Figure 7 - uploaded by Maarten Van Walstijn
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Schematic of the Big Muff Pi tone stack with potentiometer marked by red line. C d is the input capacitance of the measurement equipment used.

Schematic of the Big Muff Pi tone stack with potentiometer marked by red line. C d is the input capacitance of the measurement equipment used.

Source publication
Conference Paper
Full-text available
Physical circuit models have an inherent ability to simulate the behaviour of user controls as exhibited by, for example, potentiometers. Working to accurately model the user interface of musical circuits, this work provides potentiometer 'laws' that fit to the underlying characteristics of linear and logarithmic potentiometers. A strategy of ident...

Context in source publication

Context 1
... fit laws to characteristics obtained from both linear and logarithmic potentiometers, sufficient information is available to validate results from the law identification strategy exclusively using input/output measurements, presented in this section. The case study chosen to demonstrate this strategy is the tone stack from the Big Muff Pi, informed from the description in [12], with the schematic shown in Figure 7. In simple terms, the potentiometer in the Big Muff Pi tone stack blends between a low pass formed between R1 and C2, and a high pass filter formed by C1 and R2. ...