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EQ Training - Find Frequency Notches in a Music Mix

Switch to : Notches (EQ cut)

Purpose

Our Discriminative Frequency Training Test used band-filtered noise to ensure a training independent from any musical content. The following test puts those frequencies back in their context, and uses a short music track instead of noise.

This custom track starts with an ultra-low frequency rumble layered with crystal clear chimes, followed by a conventional mix made from various "classic" pop instruments such as an electric bass, drums and other percussion instruments, electric piano, electric guitar and synthesizer strings, along with a male voiceover and female vocal line. The track covers the full audible spectrum and will be altered to remove a particular frequency band.

Training Files

31 Hz 63 Hz 125 Hz 250 Hz 500 Hz
1 kHz 2 kHz 4 kHz 8 kHz 16 kHz

The aim of this test is to familiarize the listener with the sound of the different frequency bands, not subtle frequency abnormalilties. To serve this purpose, the original recording has been abusively EQ'd using a massive 24dB (!) notch filter, centered around the target frequencies, spaced one octave apart.

Those who mastered our Discriminative Frequency Training Test will go straight to the blind test section. Others will listen to each file and associate the missing octave band with the value of its center frequency.

The Test

31 Hz 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz 16 kHz Original
Listen to [?] then vote — multiple guesses not allowed (your vote triggers a new draw)

To pass a blind test, you will need to perform 10 trials at least, obtain a high score and reach a high confidence level: 95% is standard to rate statistical significance. It means that your score outperforms random guesses by 95%. There is still a probability that you just got lucky though, 5%. To reduce such probability to 1%, keep testing until you reached a confidence level of 99%.

Once you have succeeded in getting a score of 100% without listening to the individual labeled files during the test, your training will be complete!

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Take up the challenge

  • Find the smallest difference in sound levels you can detect. 
    The Level Series:  6dB  3dB  1dB  0.5dB  0.2dB  0.1dB 

  • Find the highest frequency you can reliably hear.
    The Frequency Series:  10kHz 11k 12k 13k 14k 15k 16k 17k 18k 19k 20kHz

  • Find the smallest difference in pitch (frequency) you can hear. 
    The Pitch Series:  50c  20c  10c  5c  2c  1c 

  • Find the shortest timing difference you can reliably hear. NEW
    The Timing Series:  1ms  2ms  5ms  10ms  20ms  50ms  100ms 

  • Find the highest dynamic range offered by your listening environment. 
    The Dynamic Range Series:  36dB  42dB  48dB  54dB  60dB  66dB  72dB  78dB 

  • Do you have the absolute hearing ability? 
    The Perfect Pitch Blind Test:  C Scale  Chromatic 

  • Are your ears sensitive to Absolute Phase? 
    The Absolute Polarity Blind Test:  Here 

  • Can you hear a difference between 16-bit and 8-bit audio files? 
    The 16-bit v/s 8-bit Blind Test

For sound and studio engineers