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Notes
- Equalizer: A tool that boosts or cuts the amplitude of specific frequencies
- High Shelf: When higher frequency has higher amplitude
- Known as First Order Filter, common type of equalizer
- Low Shelf: Lower frequency has lower amplitude
- Pass filter: eliminates all sounds at a certain frequency
- High pass: all high frequencies pass
- Low pass: all low frequencies pass
- Second Order Filter (Peaking Filter, Parametric EQ)
- 3 settings:
- Frequency
- Gain
- Q or Quality Factor
- Notch Cut/Band Stop filter: cuts all sound out from a very small range of frequency
- 3 Uses of equalizers:
- Fix inadequacies in the recording
- EQ for mixing audio
- Make it sound better/different
- 160 Hz – add power
- 5,000 Hz – prescence
- 4,000 – 10,000 Hz – sibilance
- Dynamic Range: difference between very soft and very loud
- Compressor: compresses space of range between very soft and very loud
- Once dynamic range is compresses, the volume can be boosted or cut
- Compressors help smooth out spikes in the volume
- Makes the audio sound more powerful and louder than normal
- Expander: opposite of compressor
- Fast Fourier Transform (FFT): A complex algorithm that can be used to precisely manipulate frequencies
- Too much FFT results in “chirping”
- Can be used to take away any sound
- Delay Filter: repeats audio by 15 ms or less you get an effect called audio combing
- Generally avoided in the recording studio, but can be used as an effect
- Used to create bizarre characters
- Reverb: Sum of lots of varied echoes
- Gives audio sense of space