Effects and Signal Processing

Equalization is a process used to adjust the balance of frequencies in an audio signal. This can be done to correct for imbalances in the original recording, to enhance certain frequencies for creative effect, or to compensate for the frequency response of the playback system.

A compressor reduces the dynamic range of a signal by reducing the difference between the loudest and softest parts of the signal. A limiter prevents the signal from exceeding a certain threshold, which can be useful for preventing distortion or clipping.

Reverb is a signal processing technique used to create a sense of space and depth in an audio mix. It simulates the natural reverberation that occurs when sound waves bounce off surfaces in a room.

A high-pass filter allows high frequencies to pass through while attenuating low frequencies. This can be used to remove unwanted low-frequency noise from a signal or to create a brighter sound. A low-pass filter allows low frequencies to pass through while attenuating high frequencies. This can be used to remove unwanted high-frequency noise from a signal or to create a warmer sound.

A delay effect is a signal processing technique used to create a sense of space and depth in an audio mix. It creates a copy of the original signal and delays it by a certain amount of time. This can be used to simulate the natural delay that occurs when sound waves travel through a space.

A mono signal contains one channel of audio information, which means that it can be played back on a single speaker. A stereo signal contains two channels of audio information, which means that it can be played back on two speakers, creating a sense of space and depth.

A noise gate is a signal processing technique used to remove unwanted noise from an audio signal. It works by setting a threshold level. When the signal level drops below the threshold, the noise gate closes and prevents the noise from passing through.

A parametric equalizer allows you to adjust the gain, frequency, and bandwidth of each band. This gives you more control over the sound of your signal. A graphic equalizer allows you to adjust the gain of each band, but you cannot adjust the frequency or bandwidth.

A compressor is a signal processing technique used to reduce the dynamic range of an audio signal. This means that it reduces the difference between the loudest and softest parts of the signal. This can be useful for making a signal more consistent in volume or for creating a more aggressive sound.

Distortion adds a harsh, edgy sound to a signal by clipping the peaks of the waveform. Overdrive adds a warm, saturated sound by pushing the signal into a non-linear region of the amplifier.

A limiter is a signal processing technique used to prevent the signal from exceeding a certain threshold. This can be useful for preventing distortion or clipping.

Flanging creates a swirling, metallic sound by delaying the signal and then mixing it back with the original signal. Chorus creates a lush, spacious sound by delaying the signal and then adding it back to the original signal with a slight pitch shift.

A pitch shifter is a signal processing technique used to change the pitch of an audio signal. This can be useful for correcting intonation problems, creating vocal harmonies, or creating special effects.

Tremolo modulates the amplitude of a signal, creating a pulsating effect. Vibrato modulates the pitch of a signal, creating a wavering effect.

A wah-wah pedal is a signal processing effect that creates a sweeping, resonant sound by varying the cutoff frequency of a bandpass filter.