Recent content by sm52

Sound card calibration data is used if you will be measuring anything using a loop, an output-input cable. If not, you can not do it or do it later. To match the main speakers to the subs, you need to learn how to make measurements with acoustic time reference. Read about this in the help...

Sonarworks is a good microphone. Use a 0-degree correction file when positioning the microphone parallel to the floor, in the direction of the driver being measured. 90 degrees when the microphone is positioned vertically.

For such a case, as a reference speaker, place an additional tweeter nearby, in a small housing, or secure it so that it is stationary during measurements. Connect it to the second output of the sound card. And you indicate to REW that the second output channel is the reference one. The whistle...

To determine acoustic centers, do not install the microphone in openmouth. This task will be completed properly if you install the microphone 1 m from the baffle. Or 2 m from the baffle. Even better, at the listening location. Reflections will not interfere to determine drivers timing.

Thanks, I saw it.

John, hello. Where can I find it?

John, when I look at the distortion tab for the downloaded FSAF measurement file, and the TD+N graph is displayed, there is an option to change the maximum number of harmonics displayed in the THD. If you change this digit up or down from the current number, a Java exception occurs.

John, if the FSAF measurement was done from a file, what would the TD+N distortion graph show, the sum of all distortions plus noise? If the signal received by the microphone differs from the file, how can I highlight this difference on the graph? Maybe the TD+N graph is the difference graph?

See specifications. Umik-2 has a processor. Any processor needs a clock generator to work. The Umik-1 does not have a processor. It doesn"t need a clock generator. It receives the sample rate from the USB bus. Therefore, many people write that under the same conditions, the impulses of umik-1...

Yes. If they agree. But instead of Umik-1, it is better to take Umik-2. The Umik-2 has its own clock generator.

I tried all the measurements one by one. Now there is no mistake.

Yes.

John, an exception occurred when trying to generate RT60 Decay.

Now try leaving on only those in the recording and playback devices of the system that are needed for REW, for measurements. Disable the rest.

I can never take measurements at 128k. Java drivers are slower than ASIO. Or this is how the operating system works with Java drivers. Check the input and output channels after switching from ASIO to Java, and vice versa. Automatically, they can be different.