transducers have separate cables for external mixing? I don't have a good menta...

I'm now using 15 nF across the pickup. With the 2.2 k load of the board on the dbox, which probably expects a 600 Ohm load, the input impedance is in the 50-70 k range over most of the spectrum. It's capacitive above, and inductive below, 2 kHz. The 15 nF cap results in a 2-pole response with -3dB p...

I tried the shunt capacitor experiment, using 39 nF which is less than I originally intended. I happened to have one that fit nicely in the strain relief of one of those old genderless microphone connectors for which we also had a 1/4" adapter of the same vintage. I made from this a removable capaci...

My next experiment will be just to add a capacitor across the input to the direct box. Pickup + cable capacitance is around 3 nF and I'd like to get the corner frequency at least down to 100 Hz (an octave below the G string). Still using the dbox, increasing the total C to about 60 nF should do it (...

I measured the d-box input z. It's 21.8k resistive in parallel with about 360 pF, which must be the winding capacitance. I measured it from 100 Hz to 20 kHz. It probably goes inductive at low enough frequency, but that shouldn't affect the violin. With the pickup+cable capacitance of about 3 nF, thi...

The setting of a track's Gain slider seems to affect the Noise Reduction effect, and the result is different in Preview from when applying the effect. Let's say I sample the noise profile with the slider at 0. Then I preview the Noise Reduction effect with the slider at +10. The noise is reduced wit...