The loudspeaker rotary effect can be simulated by using a combination of modulation and delay line modulation, as shown in Fig3-1[1]. The modulated delay line and amplitude modulation simulates the pitch modifications effects and intensity modifications effect respectively. Read more »
The stereo delay effects can be accomplished by the block diagram Fig2-1. Two basic circular delay line are used in the left and right channels and are coupled by introducing cross-feedback coefficients dL and dR[1]. Read more »
The reverberator shown in Fig 1-1 is built by cascading allpass filters(AP1-AP4) and lowpass filters(LP1-LP4). The strategy is shorter reverberation times in early allpass loops and longer reverberation times in later ones. Also, the cutoff frequency for each successive lowpass filter is gradually lower, simulating the increasing loss of high frequency energy[1]. Read more »