Time Domain Driver

 



Loudspeaker Driver — Frequency-Domain Analysis

Application ID: 1369

Time Domain Driver Download

Determine Your NMCI Domain. You must use the OWA uniform resource locator (URL) associated with your NMCI account domain. If you do not know your domain, see. Determine My NMCI Domain, KM005320S in the Support Article Library (SAL) section of the NMCI Enterprise Self Service (ESS) Portal.

In a Windows domain configured with defaults, the domain controller that holds the Primary Domain Controller Emulator (PDC Emulator) flexible single master operations (FSMO) role is considered the authoritative time source for the entire domain. One way or another, every single other computer in the entire domain gets its time from that single. Time domains are not simply related with FFT and IFFT Page 24 How Risetime Affects Noise in the Time Domain. Noise in the TD increases with faster risetimes. Normalization at 10pS can be achieved but it is extremely noisy. Normalization at @20pS (2046 pts) is a good balance between frequency domain accuracy and low TD noise. DomainMode: This parameter will specify the active directory domain functional level. In above I have used mode 7 which is windows server 2016. Windows Server 2019 doesn’t have separate domain functional level. DomainNetbiosName This defines the NetBIOS name for the forest root domain.

Time Domain Division

This example shows how to model a loudspeaker driver of the dynamic cone type, common for low and medium frequencies. The analysis is carried out in the frequency domain and thus represents the linear behavior of the driver. The model analysis includes the total electric impedance and the on-axis sound pressure level at a nominal driving voltage, as functions of the frequency. The spatial characteristics of the driver are depicted in a directivity plot.

The tutorial model is set up using a combination of the Magnetic Fields interface and the Acoustic-Structure Interaction multiphysics interface.

Time Domain Direction Finding

The first analysis solves only the electromagnetic part of the problem when the driver is at rest. From here, the driving force factor and the blocked voice coil impedance can be extracted and exported for further use.

The final analysis is of the full model, including the relevant multiphysics interactions like acoustic-structure interaction and the electromagnetic force acting on the voice coil.

Time Domain Difference Amplifier

The model requires the Acoustics Module and the AC/DC Module.

This model example illustrates applications of this type that would nominally be built using the following products:

Time domain driver jobs

however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:

  • COMSOL Multiphysics®and
  • AC/DC Moduleand

The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.