Emulating behavior of audio systems

A system comprising:

• a chassis, the chassis supporting:
• an output port that is electronically couplable to an input of a physical audio system to be modeled, the physical audio system comprising a physical audio control;
• an input port that is configured to receive an electrical audio signal from the physical audio system;
• a user interface having a user-adjustable control;
• electronic circuitry comprising:
• a test audio signal generator operable to generate a test audio signal;
• a processor coupled to memory, the processor operable to communicate with the output port, the input port, and the user interface;
• wherein the processor controls the electronic circuitry to train a digital model that models the physical audio system at multiple different settings of the physical audio control by repeatedly performing a training process until a stop condition is satisfied, each repeated performing through the training process being carried out at a new one of the multiple different settings of the physical audio control to:
• control the test audio signal generator to output the test audio signal to the output port, whereupon the test audio signal is coupled to the input of the physical audio system;
• receive via the input port, a physical audio system output signal, which is generated responsive to the physical audio system processing the test audio signal;
• and
• compute parameters of the digital model from:
• the test audio signal;
• a received identification of the new one of the multiple different settings of the physical audio control;
• and
• the received physical audio system output signal, wherein the processor is further programmed to build the digital model from the computed parameters and store the digital model in the memory.

A system comprising:

• a chassis, the chassis supporting:
• electronic circuitry comprising:
• a test audio signal generator operable to generate a test audio signal;
• and
• a processor coupled to memory;
• an audio output port that is electronically couplable to an input of a physical audio system to be modeled, the physical audio system comprising physical audio controls, the physical audio controls comprising physical audio control settings, the physical audio system for generating an audio system signal in response to the test audio signal, the audio system signal being a function of the test audio signal and the physical audio control settings;
• a user interface communicably coupled to the processor, the user interface comprising virtual audio controls, each virtual audio control having virtual audio control settings;
• a return port for capturing the audio system signal;
• and
• a switch operatively controlled by the processor, the switch comprising a capture input setting to select the test audio signal and couple the test audio signal to the audio output port;
• wherein the processor implements a capture mode responsive to the capture input setting, the capture mode for executing an iterative process until a threshold condition is met, each iteration through the iterative process being carried out at a new one of the physical audio control settings to:
• receive the test audio signal;
• and
• determine parameters of a digital model from:
• the test audio signal;
• the new one of the physical audio control settings;
• and
• the audio system signal at the new one of the physical audio control settings;
• and
• associate new virtual audio control settings to the new physical audio control settings;
• wherein the processor builds or modifies a digital model from the determined parameters that are stored in the memory, the digital model modeling the physical audio system at multiple different physical audio control settings;
• and
• wherein, the processor controls an output of the digital model to emulate a corresponding output of the physical audio system at physical audio control settings corresponding to user-adjusted virtual audio control settings.