Two-port and multiport models, which are used in electrical engineering, optics, and photonics, can be also be used to characterize acoustics elements as linear time-invariant models. This paper presents an overview of such acoustic elements in signal processing applications. For example, a cascade of two-port elements can be used to model an expansion chamber, exponential horn, or audio filter. Similarly, waveguides (with and without loss), terminations, and multiport junctions can be used to model state space filters and feedback delay networks. The ability to see a system as a network of waveguides and junctions can provide some insight that may not be evident in equations and code. Audio signal processing algorithms can be constructed using two-port and multiport building blocks. Both frequency domain and discrete time domain analyses are included along with notes for MATLAB implementations
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.