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Live sound mixing – watch those bass frequencies for the neighbors

Authorities prescribe limits in the bass frequencies

Getting a bass sound you can feel through your whole body and successfully blending it into the whole mix is a real payday when mixing live bands. We have noticed a trend in many countries around the world. The authorities are sitting up and paying attention to the effect the bass frequencies have on neighborhood noise. So, you need a sound level meter that not only keeps you within limits, but allows you to regulate the bass frequencies too.

The XL2 Sound Level Meter does just the job. To constantly monitor at the loudest audience position while the sound level meter is situated at the Front of House, the XL2 allows a correction value to be recorded for LAeq and, with the XL2 and firmware V3.33 or higher, now also for LCeq.

This new feature, recently added to the XL2 functions, provides you with the ability to monitor the C-weighted equivalent level, LCeq, in the loudest position in the room as an offset to the Front of House measurement position. C-weighted values emphasis the low frequencies more than A-weighted values.

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Speaker and Microphone Measurements: Eliminate reflections while testing

Elimination of reflections in acoustic measurements

Acoustic reflections in rooms, in the form of reverberation, contribute significantly to the characteristic of sound. In acoustic measurements for quality testing of loudspeakers and microphones, however, these reflections can produce inaccurate results and should therefore be excluded as far as possible. The measurement results must be reproducible and not significantly influenced by the room acoustics. Good news: there is a viable alternative to building a large anechoic chamber; testing can be done in a reverberant room, and the reverberation can be electronically removed from the measurement results. The process involves time-windowing the impulse response.

In some circumstances, reverberation is required. The proverbial „good acoustics“ of concert halls are created through the deliberate use of acoustic elements, which guide the sound waves emitted by the musical instruments to the listener's ear through reflection on different propagation paths. In communication, such as in classrooms, attempts are made to reduce but not completely eliminate the amount of reflections, to improve the intelligibility of speech.

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Also in this newsletter

Speaker and Microphone Measurements: Eliminate reflections while testing

How to take a Minirator MR-PRO screenshot?

Sound Bite


You are welcome to meet NTi Audio at the following events:

19 - 22 March 2018
DAGA 2018
Booth No. 16
Munich, Germany

11 - 13 April 2018
InfoComm 2018
Booth: DB5-01
Beijing, China

10 - 13 April 2018
Booth: J54, Hall 3.1
Frankfurt, Germany

23 - 24 April 2018
Cardiff, GB


How to …

...take a Minirator MR-PRO screenshot?

• Connect the Minirator MR-PRO via USB to the computer. The MR-PRO will show up as a drive on your computer.

• Create a new folder “Screen” in the root of this drive.

• Disconnect the USB cable from the computer.

• Simultaneously press the On/Off button and the Enter button to store a screenshot in the folder “Screen”.

Sound Bite

Allegedly, recently this very old voice recording of a famous person was found saying,

“I feel a great burden of responsibility.”

Who can we eliminate from this list as having not recorded this?

• Sherlock Holmes
• William Shakespeare
• Queen Victoria
• Nero

Reply to this email with your answer.

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