Windowing — one of the new features in Open Sound Meter v1.3
It allows you to "rewindow", which means applying another window on the measurement. It can be imported data, previously created measurements, or even currently active measurements.
Let's look at an example.
1) The first measurement is an array containing 13 Meyer Sound Melodies. Its transfer function contains the first arrival and reflections. You can easily see that through in time and frequency domains.
2) With a Windowing source, you can isolate and investigate only the first arrival. Here, using only 45ms of the original time window, a new transfer function was calculated with an exponential window function.
3) To check how close is a windowed result to the original source, we can measure one element on the floor and compare the results.
4) To double check, you can export impulse response from MappXT and import it to Open Sound Meter.
5) Let's use again the windowing source to calculate the frequency response from imported IR.
6) Finally, we can use a new diff operation to analyse how close the results are.
If you want to support feature development, you can do so with PayPal: https://www.paypal.com/paypalme/PavelSmokotnin
iPad version: https://apps.apple.com/app/id1552933259
Desktop versions: https://opensoundmeter.com/
It allows you to "rewindow", which means applying another window on the measurement. It can be imported data, previously created measurements, or even currently active measurements.
Let's look at an example.
1) The first measurement is an array containing 13 Meyer Sound Melodies. Its transfer function contains the first arrival and reflections. You can easily see that through in time and frequency domains.
2) With a Windowing source, you can isolate and investigate only the first arrival. Here, using only 45ms of the original time window, a new transfer function was calculated with an exponential window function.
3) To check how close is a windowed result to the original source, we can measure one element on the floor and compare the results.
4) To double check, you can export impulse response from MappXT and import it to Open Sound Meter.
5) Let's use again the windowing source to calculate the frequency response from imported IR.
6) Finally, we can use a new diff operation to analyse how close the results are.
If you want to support feature development, you can do so with PayPal: https://www.paypal.com/paypalme/PavelSmokotnin
iPad version: https://apps.apple.com/app/id1552933259
Desktop versions: https://opensoundmeter.com/
Happy new year!
I added a chat to this channel, where we can discuss measurement‘s questions 🎅🎅🎅
https://t.me/+pO2piqkdV8I4OGFi
I added a chat to this channel, where we can discuss measurement‘s questions 🎅🎅🎅
https://t.me/+pO2piqkdV8I4OGFi
Telegram
Open Sound Meter Chat
You’ve been invited to join this group on Telegram.
Global standard for safe listening venues & events
World Health Organization.
https://iris.who.int/bitstream/handle/10665/352277/9789240043114-eng.pdf
World Health Organization.
https://iris.who.int/bitstream/handle/10665/352277/9789240043114-eng.pdf
Merlijn van Veen
New article committed to the "Beaming Frequency" that impacts each line array. And how it causes tonal variation throughout the audience. Enjoy!
https://www.merlijnvanveen.nl/en/study-hall/206-beaming-frequency
New article committed to the "Beaming Frequency" that impacts each line array. And how it causes tonal variation throughout the audience. Enjoy!
https://www.merlijnvanveen.nl/en/study-hall/206-beaming-frequency
Merlijn van Veen
Beaming Frequency
The 'Beaming Frequency' is where curved line‑source behavior strays from straight line‑source behavior. Line arrays are hybrid solutions that exhibit both straight as well as curved line‑source behavior. The former causes Proportional‑Q — in the vertical…
https://oksound.fi/oksound/on-axis/
One more useful application in tools folder 😀
One more useful application in tools folder 😀
Don‘t forget to select your outputs for the generator.
Of course, when you want to produce some noise 😀
Of course, when you want to produce some noise 😀
Open Sound Meter pinned «Happy new year! I added a chat to this channel, where we can discuss measurement‘s questions 🎅🎅🎅 https://t.me/+pO2piqkdV8I4OGFi»
A few days ago in the FB group Open Sound Meter Practitioners, my old post from 2018 was brought up. It was almost 6 years ago! Since that time tens of thousands of engineers around the world started to use OpenSoundMeter.
I'd like today to clarify a little one of the basic ideas behind the application. There is no difference between measurement data made some time ago and current active measurement. It's always measurement data, made somewhen, a few milliseconds ago or a few years, it doesn't matter. That means that any operation, that you can apply on any measurement you can apply on all types of data.
