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Summary of Contents for Norsonic Nor145
- Page 1 Norsonic Nor145 & Nor150 Reference Tone Used to reference the correct audio playback level for the listener.
- Page 2 Reference Tone The reference tone is a sound recording made on the device by pressing the CAL button. It’s an internal sound linked to the internal gain and input sensitivity of the microphone. sound recording continuous pink noise sound level of around 70dB which can be played back...
- Page 3 Pink noise is like the Pink Noise sound of the radio tuning.
- Page 4 Pink Noise Adjust the volume of speaker until 70dB is reached at the listening point.
- Page 5 Pink Noise Adjust the volume of speaker until 70dB is reached at the listening point.
- Page 6 Adjusting the sound level of the speaker to the reference tone (pink noise) helps us perceive how loud or quiet a recording is in the context of the complaint.
- Page 7 The ‘Settings’ Load in your NNR app Press SETUP...
- Page 8 The ‘Settings’ Go to ‘Marker’...
- Page 9 The ‘Settings’ Turn ‘Marker 1’ GREEN ✔ Edit ‘Marker 1’...
- Page 10 The ‘Settings’ Name: Reference Tone Type: Toggle Colour: Firebrick Red Action: Recording & Reference Tone...
- Page 11 The ‘Settings’ Reference Tone GREEN ✔ Recording GREEN ✔...
- Page 12 The ‘Settings’ Go back to the SETUP screen. PRESS THE GREEN ✔...
- Page 13 The ‘Settings’ Go to ‘Instrument’...
- Page 14 The ‘Settings’ Go to ‘Reference Tone’...
- Page 15 The ‘Settings’ Reference. Tone: Gain volume: -48dB Type of noise: Pink Noise Excitation. Time: 30 seconds Note: Used in marker Marker 1: should be labelled ‘reference tone’.
- Page 16 The ‘Settings’ Go back to the MEASUREMENT screen. PRESS THE GREEN ✔...
- Page 17 The ‘Measurement’ Press the START key & start your measurement.
- Page 18 The ‘Measurement’ Press SETUP Tap the Marker Button Tap the Reference Tone Wait 30 seconds...
- Page 19 The ‘Measurement’ Download the measurement to NorReview...
- Page 20 The ‘Playback in NorReview’ Find the audio recording reference tone (pink noise) and play it back through the speakers. Note the output level. It might not be exactly 70dB.
- Page 21 The ‘Output Level’ Place your sound level meter at the listening point. 68.5...
- Page 22 The ‘Playback’ Playback the sound and adjust the speaker volume until the sound meter reads the output level you noted. 68.5...
- Page 23 The ‘Playback’ The sound level meter might not read exactly 68.5dB, but should be as close as reasonably possible without any external influence (background noise). 68.5...
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