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A webcam mic is going to be nowhere near good enough to record infrasound. Most mics, good or bad, aim to capture sound between 20Hz & 20KHz [the approximate absolute limits of human hearing]. The cynic in me would say that roughly, the higher the price, the closer to achieving that they may get. Then there are specialist mics - made by some very ...


5

If you want to save some money and do it yourself you might try suspending a membrane of some sort, like a piece of paper or plastic, and attaching an accelerometer to it. A quick search found the MMA8453Q made by Freescale Semiconductor. It costs a dollar, takes 10bit samples, and samples at a rate of up to 800Hz. The max sensitivity mode is 2g which ...


4

A MixPre-D and a Sony PCM-D10 or PCM-D50, depending on your budget, would be a killer combo: Rock solid build, less weight when you don't need the mic pre's, good control, but you top out at 96kHz as opposed to 192kHz with bag-based recorders. Get the MixPre-D 1/4-20 screw adapter and you can mate it with a D50, nice and clean. I need to pass on the second ...


4

Hi Auddity, I have a 722 and there's a few cool features I turn to that are helpful: you can record simultaneously to hard drive and compact flash (menu setting 6: Rec: Media Select). Recording media rarely fail, but capturing on both media at once covers your bases if you are recording stereo, you can gang/combine the pots for easier level control (28: ...


2

I think you'll find that it's really simple to operate. As powerful as it is, the routings and settings are supremely straightforward. Probably the biggest key concept to remember is that INPUTS can be mapped to TRACKS, and it's not always input L to track 1 and input R to track 2, but front LEDs indicate the track mapping, so again, it's pretty easy. I ...


2

For those of you who have been using this successfully in the field, could you please post full names and model numbers of the USB battery packs/power supplies you have been using with the USBpre? Thinking of getting this to double as a 2-channel field mixer with my Fostex FR-2, as well as a PT interface.


2

In my personal opinion you have no loose. You are still able to do sync clicks per shot with flap like in old time movies... You loose only comfort.


2

The preamps in the Fostex are pretty good but I'd definitely use your MixPre as they are better. Also you will have a much easier time adjusting levels on the MixPre.


2

The Mix Pre preamps are much better than the preamps in the FR-2LE so I would use the line out from the Mix Pre into the Line input of the FR-2LE and work as normal.


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Nathan and Paul have already given you some great tips. Here are my thoughts: Take the time to setup all of your monitoring presets before you go out in the field I always record with the limiter on Transfer your recordings off the machine after your session and format your drive, you don't want to be out in the field, run out of space, and have to ...


2

What you are looking for is a seismograph


2

This is not a direct answer to your question. What you need is not a direct answer because in order to carry out your intentions successfully you will need to know exactly what you are doing. Infrasound is a different world. Recording infrasound is much like exploring the mariana trench or deep space. You will not get far if you don't know where you're going ...


2

There are several variations and it is not possible to answer this as a simple, generic question. Most speakers have built-in crossovers for 2-way or 3-way (or even 4-way) systems. And, of course, self-powered speakers have the amplifier(s) and crossover built-in. The primary place you would need a separate crossover would be where you are using a sub-...


2

The 744T user guide mentions : The 744T is equipped with a record start and stop timer. This allows a user to record a take at a specific time from an unattended recorder. Set the start time in the Setup Menu option REC: TIMER START then set the record stop time in the Setup Menu option REC: TIMER STOP. The 744T will only start recording if ...


2

Most USB devices use the standard USB audio device driver, as they all conform to the USB Audio standard. Behringer has a cohort of haters out there that spend all their time not making music and just bagging hardware vendors they don't like. Behringer actually make some pretty good and affordable gear. RME is also definitely worth a look - their devices are ...


2

For there to be any chance of 'subtraction' to work, there must be a phase-relationship between the two signals, which there is not likely to be in any of the cases you suggest. To understand why there is no phase relationship, consider the fact that with AC the voltage varies between a positive value (where the electrons travel in one direction) and a ...


1

Cheap and DIY way would be piezo disk with somekind of accelerator set up wired up to high impedance input amplifier. Get a cheap hand recorder powered via large power bank to eliminate power grid/pc connections noise. Plenty of videos available on youtube. I have similar setup going for different purposes.


1

I'd say jam if you can. It really depends on what sort of thing you are shooting and how good slate discipline is on set! I think for your film you will be fine-and if you dont have the gear they cant expect it! However, for future stuff the editor will really thank you for being able to sync up automatically without having to manually sync and on a huge ...


1

Timecode is very useful as it really does lock the devices together, but we do not live in an ideal world and sometimes it is not possible to record this way. As others have mentioned, slating each take with a clapper will be a good start. And if you are recording the Sound Devices' output on one of the camera channels, this will also be able to be used as ...


1

I use a Mix-pre into a Nagra Mezzo. It works well and is very portable. With a pair of DPA 4060's I can pack it into a case and take it anywhere. I've not owned 702 before, so can't comment specifically, but I don't think you would regret either choice. One nice thing about the Mix-pre if you go that route is that it works well with either a 744 or the ...


1

I'm not sure if there is a sounddevices forum where you could ask these kinds of questions, since they're rather brand related. You could check on: jwsoundgroup.net/index.php?/forum/16-equipment/ with regards to other brands, i've been very lucky to buy a 2nd hand sonosax recorder for a good price, simply by keeping an eye out for about 1 year. it's a now ...


1

First I'd connect this device to another computer that is not running Windows 8 and see if the same thing is happening there. If it is then you know there's something wrong with the device or rather it's unlikely that it's the computer/OS. If it's not acting up then it is most likely the computer/OS that's at fault. If it's a software problem my next step ...


1

Just so you're aware, USBpre1 does not work with 64bit operating systems - that's why you can get them cheap secondhand.


1

Agreed with Mark and Mike on this. Two major gotchas to be aware of, in addition: The headphone amp is NOY-ZAY. Far noisier than the actual recorded signal. Don't let that throw you. The CF cards need to be uniquely formatted for either stereo or mono. Super weird but there ya go.


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I did this a couple of years ago and published the results at last years International Computer Music Conference (http://eprints.bournemouth.ac.uk/18249/1/ICMC2011%2DPaper_Final_Camera_Ready_ver2.pdf). It is fairly tricky to do and I could not find any example code. I found the hardest aspect was managing the UI.


1

Spend some more time reading the documentation. Discuss in the Apple Developer forums. Forget your project and use something that's already been made: http://www.plogue.com/products/bidule/


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The pre-amps on the mix-pre are close, but they are not the same. I actually prefer them to the 7-Series recorders. They feature lundahl input transformers and the mix-pre also has an optical limiter which is quite nice. I can't say that I'm a huge fan of the 7-series limiters. They do the job, but the mix-pre's limiter is quite warm adds a mid-range creamy-...


1

I do all my radio dram & documentary with a Mix Pre feeding the line inputs of a Marantz PMD670 and the line inputs of my Zoom H2 for backup. It works brilliantly, great combo.


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I totally agree with Shaun and if you are just looking for a solid front end for your recorder to use in the field you might try and find the original mix-pre used, which has since been discontinued. Personally, I think it sounds a lot better and it has a much creamier sounding limiter.


1

If you're planning to do a lot in the field with whatever you buy, then I think you're on the right track. The MixPre-D would probably be the better choice. The USBPre-2 is not as well suited to field work. It can do the job, there's no doubt about that. It's just requires a few extra considerations. If you're looking for something to use more as an I/O ...


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