STEVAL-MKI109V3 Evaluation Method for LIS25BA

littleshrimp

STEVAL-MKI109V3 Evaluation Method for LIS25BA [Copy link]

 

STEVAL-MKI109V3 can be directly connected to the LIS25BA sensor to collect audio data

You can see real-time data changes through Unico's Plot

https://en.eeworld.com/bbs/thread-1114662-1-1.html

If you want to analyze long-term audio data, Unico software also provides a data recording function.

The recording function can record audio for a long time and then analyze it through other software

Because it is raw data, we usually use EXCEL software to view the complete waveform

But LIS25BA is a high-frequency acceleration sensor after all, so it is definitely not good to just watch without listening.

Now I will teach you a way to quickly convert the source data .txt file output by Unico into a 3-channel audio to listen to the changes in acceleration.

The data recorded by Unico is in the following format, including a header and 3 columns of acceleration data.

The same .txt file can be turned into an audio file by changing the data header to the following, and then analyzed by dedicated audio software, or saved as a regular audio file for easy playback with other players

SAMPLES corresponds to the number of samples and is modified according to the actual length of the collected data.

SAMPLERATE is modified according to the sampling rate, and the others remain unchanged

SAMPLES:	10000
BITSPERSAMPLE:	16
CHANNELS:	3
SAMPLERATE:	8000
NORMALIZED:	FALSE

After saving the file, open it directly with Adobe Audition and you can see 3 files appear on the left, each file corresponds to a channel

Select a channel and press the space bar to play the sound collected by lis25ba.

Fly666

Awesome, this is much more convenient