Unattended Environmental Noise and Weather Measurement

The acoustic characteristics of a room should be suitable for the purpose of the room. In classrooms, for example, a good speech intelligibility is hardly possible if the reverberation time is too long, whereas for a piano sonata in a concert hall, a longer reverberation time may be more effective for a pleasant acoustic sound. These common examples show how essential it...

If you have the Vibration Option installed on your XL2, you can now also record the Peak-Particle-Velocity (PPV) values, as well as the peak and the peak-to-peak values of all spectral measurements, thanks to the new firmware V4.50. Furthermore, you can also now display measured values in fixed ranges.

Bluetooth is the standard interface for wireless transmission of music and speech. It connects speakers, headphones, headsets and earphones to devices such as mobile phones, computers, entertainment systems and car radios. But how can the audio quality of devices with a Bluetooth interface be tested? What does one have to consider?