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
Name the frequency!
80Hz
Name the frequency!
100Hz
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125Hz
Name the frequency!
160Hz
Name the frequency!
200Hz
Name the frequency!
250Hz
Name the frequency!
320Hz
Name the frequency!
400Hz
Name the frequency!
500Hz
Name the frequency!
630Hz
Name the frequency!
800Hz
Name the frequency!
1kHz
Name the frequency!
1.25kHz
Name the frequency!
1.6kHz
Name the frequency!
2kHz
Name the frequency!
2.5kHz
Name the frequency!
3.2kHz
Name the frequency!
4kHz
Name the frequency!
5kHz
Name the frequency!
6.3kHz
Name the frequency!
8kHz
Name the frequency!
10kHz
Name the frequency!
(if you can hear it)
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.
Name the frequency!
(if you can hear it)
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.
