DSP Term ProjectDSP Term Project

By: Ashley DownsAnd

Jeff Malen

By: Ashley DownsAnd

Jeff Malen

Sound EffectsSound Effects

Delay Multiple Echoes Natural Reverb Flanging

Delay Multiple Echoes Natural Reverb Flanging

DelayDelay

Delay takes an audio signal and plays it back after the delay time (several milliseconds to several seconds).

Delay takes an audio signal and plays it back after the delay time (several milliseconds to several seconds).

Sound Files for DelaySound Files for Delay

Input Sound

Output Sound

Input Sound

Output Sound

Multiple Echo FilterMultiple Echo Filter

H(z)= Z^-R . (1- alpha * (Z^-R))

H(z)= Z^-R . (1- alpha * (Z^-R))

Impulse Response of a Multi Echo FilterImpulse Response of a Multi Echo Filter

Sound Files for Multiple Echo FilterSound Files for Multiple Echo Filter

Input Sound

Output Sound

Input Sound

Output Sound

ReverberationReverberation

Reverberation is the result of many reflections of a sound that occur in a particular space.

Reverberation is the result of many reflections of a sound that occur in a particular space.

Natural ReverberatorNatural Reverberator

The Schroeder’s Reverberator Combination of 4 Comb and 2 All Pass.

The Schroeder’s Reverberator Combination of 4 Comb and 2 All Pass.

Sound Files for Natural Reverberator

Sound Files for Natural Reverberator

Input Sound

Output Sound

Input Sound

Output Sound

FlangingFlanging

H(z)= (1+ alpha*(Z^-beta(n))) H(z)= (1+ alpha*(Z^-beta(n)))

A Time Varying Delay FunctionA Time Varying Delay Function

Sound Files for Flange EffectSound Files for Flange Effect

Input Sound

Output Sound

Input Sound

Output Sound

That’s All Folks!That’s All Folks!