For example, let's look at the math source's summation function. You can check how datasets will align together. My favorite usage of this one is to see a summation of the current active measurement with a stored one. In a classic sub-top align game you can change settings in your DSP for the sub channel and see in real-time how it will combine with the top. If you are a fan of the silent tuning approach, you can do it for already stored data.
Furthermore, the math source is also a source and can be used for another math operation. When you do multimicrophone measurements, you can create an average and use it in another operation to check the virtual summation of it with previously stored data or the difference with a target trace, you use. Another tool I use for averaging is to see also min and max values of the averaging source.
When we speak about some stored source it doesn't mean that this data should come only from the current project, you can import data from another project or even created by another software. The import function supports all the common standards. I usually use the export function in prediction software (if possible) and import predicted data in the project to see the difference.
Imported data is not always in the required window size for usage in the current project and normally contains only frequency or time domain. In Open Sound Meter both domains are always present in the source. With the help of a windowing source, it's possible to convert any incoming data to the needed one and also restore a missed domain.
Additionally, there is a filter source where you can set up a filter. It allows you to observe it (strongly recommended btw) and apply it to another source. To emulate a 10-band eq you can use the math source with apply operation and count 10. Now apply this created eq to some measurement of the speaker and then again use virtual summation to see the final result.
There are unlimited ways to use operations in Open Sound Meter and you can go as far as you want. It is even possible to create an FIR filter in the application, it's probably not the easiest task for now, but I'm going to finalize this functionality in an easy-to-use source right in the application.
I'd like today to clarify a little one of the basic ideas behind the application. There is no difference between measurement data made some time ago and current active measurement. It's always measurement data, made somewhen, a few milliseconds ago or a few years, it doesn't matter. That means that any operation, that you can apply on any measurement you can apply on all types of data.
For example, let's look at the math source's summation function. You can check how datasets will align together. My favorite usage of this one is to see a summation of the current active measurement with a stored one. In a classic sub-top align game you can change settings in your DSP for the sub channel and see in real-time how it will combine with the top. If you are a fan of the silent tuning approach, you can do it for already stored data.
Furthermore, the math source is also a source and can be used for another math operation. When you do multimicrophone measurements, you can create an average and use it in another operation to check the virtual summation of it with previously stored data or the difference with a target trace, you use. Another tool I use for averaging is to see also min and max values of the averaging source.
When we speak about some stored source it doesn't mean that this data should come only from the current project, you can import data from another project or even created by another software. The import function supports all the common standards. I usually use the export function in prediction software (if possible) and import predicted data in the project to see the difference.
Imported data is not always in the required window size for usage in the current project and normally contains only frequency or time domain. In Open Sound Meter both domains are always present in the source. With the help of a windowing source, it's possible to convert any incoming data to the needed one and also restore a missed domain.
Additionally, there is a filter source where you can set up a filter. It allows you to observe it (strongly recommended btw) and apply it to another source. To emulate a 10-band eq you can use the math source with apply operation and count 10. Now apply this created eq to some measurement of the speaker and then again use virtual summation to see the final result.
There are unlimited ways to use operations in Open Sound Meter and you can go as far as you want. It is even possible to create an FIR filter in the application, it's probably not the easiest task for now, but I'm going to finalize this functionality in an easy-to-use source right in the application.
Something new on the market 😀
https://www.behringer.com/product.html?modelCode=0506-AAB
https://www.behringer.com/product.html?modelCode=0506-AAB
Behringer
Behringer | Product | ECM PRO
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VIEW IN TELEGRAM
My wife asked me very nicely not to release without finishing this feature 😊 But now, I’ll put all my mics in one group with synchronized settings
An article about measurement microphones.
https://www.jochenschulz.me/en/blog/measurement-microphone-comparison-isemcon-emx-7150-vs-behringer-emc8000-vs-beyerdynamic-mm1
https://www.jochenschulz.me/en/blog/measurement-microphone-comparison-isemcon-emx-7150-vs-behringer-emc8000-vs-beyerdynamic-mm1
Jochen Schulz
Measurement Microphone Comparison — Jochen Schulz
Comparison test between Behringer ECM8000, Beyerdynamic MM1 and iSEMcon EMX-7150. Is the additional price worth it? And which microphone is recommended for beginners in speaker measurement?
After clarification of all technical data (including diffuse and…
After clarification of all technical data (including diffuse and…