Upload an audio file and apply different filters to the track.
Original
Lowpass
Highpass
Bandpass
Lowshelf
Highshelf
Allpass
Lowpass Filter
Standard second-order resonant lowpass filter with 12dB/octave rolloff. Frequencies below the cutoff pass through; frequencies above it are attenuated. Cutoff frequency is set at 80 Hz for this lesson
Highpass Filter
Standard second-order resonant highpass filter with 12dB/octave rolloff. Frequencies below the cutoff are attenuated; frequencies above it pass through. Cutoff frequency is set at 1000 Hz for this lesson
Bandpass Filter
Standard second-order bandpass filter. Frequencies outside the given range of frequencies are attenuated; the frequencies inside it pass through. The center of the frequency range is set at 500 Hz for this lesson. The Q value determines the width of the band (lower Q-value means wider). The Q-value is set at 2 for this lesson.
Lowshelf Filter
Standard second-order lowshelf filer. Frequencies lower than the frequency get a boost, or an attenuation; frequencies over it are unchanged. Shelf Frequency is set at 80 Hz for this lesson, below which the frequencies are boosted by 10 dB
Highshelf Filter
Standard second-order highshelf filer. Frequencies higher than the frequency get a boost or an attenuation; frequencies lower than it are unchanged. Cutoff frequency is set at 1000 Hz for this lesson, above which the frequencies are boosted by 10 dB
Allpass Filter
Standard second-order allpass filter. It lets all frequencies through, but changes the phase-relationship between the various frequencies. The frequency where the center of the phase transition occurs is set at 500 Hz. The Q-value, which controls how sharp the transition is at the medium frequency, is set to 2 for this lesson (The larger this parameter is, the sharper and larger the transition will be.)