- #Truerta alternative serial#
- #Truerta alternative portable#
- #Truerta alternative download#
- #Truerta alternative free#
- #Truerta alternative windows#
My plans are for multiple AutoTuba (4) using ground plane half space, even though this will fall significantly short of the required 30 square feet for optimal performance.Īs for the ECM8000, I understand this is a pretty good measurement mic for a low price, and suitable to the above purpose. Like all horns, they require sufficient length and mouth area to be efficient. Those wanting 41 Hz will have to find another solution. RTA analysis of the Tuba24 shows it is good and loud in the PA region. The Tuba24 is a short horn (60 Hz) with a bandpass throat chamber. The AutoTuba interests me more, because it is a true horn, quarter-wave design for 41 Hz. I apologize to anyone offended by the commercial nature of this post.I bought the plans for the Tuba24 and the AutoTuba.
#Truerta alternative portable#
Here is a link:Ĭombining the software with a good USB audio interface (such as the Tascam US 122 or similar) and your existing PC notebook provides a portable but powerful audio testing capability with only a modest investment.įor inexpensive measurement mics I recommend: In software I can vary the resolution and so I provide all the standard resolutions ranging from 1 octave to 1/24th octave. My personal history with handheld (hardware) RTA's is what led me to develop my TrueRTA software app. These were very pricey analyzers back then and I always wished I could have one handy all the time. When the 1/3rd octave hand held analyzer became available we added it to our toolbox.
#Truerta alternative download#
I remember well using a one octave hand held analyzer to check the response of concert sound systems in the late 1970's. Download detailed and straightforward instructions for setting up Room EQ Wizard and True RTA for use with the UMI-1.
#Truerta alternative free#
The one octave version of the analyzer is free and never expires. In addition to traditional pink noise testing I also provide "Quick Sweep" a swept sine wave (short log sweep) test which provides a good alternative to pink noise testing. You can use it with any good audio interface. It includes RTA, signal generator, oscilloscope and dB meter.
#Truerta alternative windows#
TrueRTA (Level 4) is a 1/24th octave RTA software app for Windows which sells for $99.95. Please take a look at my TrueRTA software at the link below. We're asking "How much time does it take for my audio to get back here to my delay stack?" Signal leaving the console is the Reference side of the measurement, a microphone's output, placed at the appropriate seat in the delay zone, is the Measurement side of the equation.Ī really low latency device measures the difference in arrival time as 200 mSec.Ī really high latency device measures the difference in arrival time as 200 mSec. Let's look at a hypothetical Impulse Response measurement because we're trying to find the proper offset delay for the delay stack.
#Truerta alternative serial#
What's being left out of that thought is a suspension of serial time during the measurement proicess. So it's reasonable to say 'No, we can't measure that." The question becomes " Can we accurately measure something that happens faster than the length of this latency?" Logic would tell us that one needs an action before its associated reaction can take place. I haven't measured my USBPre in a decade or so but I'll guess it sits right around there also. Typically, an interface's A/D converter has a few milliseconds of throughput delay. Clayton seems to be suggesting that something could slip through the measurement setup if the interface has a long throughput time. Let's address the concern of a large latency hindering accuracy. I sense a teachable moment for some that may be following along. Yes firewire is becoming more and more rare to find on new computers, and the ability to add expansion cards to laptops is becoming less also, so its not like you can add a firewire port to your laptop as easily (or at all in most cases) like you could before. I am happy that your Roland OctaCature as worked flawlessly for you, as it should and is intended to do, but I continue to hear people have more complaints and problems with USB interfaces, everyone always wants to 'upgrade' to firewire. Your video card will perform better with dedicated memory, just like the firewire can provide better performance due to its dedicated chip. It’s just like your laptop video card sharing the system memory or having dedicated system memory. It seems like on their forums there is the general consensus that the Presonus and Motu stuff is considered a step above the USB stuff. Jamie Anderson does talk about some signal level discrepancies between the interface and the software that has caused him some problems with the OctaCapture. And James Woods, Rational Instructor, of Rational Acoustics uses Presonus Firebox and the Firepod.