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Live Sound Engineer Training > Feedback Identification: MacBook Speakers > Flashcards

Feedback Identification: MacBook Speakers Flashcards

COMPLETE Standard mix outputs in live sound applications have 31 bands of EQ applied before signal arrives to the system's speakers. These EQs can be used to notch out feedback. Listen to sine waves at these frequencies and identify them by ear to become a feedback sniper: 20Hz, 25Hz, 31.5Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz 160Hz, 200Hz, 250Hz, 315Hz, 400Hz, 500Hz, 630Hz, 800Hz, 1kHz, 1.25kHz, 1.6kHz, 2kHz, 2.5kHz, 3.15kHz, 4kHz, 5kHz, 6.3kHz, 8kHz, 10kHz, 12.5kHz, 16kHz, 20kHz

1
Q

Name the frequency!

A

80Hz

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2
Q

Name the frequency!

A

100Hz

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3
Q

Name the frequency!

A

125Hz

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4
Q

Name the frequency!

A

160Hz

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5
Q

Name the frequency!

A

200Hz

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6
Q

Name the frequency!

A

250Hz

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7
Q

Name the frequency!

A

320Hz

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8
Q

Name the frequency!

A

400Hz

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9
Q

Name the frequency!

A

500Hz

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10
Q

Name the frequency!

A

630Hz

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11
Q

Name the frequency!

A

800Hz

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12
Q

Name the frequency!

A

1kHz

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13
Q

Name the frequency!

A

1.25kHz

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14
Q

Name the frequency!

A

1.6kHz

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15
Q

Name the frequency!

A

2kHz

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16
Q

Name the frequency!

A

2.5kHz

17
Q

Name the frequency!

A

3.2kHz

18
Q

Name the frequency!

A

4kHz

19
Q

Name the frequency!

A

5kHz

20
Q

Name the frequency!

A

6.3kHz

21
Q

Name the frequency!

A

8kHz

22
Q

Name the frequency!

A

10kHz

23
Q

Name the frequency!

(if you can hear it)

A

12.5kHz

Note: This might be entering the range that you’ll struggle to hear if you’ve sustained a lot of hearing damage over the course of your life. Also entering this uncomfortable-to-listen-to zone.

24
Q

Name the frequency!

(if you can hear it)

A

16kHz

Note: This is likely the range that you’ll struggle to hear if you’ve sustained much hearing damage you’ve sustained over the course of your life. Also likely uncomfortable to listen to.

25
Q

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Live Sound Engineer Training (17 decks)

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